ID CVE-2016-2114
Summary The SMB1 protocol implementation in Samba 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 does not recognize the "server signing = mandatory" setting, which allows man-in-the-middle attackers to spoof SMB servers by modifying the client-server data stream.
References
Vulnerable Configurations
  • Samba 4.4.0
    cpe:2.3:a:samba:samba:4.4.0
  • Samba 4.3.6
    cpe:2.3:a:samba:samba:4.3.6
  • Samba 4.3.5
    cpe:2.3:a:samba:samba:4.3.5
  • Samba 4.3.4
    cpe:2.3:a:samba:samba:4.3.4
  • Samba 4.3.3
    cpe:2.3:a:samba:samba:4.3.3
  • Samba 4.3.2
    cpe:2.3:a:samba:samba:4.3.2
  • Samba 4.3.1
    cpe:2.3:a:samba:samba:4.3.1
  • Samba 4.3.0
    cpe:2.3:a:samba:samba:4.3.0
  • Samba 4.0.26
    cpe:2.3:a:samba:samba:4.0.26
  • Samba 4.0.25
    cpe:2.3:a:samba:samba:4.0.25
  • Samba 4.1.23
    cpe:2.3:a:samba:samba:4.1.23
  • Samba 4.2.9
    cpe:2.3:a:samba:samba:4.2.9
  • Samba 4.2.8
    cpe:2.3:a:samba:samba:4.2.8
  • Samba 4.2.7
    cpe:2.3:a:samba:samba:4.2.7
  • Samba 4.2.6
    cpe:2.3:a:samba:samba:4.2.6
  • Samba 4.2.5
    cpe:2.3:a:samba:samba:4.2.5
  • Samba 4.2.4
    cpe:2.3:a:samba:samba:4.2.4
  • Samba 4.2.3
    cpe:2.3:a:samba:samba:4.2.3
  • Samba 4.2.2
    cpe:2.3:a:samba:samba:4.2.2
  • Samba 4.2.1
    cpe:2.3:a:samba:samba:4.2.1
  • Samba 4.2.0 release candidate 4
    cpe:2.3:a:samba:samba:4.2.0:rc4
  • Samba 4.2.0 release candidate 3
    cpe:2.3:a:samba:samba:4.2.0:rc3
  • Samba 4.2.0 release candidate 2
    cpe:2.3:a:samba:samba:4.2.0:rc2
  • Samba 4.2.0 release candidate 1
    cpe:2.3:a:samba:samba:4.2.0:rc1
  • Samba 4.1.9
    cpe:2.3:a:samba:samba:4.1.9
  • Samba 4.1.8
    cpe:2.3:a:samba:samba:4.1.8
  • Samba 4.1.7
    cpe:2.3:a:samba:samba:4.1.7
  • Samba 4.1.6
    cpe:2.3:a:samba:samba:4.1.6
  • Samba 4.1.5
    cpe:2.3:a:samba:samba:4.1.5
  • Samba 4.1.4
    cpe:2.3:a:samba:samba:4.1.4
  • Samba 4.1.3
    cpe:2.3:a:samba:samba:4.1.3
  • Samba 4.1.22
    cpe:2.3:a:samba:samba:4.1.22
  • Samba 4.1.21
    cpe:2.3:a:samba:samba:4.1.21
  • Samba 4.1.20
    cpe:2.3:a:samba:samba:4.1.20
  • Samba 4.1.2
    cpe:2.3:a:samba:samba:4.1.2
  • Samba 4.1.19
    cpe:2.3:a:samba:samba:4.1.19
  • Samba 4.1.18
    cpe:2.3:a:samba:samba:4.1.18
  • Samba 4.1.17
    cpe:2.3:a:samba:samba:4.1.17
  • Samba 4.1.16
    cpe:2.3:a:samba:samba:4.1.16
  • Samba 4.1.15
    cpe:2.3:a:samba:samba:4.1.15
  • Samba 4.1.14
    cpe:2.3:a:samba:samba:4.1.14
  • Samba 4.1.13
    cpe:2.3:a:samba:samba:4.1.13
  • Samba 4.1.12
    cpe:2.3:a:samba:samba:4.1.12
  • Samba 4.1.11
    cpe:2.3:a:samba:samba:4.1.11
  • Samba 4.1.10
    cpe:2.3:a:samba:samba:4.1.10
  • Samba 4.1.1
    cpe:2.3:a:samba:samba:4.1.1
  • Samba 4.1.0
    cpe:2.3:a:samba:samba:4.1.0
  • Samba 4.0.9
    cpe:2.3:a:samba:samba:4.0.9
  • Samba 4.0.8
    cpe:2.3:a:samba:samba:4.0.8
  • Samba 4.0.7
    cpe:2.3:a:samba:samba:4.0.7
  • Samba 4.0.6
    cpe:2.3:a:samba:samba:4.0.6
  • Samba 4.0.5
    cpe:2.3:a:samba:samba:4.0.5
  • Samba 4.0.4
    cpe:2.3:a:samba:samba:4.0.4
  • Samba 4.0.3
    cpe:2.3:a:samba:samba:4.0.3
  • Samba 4.0.24
    cpe:2.3:a:samba:samba:4.0.24
  • Samba 4.0.23
    cpe:2.3:a:samba:samba:4.0.23
  • Samba 4.0.22
    cpe:2.3:a:samba:samba:4.0.22
  • Samba 4.0.21
    cpe:2.3:a:samba:samba:4.0.21
  • Samba 4.0.20
    cpe:2.3:a:samba:samba:4.0.20
  • Samba 4.0.2
    cpe:2.3:a:samba:samba:4.0.2
  • Samba 4.0.19
    cpe:2.3:a:samba:samba:4.0.19
  • Samba 4.0.18
    cpe:2.3:a:samba:samba:4.0.18
  • Samba 4.0.17
    cpe:2.3:a:samba:samba:4.0.17
  • Samba 4.0.16
    cpe:2.3:a:samba:samba:4.0.16
  • Samba 4.0.15
    cpe:2.3:a:samba:samba:4.0.15
  • Samba 4.0.14
    cpe:2.3:a:samba:samba:4.0.14
  • Samba 4.0.13
    cpe:2.3:a:samba:samba:4.0.13
  • Samba 4.0.12
    cpe:2.3:a:samba:samba:4.0.12
  • Samba 4.0.11
    cpe:2.3:a:samba:samba:4.0.11
  • Samba 4.0.10
    cpe:2.3:a:samba:samba:4.0.10
  • Samba 4.0.1
    cpe:2.3:a:samba:samba:4.0.1
  • Samba 4.0.0
    cpe:2.3:a:samba:samba:4.0.0
  • Canonical Ubuntu Linux 15.10
    cpe:2.3:o:canonical:ubuntu_linux:15.10
  • Canonical Ubuntu Linux 16.04 LTS (Long-Term Support)
    cpe:2.3:o:canonical:ubuntu_linux:16.04:-:-:-:lts
  • Canonical Ubuntu Linux 14.04 LTS (Long-Term Support)
    cpe:2.3:o:canonical:ubuntu_linux:14.04:-:-:-:lts
CVSS
Base: 4.3 (as of 03-06-2016 - 16:55)
Impact:
Exploitability:
CWE CWE-254
CAPEC
Access
VectorComplexityAuthentication
NETWORK MEDIUM NONE
Impact
ConfidentialityIntegrityAvailability
NONE PARTIAL NONE
nessus via4
  • NASL family Gentoo Local Security Checks
    NASL id GENTOO_GLSA-201612-47.NASL
    description The remote host is affected by the vulnerability described in GLSA-201612-47 (Samba: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in samba. Please review the CVE identifiers referenced below for details. Impact : A remote attacker could possibly execute arbitrary code with root privileges, cause a Denial of Service condition, conduct a man-in-the-middle attack, obtain sensitive information, or bypass file permissions. Workaround : There is no known workaround at this time.
    last seen 2019-02-21
    modified 2016-12-27
    plugin id 96127
    published 2016-12-27
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=96127
    title GLSA-201612-47 : Samba: Multiple vulnerabilities (Badlock)
  • NASL family FreeBSD Local Security Checks
    NASL id FREEBSD_PKG_A636FC2600D911E6B704000C292E4FD8.NASL
    description Samba team reports : [CVE-2015-5370] Errors in Samba DCE-RPC code can lead to denial of service (crashes and high cpu consumption) and man in the middle attacks. [CVE-2016-2110] The feature negotiation of NTLMSSP is not downgrade protected. A man in the middle is able to clear even required flags, especially NTLMSSP_NEGOTIATE_SIGN and NTLMSSP_NEGOTIATE_SEAL. [CVE-2016-2111] When Samba is configured as Domain Controller it allows remote attackers to spoof the computer name of a secure channel's endpoints, and obtain sensitive session information, by running a crafted application and leveraging the ability to sniff network traffic. [CVE-2016-2112] A man in the middle is able to downgrade LDAP connections to no integrity protection. [CVE-2016-2113] Man in the middle attacks are possible for client triggered LDAP connections (with ldaps://) and ncacn_http connections (with https://). [CVE-2016-2114] Due to a bug Samba doesn't enforce required smb signing, even if explicitly configured. [CVE-2016-2115] The protection of DCERPC communication over ncacn_np (which is the default for most the file server related protocols) is inherited from the underlying SMB connection. [CVE-2016-2118] a.k.a. BADLOCK. A man in the middle can intercept any DCERPC traffic between a client and a server in order to impersonate the client and get the same privileges as the authenticated user account. This is most problematic against active directory domain controllers.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 90474
    published 2016-04-13
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90474
    title FreeBSD : samba -- multiple vulnerabilities (a636fc26-00d9-11e6-b704-000c292e4fd8) (Badlock)
  • NASL family Ubuntu Local Security Checks
    NASL id UBUNTU_USN-2950-3.NASL
    description USN-2950-1 fixed vulnerabilities in Samba. The fixes introduced in Samba 4.3.8 caused certain regressions and interoperability issues. This update resolves some of these issues by updating to Samba 4.3.9 in Ubuntu 14.04 LTS, Ubuntu 15.10 and Ubuntu 16.04 LTS. Backported regression fixes were added to Samba 3.6.25 in Ubuntu 12.04 LTS. This advisory was inadvertently published as USN-2950-2 originally. Jouni Knuutinen discovered that Samba contained multiple flaws in the DCE/RPC implementation. A remote attacker could use this issue to perform a denial of service, downgrade secure connections by performing a man in the middle attack, or possibly execute arbitrary code. (CVE-2015-5370) Stefan Metzmacher discovered that Samba contained multiple flaws in the NTLMSSP authentication implementation. A remote attacker could use this issue to downgrade connections to plain text by performing a man in the middle attack. (CVE-2016-2110) Alberto Solino discovered that a Samba domain controller would establish a secure connection to a server with a spoofed computer name. A remote attacker could use this issue to obtain sensitive information. (CVE-2016-2111) Stefan Metzmacher discovered that the Samba LDAP implementation did not enforce integrity protection. A remote attacker could use this issue to hijack LDAP connections by performing a man in the middle attack. (CVE-2016-2112) Stefan Metzmacher discovered that Samba did not validate TLS certificates. A remote attacker could use this issue to spoof a Samba server. (CVE-2016-2113) Stefan Metzmacher discovered that Samba did not enforce SMB signing even if configured to. A remote attacker could use this issue to perform a man in the middle attack. (CVE-2016-2114) Stefan Metzmacher discovered that Samba did not enable integrity protection for IPC traffic. A remote attacker could use this issue to perform a man in the middle attack. (CVE-2016-2115) Stefan Metzmacher discovered that Samba incorrectly handled the MS-SAMR and MS-LSAD protocols. A remote attacker could use this flaw with a man in the middle attack to impersonate users and obtain sensitive information from the Security Account Manager database. This flaw is known as Badlock. (CVE-2016-2118) Samba has been updated to 4.3.8 in Ubuntu 14.04 LTS and Ubuntu 15.10. Ubuntu 12.04 LTS has been updated to 3.6.25 with backported security fixes. In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes. Configuration changes may be required in certain environments. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-12-01
    plugin id 90915
    published 2016-05-05
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90915
    title Ubuntu 12.04 LTS / 14.04 LTS / 15.10 / 16.04 LTS : samba regressions (USN-2950-3) (Badlock)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2016-0614.NASL
    description An update for samba is now available for Red Hat Gluster Storage 3.1 for RHEL 6 and Red Hat Gluster Storage 3.1 for RHEL 7. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Samba is an open source implementation of the Server Message Block (SMB) protocol and the related Common Internet File System (CIFS) protocol, which allow PC-compatible machines to share files, printers, and various information. The following packages have been upgraded to a newer upstream version: Samba (4.2.10). Refer to the Release Notes listed in the References section for a complete list of changes. Security Fix(es) : * Multiple flaws were found in Samba's DCE/RPC protocol implementation. A remote, authenticated attacker could use these flaws to cause a denial of service against the Samba server (high CPU load or a crash) or, possibly, execute arbitrary code with the permissions of the user running Samba (root). This flaw could also be used to downgrade a secure DCE/RPC connection by a man-in-the-middle attacker taking control of an Active Directory (AD) object and compromising the security of a Samba Active Directory Domain Controller (DC). (CVE-2015-5370) Note: While Samba packages as shipped in Red Hat Gluster Storage do not support running Samba as an AD DC, this flaw applies to all roles Samba implements. * A protocol flaw, publicly referred to as Badlock, was found in the Security Account Manager Remote Protocol (MS-SAMR) and the Local Security Authority (Domain Policy) Remote Protocol (MS-LSAD). Any authenticated DCE/RPC connection that a client initiates against a server could be used by a man-in-the-middle attacker to impersonate the authenticated user against the SAMR or LSA service on the server. As a result, the attacker would be able to get read/write access to the Security Account Manager database, and use this to reveal all passwords or any other potentially sensitive information in that database. (CVE-2016-2118) * Several flaws were found in Samba's implementation of NTLMSSP authentication. An unauthenticated, man-in-the-middle attacker could use this flaw to clear the encryption and integrity flags of a connection, causing data to be transmitted in plain text. The attacker could also force the client or server into sending data in plain text even if encryption was explicitly requested for that connection. (CVE-2016-2110) * It was discovered that Samba configured as a Domain Controller would establish a secure communication channel with a machine using a spoofed computer name. A remote attacker able to observe network traffic could use this flaw to obtain session-related information about the spoofed machine. (CVE-2016-2111) * It was found that Samba's LDAP implementation did not enforce integrity protection for LDAP connections. A man-in-the-middle attacker could use this flaw to downgrade LDAP connections to use no integrity protection, allowing them to hijack such connections. (CVE-2016-2112) * It was found that Samba did not validate SSL/TLS certificates in certain connections. A man-in-the-middle attacker could use this flaw to spoof a Samba server using a specially crafted SSL/TLS certificate. (CVE-2016-2113) * It was discovered that Samba did not enforce Server Message Block (SMB) signing for clients using the SMB1 protocol. A man-in-the-middle attacker could use this flaw to modify traffic between a client and a server. (CVE-2016-2114) * It was found that Samba did not enable integrity protection for IPC traffic by default. A man-in-the-middle attacker could use this flaw to view and modify the data sent between a Samba server and a client. (CVE-2016-2115) Red Hat would like to thank the Samba project for reporting these issues. Upstream acknowledges Jouni Knuutinen (Synopsis) as the original reporter of CVE-2015-5370; and Stefan Metzmacher (SerNet) as the original reporter of CVE-2016-2118, CVE-2016-2110, CVE-2016-2112, CVE-2016-2113, CVE-2016-2114, and CVE-2016-2115.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 90530
    published 2016-04-15
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90530
    title RHEL 6 / 7 : Storage Server (RHSA-2016:0614) (Badlock)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2016-383FCE04E2.NASL
    description Security fix for CVE-2015-5370, CVE-2016-2110, CVE-2016-2111, CVE-2016-2112, CVE-2016-2113, CVE-2016-2114, CVE-2016-2115, CVE-2016-2118 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2016-12-05
    plugin id 90646
    published 2016-04-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90646
    title Fedora 24 : samba-4.4.2-1.fc24 (2016-383fce04e2) (Badlock)
  • NASL family Huawei Local Security Checks
    NASL id EULEROS_SA-2016-1014.NASL
    description According to the versions of the samba packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - Multiple flaws were found in Samba's DCE/RPC protocol implementation. A remote, authenticated attacker could use these flaws to cause a denial of service against the Samba server (high CPU load or a crash) or, possibly, execute arbitrary code with the permissions of the user running Samba (root). This flaw could also be used to downgrade a secure DCE/RPC connection by a man-in-the-middle attacker taking control of an Active Directory (AD) object and compromising the security of a Samba Active Directory Domain Controller (DC).(CVE-2015-5370) - A protocol flaw, publicly referred to as Badlock, was found in the Security Account Manager Remote Protocol (MS-SAMR) and the Local Security Authority (Domain Policy) Remote Protocol (MS-LSAD). Any authenticated DCE/RPC connection that a client initiates against a server could be used by a man-in-the-middle attacker to impersonate the authenticated user against the SAMR or LSA service on the server. - As a result, the attacker would be able to get read/write access to the Security Account Manager database, and use this to reveal all passwords or any other potentially sensitive information in that database. (CVE-2016-2118) - Several flaws were found in Samba's implementation of NTLMSSP authentication. An nauthenticated, man-in-the-middle attacker could use this flaw to clear the encryption and integrity flags of a connection, causing data to be transmitted in plain text. The attacker could also force the client or server into sending data in plain text even if encryption was explicitly requested for that connection.(CVE-2016-2110) - It was discovered that Samba configured as a Domain Controller would establish a secure communication channel with a machine using a spoofed computer name. A remote attacker able to observe network traffic could use this flaw to obtain session-related information about the spoofed machine. (CVE-2016-2111) - It was found that Samba's LDAP implementation did not enforce integrity protection for LDAP connections. A man-in-the-middle attacker could use this flaw to downgrade LDAP connections to use no integrity protection, allowing them to hijack such connections.(CVE-2016-2112) - It was found that Samba did not validate SSL/TLS certificates in certain connections. A man-in-the-middle attacker could use this flaw to spoof a Samba server using a specially crafted SSL/TLS certificate.(CVE-2016-2113) - It was discovered that Samba did not enforce Server Message Block (SMB) signing for clients using the SMB1 protocol. A man-in-the-middle attacker could use this flaw to modify traffic between a client and a server. (CVE-2016-2114) - It was found that Samba did not enable integrity protection for IPC traffic by default. A man-in-the-middle attacker could use this flaw to view and modify the data sent between a Samba server and a client.(CVE-2016-2115) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-11-14
    plugin id 99777
    published 2017-05-01
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=99777
    title EulerOS 2.0 SP1 : samba (EulerOS-SA-2016-1014)
  • NASL family Ubuntu Local Security Checks
    NASL id UBUNTU_USN-2950-2.NASL
    description USN-2950-1 fixed vulnerabilities in Samba. The updated Samba packages introduced a compatibility issue with NTLM authentication in libsoup. This update fixes the problem. We apologize for the inconvenience. Jouni Knuutinen discovered that Samba contained multiple flaws in the DCE/RPC implementation. A remote attacker could use this issue to perform a denial of service, downgrade secure connections by performing a man in the middle attack, or possibly execute arbitrary code. (CVE-2015-5370) Stefan Metzmacher discovered that Samba contained multiple flaws in the NTLMSSP authentication implementation. A remote attacker could use this issue to downgrade connections to plain text by performing a man in the middle attack. (CVE-2016-2110) Alberto Solino discovered that a Samba domain controller would establish a secure connection to a server with a spoofed computer name. A remote attacker could use this issue to obtain sensitive information. (CVE-2016-2111) Stefan Metzmacher discovered that the Samba LDAP implementation did not enforce integrity protection. A remote attacker could use this issue to hijack LDAP connections by performing a man in the middle attack. (CVE-2016-2112) Stefan Metzmacher discovered that Samba did not validate TLS certificates. A remote attacker could use this issue to spoof a Samba server. (CVE-2016-2113) Stefan Metzmacher discovered that Samba did not enforce SMB signing even if configured to. A remote attacker could use this issue to perform a man in the middle attack. (CVE-2016-2114) Stefan Metzmacher discovered that Samba did not enable integrity protection for IPC traffic. A remote attacker could use this issue to perform a man in the middle attack. (CVE-2016-2115) Stefan Metzmacher discovered that Samba incorrectly handled the MS-SAMR and MS-LSAD protocols. A remote attacker could use this flaw with a man in the middle attack to impersonate users and obtain sensitive information from the Security Account Manager database. This flaw is known as Badlock. (CVE-2016-2118) Samba has been updated to 4.3.8 in Ubuntu 14.04 LTS and Ubuntu 15.10. Ubuntu 12.04 LTS has been updated to 3.6.25 with backported security fixes. In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes. Configuration changes may be required in certain environments. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-12-01
    plugin id 90824
    published 2016-05-02
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90824
    title Ubuntu 14.04 LTS / 15.10 / 16.04 LTS : libsoup2.4 update (USN-2950-2) (Badlock)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2016-0612.NASL
    description From Red Hat Security Advisory 2016:0612 : An update for samba4 and samba is now available for Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7, respectively. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Samba is an open source implementation of the Server Message Block (SMB) protocol and the related Common Internet File System (CIFS) protocol, which allow PC-compatible machines to share files, printers, and various information. The following packages have been upgraded to a newer upstream version: Samba (4.2.10). Refer to the Release Notes listed in the References section for a complete list of changes. Security Fix(es) : * Multiple flaws were found in Samba's DCE/RPC protocol implementation. A remote, authenticated attacker could use these flaws to cause a denial of service against the Samba server (high CPU load or a crash) or, possibly, execute arbitrary code with the permissions of the user running Samba (root). This flaw could also be used to downgrade a secure DCE/RPC connection by a man-in-the-middle attacker taking control of an Active Directory (AD) object and compromising the security of a Samba Active Directory Domain Controller (DC). (CVE-2015-5370) Note: While Samba packages as shipped in Red Hat Enterprise Linux do not support running Samba as an AD DC, this flaw applies to all roles Samba implements. * A protocol flaw, publicly referred to as Badlock, was found in the Security Account Manager Remote Protocol (MS-SAMR) and the Local Security Authority (Domain Policy) Remote Protocol (MS-LSAD). Any authenticated DCE/RPC connection that a client initiates against a server could be used by a man-in-the-middle attacker to impersonate the authenticated user against the SAMR or LSA service on the server. As a result, the attacker would be able to get read/write access to the Security Account Manager database, and use this to reveal all passwords or any other potentially sensitive information in that database. (CVE-2016-2118) * Several flaws were found in Samba's implementation of NTLMSSP authentication. An unauthenticated, man-in-the-middle attacker could use this flaw to clear the encryption and integrity flags of a connection, causing data to be transmitted in plain text. The attacker could also force the client or server into sending data in plain text even if encryption was explicitly requested for that connection. (CVE-2016-2110) * It was discovered that Samba configured as a Domain Controller would establish a secure communication channel with a machine using a spoofed computer name. A remote attacker able to observe network traffic could use this flaw to obtain session-related information about the spoofed machine. (CVE-2016-2111) * It was found that Samba's LDAP implementation did not enforce integrity protection for LDAP connections. A man-in-the-middle attacker could use this flaw to downgrade LDAP connections to use no integrity protection, allowing them to hijack such connections. (CVE-2016-2112) * It was found that Samba did not validate SSL/TLS certificates in certain connections. A man-in-the-middle attacker could use this flaw to spoof a Samba server using a specially crafted SSL/TLS certificate. (CVE-2016-2113) * It was discovered that Samba did not enforce Server Message Block (SMB) signing for clients using the SMB1 protocol. A man-in-the-middle attacker could use this flaw to modify traffic between a client and a server. (CVE-2016-2114) * It was found that Samba did not enable integrity protection for IPC traffic by default. A man-in-the-middle attacker could use this flaw to view and modify the data sent between a Samba server and a client. (CVE-2016-2115) Red Hat would like to thank the Samba project for reporting these issues. Upstream acknowledges Jouni Knuutinen (Synopsis) as the original reporter of CVE-2015-5370; and Stefan Metzmacher (SerNet) as the original reporter of CVE-2016-2118, CVE-2016-2110, CVE-2016-2112, CVE-2016-2113, CVE-2016-2114, and CVE-2016-2115.
    last seen 2019-02-21
    modified 2018-07-24
    plugin id 90487
    published 2016-04-13
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90487
    title Oracle Linux 6 / 7 : samba / samba4 (ELSA-2016-0612) (Badlock)
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20160412_SAMBA_AND_SAMBA4_ON_SL6_X.NASL
    description Security Fix(es) : - Multiple flaws were found in Samba's DCE/RPC protocol implementation. A remote, authenticated attacker could use these flaws to cause a denial of service against the Samba server (high CPU load or a crash) or, possibly, execute arbitrary code with the permissions of the user running Samba (root). This flaw could also be used to downgrade a secure DCE/RPC connection by a man-in-the-middle attacker taking control of an Active Directory (AD) object and compromising the security of a Samba Active Directory Domain Controller (DC). (CVE-2015-5370) Note: While Samba packages as shipped in Scientific Linux do not support running Samba as an AD DC, this flaw applies to all roles Samba implements. - A protocol flaw, publicly referred to as Badlock, was found in the Security Account Manager Remote Protocol (MS-SAMR) and the Local Security Authority (Domain Policy) Remote Protocol (MS-LSAD). Any authenticated DCE/RPC connection that a client initiates against a server could be used by a man-in-the-middle attacker to impersonate the authenticated user against the SAMR or LSA service on the server. As a result, the attacker would be able to get read/write access to the Security Account Manager database, and use this to reveal all passwords or any other potentially sensitive information in that database. (CVE-2016-2118) - Several flaws were found in Samba's implementation of NTLMSSP authentication. An unauthenticated, man-in-the-middle attacker could use this flaw to clear the encryption and integrity flags of a connection, causing data to be transmitted in plain text. The attacker could also force the client or server into sending data in plain text even if encryption was explicitly requested for that connection. (CVE-2016-2110) - It was discovered that Samba configured as a Domain Controller would establish a secure communication channel with a machine using a spoofed computer name. A remote attacker able to observe network traffic could use this flaw to obtain session-related information about the spoofed machine. (CVE-2016-2111) - It was found that Samba's LDAP implementation did not enforce integrity protection for LDAP connections. A man-in-the-middle attacker could use this flaw to downgrade LDAP connections to use no integrity protection, allowing them to hijack such connections. (CVE-2016-2112) - It was found that Samba did not validate SSL/TLS certificates in certain connections. A man-in-the-middle attacker could use this flaw to spoof a Samba server using a specially crafted SSL/TLS certificate. (CVE-2016-2113) - It was discovered that Samba did not enforce Server Message Block (SMB) signing for clients using the SMB1 protocol. A man-in-the-middle attacker could use this flaw to modify traffic between a client and a server. (CVE-2016-2114) - It was found that Samba did not enable integrity protection for IPC traffic by default. A man-in-the-middle attacker could use this flaw to view and modify the data sent between a Samba server and a client. (CVE-2016-2115)
    last seen 2019-02-21
    modified 2018-12-28
    plugin id 90502
    published 2016-04-13
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90502
    title Scientific Linux Security Update : samba and samba4 on SL6.x, SL7.x i386/x86_64 (Badlock)
  • NASL family Ubuntu Local Security Checks
    NASL id UBUNTU_USN-2950-5.NASL
    description USN-2950-1 fixed vulnerabilities in Samba. USN-2950-3 updated Samba to version 4.3.9, which introduced a regression when using the ntlm_auth tool. This update fixes the problem. Jouni Knuutinen discovered that Samba contained multiple flaws in the DCE/RPC implementation. A remote attacker could use this issue to perform a denial of service, downgrade secure connections by performing a man in the middle attack, or possibly execute arbitrary code. (CVE-2015-5370) Stefan Metzmacher discovered that Samba contained multiple flaws in the NTLMSSP authentication implementation. A remote attacker could use this issue to downgrade connections to plain text by performing a man in the middle attack. (CVE-2016-2110) Alberto Solino discovered that a Samba domain controller would establish a secure connection to a server with a spoofed computer name. A remote attacker could use this issue to obtain sensitive information. (CVE-2016-2111) Stefan Metzmacher discovered that the Samba LDAP implementation did not enforce integrity protection. A remote attacker could use this issue to hijack LDAP connections by performing a man in the middle attack. (CVE-2016-2112) Stefan Metzmacher discovered that Samba did not validate TLS certificates. A remote attacker could use this issue to spoof a Samba server. (CVE-2016-2113) Stefan Metzmacher discovered that Samba did not enforce SMB signing even if configured to. A remote attacker could use this issue to perform a man in the middle attack. (CVE-2016-2114) Stefan Metzmacher discovered that Samba did not enable integrity protection for IPC traffic. A remote attacker could use this issue to perform a man in the middle attack. (CVE-2016-2115) Stefan Metzmacher discovered that Samba incorrectly handled the MS-SAMR and MS-LSAD protocols. A remote attacker could use this flaw with a man in the middle attack to impersonate users and obtain sensitive information from the Security Account Manager database. This flaw is known as Badlock. (CVE-2016-2118) Samba has been updated to 4.3.8 in Ubuntu 14.04 LTS and Ubuntu 15.10. Ubuntu 12.04 LTS has been updated to 3.6.25 with backported security fixes. In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes. Configuration changes may be required in certain environments. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-12-01
    plugin id 91333
    published 2016-05-26
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=91333
    title Ubuntu 14.04 LTS / 15.10 / 16.04 LTS : samba regression (USN-2950-5) (Badlock)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2016-BE53260726.NASL
    description Security fix for CVE-2015-5370, CVE-2016-2110, CVE-2016-2111, CVE-2016-2112, CVE-2016-2113, CVE-2016-2114, CVE-2016-2115, CVE-2016-2118 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2016-12-05
    plugin id 90519
    published 2016-04-14
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90519
    title Fedora 23 : samba-4.3.8-0.fc23 (2016-be53260726) (Badlock)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2016-0612.NASL
    description An update for samba4 and samba is now available for Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7, respectively. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Samba is an open source implementation of the Server Message Block (SMB) protocol and the related Common Internet File System (CIFS) protocol, which allow PC-compatible machines to share files, printers, and various information. The following packages have been upgraded to a newer upstream version: Samba (4.2.10). Refer to the Release Notes listed in the References section for a complete list of changes. Security Fix(es) : * Multiple flaws were found in Samba's DCE/RPC protocol implementation. A remote, authenticated attacker could use these flaws to cause a denial of service against the Samba server (high CPU load or a crash) or, possibly, execute arbitrary code with the permissions of the user running Samba (root). This flaw could also be used to downgrade a secure DCE/RPC connection by a man-in-the-middle attacker taking control of an Active Directory (AD) object and compromising the security of a Samba Active Directory Domain Controller (DC). (CVE-2015-5370) Note: While Samba packages as shipped in Red Hat Enterprise Linux do not support running Samba as an AD DC, this flaw applies to all roles Samba implements. * A protocol flaw, publicly referred to as Badlock, was found in the Security Account Manager Remote Protocol (MS-SAMR) and the Local Security Authority (Domain Policy) Remote Protocol (MS-LSAD). Any authenticated DCE/RPC connection that a client initiates against a server could be used by a man-in-the-middle attacker to impersonate the authenticated user against the SAMR or LSA service on the server. As a result, the attacker would be able to get read/write access to the Security Account Manager database, and use this to reveal all passwords or any other potentially sensitive information in that database. (CVE-2016-2118) * Several flaws were found in Samba's implementation of NTLMSSP authentication. An unauthenticated, man-in-the-middle attacker could use this flaw to clear the encryption and integrity flags of a connection, causing data to be transmitted in plain text. The attacker could also force the client or server into sending data in plain text even if encryption was explicitly requested for that connection. (CVE-2016-2110) * It was discovered that Samba configured as a Domain Controller would establish a secure communication channel with a machine using a spoofed computer name. A remote attacker able to observe network traffic could use this flaw to obtain session-related information about the spoofed machine. (CVE-2016-2111) * It was found that Samba's LDAP implementation did not enforce integrity protection for LDAP connections. A man-in-the-middle attacker could use this flaw to downgrade LDAP connections to use no integrity protection, allowing them to hijack such connections. (CVE-2016-2112) * It was found that Samba did not validate SSL/TLS certificates in certain connections. A man-in-the-middle attacker could use this flaw to spoof a Samba server using a specially crafted SSL/TLS certificate. (CVE-2016-2113) * It was discovered that Samba did not enforce Server Message Block (SMB) signing for clients using the SMB1 protocol. A man-in-the-middle attacker could use this flaw to modify traffic between a client and a server. (CVE-2016-2114) * It was found that Samba did not enable integrity protection for IPC traffic by default. A man-in-the-middle attacker could use this flaw to view and modify the data sent between a Samba server and a client. (CVE-2016-2115) Red Hat would like to thank the Samba project for reporting these issues. Upstream acknowledges Jouni Knuutinen (Synopsis) as the original reporter of CVE-2015-5370; and Stefan Metzmacher (SerNet) as the original reporter of CVE-2016-2118, CVE-2016-2110, CVE-2016-2112, CVE-2016-2113, CVE-2016-2114, and CVE-2016-2115.
    last seen 2019-02-21
    modified 2018-12-07
    plugin id 90492
    published 2016-04-13
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90492
    title RHEL 6 / 7 : samba and samba4 (RHSA-2016:0612) (Badlock)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2016-0620.NASL
    description An update for samba4 is now available for Red Hat Enterprise Linux 6.2 Advanced Update Support, Red Hat Enterprise Linux 6.4 Advanced Update Support, Red Hat Enterprise Linux 6.5 Advanced Update Support, and Red Hat Enterprise Linux 6.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Samba is an open source implementation of the Server Message Block (SMB) or Common Internet File System (CIFS) protocol, which allows PC-compatible machines to share files, printers, and other information. The following packages have been upgraded to a newer upstream version: Samba (4.2.10). Refer to the Release Notes listed in the References section for a complete list of changes. Security Fix(es) : * Multiple flaws were found in Samba's DCE/RPC protocol implementation. A remote, authenticated attacker could use these flaws to cause a denial of service against the Samba server (high CPU load or a crash) or, possibly, execute arbitrary code with the permissions of the user running Samba (root). This flaw could also be used to downgrade a secure DCE/RPC connection by a man-in-the-middle attacker taking control of an Active Directory (AD) object and compromising the security of a Samba Active Directory Domain Controller (DC). (CVE-2015-5370) Note: While Samba packages as shipped in Red Hat Enterprise Linux do not support running Samba as an AD DC, this flaw applies to all roles Samba implements. * A protocol flaw, publicly referred to as Badlock, was found in the Security Account Manager Remote Protocol (MS-SAMR) and the Local Security Authority (Domain Policy) Remote Protocol (MS-LSAD). Any authenticated DCE/RPC connection that a client initiates against a server could be used by a man-in-the-middle attacker to impersonate the authenticated user against the SAMR or LSA service on the server. As a result, the attacker would be able to get read/write access to the Security Account Manager database, and use this to reveal all passwords or any other potentially sensitive information in that database. (CVE-2016-2118) * Several flaws were found in Samba's implementation of NTLMSSP authentication. An unauthenticated, man-in-the-middle attacker could use this flaw to clear the encryption and integrity flags of a connection, causing data to be transmitted in plain text. The attacker could also force the client or server into sending data in plain text even if encryption was explicitly requested for that connection. (CVE-2016-2110) * It was discovered that Samba configured as a Domain Controller would establish a secure communication channel with a machine using a spoofed computer name. A remote attacker able to observe network traffic could use this flaw to obtain session-related information about the spoofed machine. (CVE-2016-2111) * It was found that Samba's LDAP implementation did not enforce integrity protection for LDAP connections. A man-in-the-middle attacker could use this flaw to downgrade LDAP connections to use no integrity protection, allowing them to hijack such connections. (CVE-2016-2112) * It was found that Samba did not validate SSL/TLS certificates in certain connections. A man-in-the-middle attacker could use this flaw to spoof a Samba server using a specially crafted SSL/TLS certificate. (CVE-2016-2113) * It was discovered that Samba did not enforce Server Message Block (SMB) signing for clients using the SMB1 protocol. A man-in-the-middle attacker could use this flaw to modify traffic between a client and a server. (CVE-2016-2114) * It was found that Samba did not enable integrity protection for IPC traffic by default. A man-in-the-middle attacker could use this flaw to view and modify the data sent between a Samba server and a client. (CVE-2016-2115) Red Hat would like to thank the Samba project for reporting these issues. Upstream acknowledges Jouni Knuutinen (Synopsis) as the original reporter of CVE-2015-5370; and Stefan Metzmacher (SerNet) as the original reporter of CVE-2016-2118, CVE-2016-2110, CVE-2016-2112, CVE-2016-2113, CVE-2016-2114, and CVE-2016-2115.
    last seen 2019-02-21
    modified 2018-12-20
    plugin id 90497
    published 2016-04-13
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90497
    title RHEL 6 : samba4 (RHSA-2016:0620) (Badlock)
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DSA-3548.NASL
    description Several vulnerabilities have been discovered in Samba, a SMB/CIFS file, print, and login server for Unix. The Common Vulnerabilities and Exposures project identifies the following issues : - CVE-2015-5370 Jouni Knuutinen from Synopsys discovered flaws in the Samba DCE-RPC code which can lead to denial of service (crashes and high cpu consumption) and man-in-the-middle attacks. - CVE-2016-2110 Stefan Metzmacher of SerNet and the Samba Team discovered that the feature negotiation of NTLMSSP does not protect against downgrade attacks. - CVE-2016-2111 When Samba is configured as domain controller, it allows remote attackers to spoof the computer name of a secure channel's endpoint, and obtain sensitive session information. This flaw corresponds to the same vulnerability as CVE-2015-0005 for Windows, discovered by Alberto Solino from Core Security. - CVE-2016-2112 Stefan Metzmacher of SerNet and the Samba Team discovered that a man-in-the-middle attacker can downgrade LDAP connections to avoid integrity protection. - CVE-2016-2113 Stefan Metzmacher of SerNet and the Samba Team discovered that man-in-the-middle attacks are possible for client triggered LDAP connections and ncacn_http connections. - CVE-2016-2114 Stefan Metzmacher of SerNet and the Samba Team discovered that Samba does not enforce required smb signing even if explicitly configured. - CVE-2016-2115 Stefan Metzmacher of SerNet and the Samba Team discovered that SMB connections for IPC traffic are not integrity-protected. - CVE-2016-2118 Stefan Metzmacher of SerNet and the Samba Team discovered that a man-in-the-middle attacker can intercept any DCERPC traffic between a client and a server in order to impersonate the client and obtain the same privileges as the authenticated user account.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 90515
    published 2016-04-14
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90515
    title Debian DSA-3548-1 : samba - security update (Badlock)
  • NASL family Amazon Linux Local Security Checks
    NASL id ALA_ALAS-2016-686.NASL
    description Multiple flaws were found in Samba's DCE/RPC protocol implementation. A remote, authenticated attacker could use these flaws to cause a denial of service against the Samba server (high CPU load or a crash) or, possibly, execute arbitrary code with the permissions of the user running Samba (root). This flaw could also be used to downgrade a secure DCE/RPC connection by a man-in-the-middle attacker taking control of an Active Directory (AD) object and compromising the security of a Samba Active Directory Domain Controller (DC). (CVE-2015-5370) A protocol flaw, publicly referred to as Badlock, was found in the Security Account Manager Remote Protocol (MS-SAMR) and the Local Security Authority (Domain Policy) Remote Protocol (MS-LSAD). Any authenticated DCE/RPC connection that a client initiates against a server could be used by a man-in-the-middle attacker to impersonate the authenticated user against the SAMR or LSA service on the server. As a result, the attacker would be able to get read/write access to the Security Account Manager database, and use this to reveal all passwords or any other potentially sensitive information in that database. (CVE-2016-2118) Several flaws were found in Samba's implementation of NTLMSSP authentication. An unauthenticated, man-in-the-middle attacker could use this flaw to clear the encryption and integrity flags of a connection, causing data to be transmitted in plain text. The attacker could also force the client or server into sending data in plain text even if encryption was explicitly requested for that connection. (CVE-2016-2110) It was discovered that Samba configured as a Domain Controller would establish a secure communication channel with a machine using a spoofed computer name. A remote attacker able to observe network traffic could use this flaw to obtain session-related information about the spoofed machine. (CVE-2016-2111) It was found that Samba's LDAP implementation did not enforce integrity protection for LDAP connections. A man-in-the-middle attacker could use this flaw to downgrade LDAP connections to use no integrity protection, allowing them to hijack such connections. (CVE-2016-2112) It was found that Samba did not validate SSL/TLS certificates in certain connections. A man-in-the-middle attacker could use this flaw to spoof a Samba server using a specially crafted SSL/TLS certificate. (CVE-2016-2113) It was discovered that Samba did not enforce Server Message Block (SMB) signing for clients using the SMB1 protocol. A man-in-the-middle attacker could use this flaw to modify traffic between a client and a server. (CVE-2016-2114) It was found that Samba did not enable integrity protection for IPC traffic by default. A man-in-the-middle attacker could use this flaw to view and modify the data sent between a Samba server and a client. (CVE-2016-2115)
    last seen 2019-02-21
    modified 2018-04-18
    plugin id 90514
    published 2016-04-14
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90514
    title Amazon Linux AMI : samba (ALAS-2016-686) (Badlock)
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2016-490.NASL
    description This update fixes these security vulnerabilities : - CVE-2015-5370: DCERPC server and client were vulnerable to DOS and MITM attacks (bsc#936862). - CVE-2016-2110: A man-in-the-middle could have downgraded NTLMSSP authentication (bsc#973031). - CVE-2016-2111: Domain controller netlogon member computer could have been spoofed (bsc#973032). - CVE-2016-2112: LDAP conenctions were vulnerable to downgrade and MITM attack (bsc#973033). - CVE-2016-2113: TLS certificate validation were missing (bsc#973034). - CVE-2016-2114: 'server signing = mandatory' not enforced (bsc#973035). - CVE-2016-2115: Named pipe IPC were vulnerable to MITM attacks (bsc#973036). - CVE-2016-2118: 'Badlock' DCERPC impersonation of authenticated account were possible (bsc#971965). The openSUSE 13.1 update also upgrades to samba 4.2.4 as 4.1.x versions are no longer supported by upstream. As a side effect, libpdb0 package was replaced by libsamba-passdb0.
    last seen 2019-02-21
    modified 2016-12-07
    plugin id 90609
    published 2016-04-21
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90609
    title openSUSE Security Update : samba (openSUSE-2016-490) (Badlock)
  • NASL family Ubuntu Local Security Checks
    NASL id UBUNTU_USN-2950-4.NASL
    description USN-2950-1 fixed vulnerabilities in Samba. The backported fixes introduced in Ubuntu 12.04 LTS caused interoperability issues. This update fixes compatibility with certain NAS devices, and allows connecting to Samba 3.6 servers by relaxing the 'client ipc signing' parameter to 'auto'. We apologize for the inconvenience. Jouni Knuutinen discovered that Samba contained multiple flaws in the DCE/RPC implementation. A remote attacker could use this issue to perform a denial of service, downgrade secure connections by performing a man in the middle attack, or possibly execute arbitrary code. (CVE-2015-5370) Stefan Metzmacher discovered that Samba contained multiple flaws in the NTLMSSP authentication implementation. A remote attacker could use this issue to downgrade connections to plain text by performing a man in the middle attack. (CVE-2016-2110) Alberto Solino discovered that a Samba domain controller would establish a secure connection to a server with a spoofed computer name. A remote attacker could use this issue to obtain sensitive information. (CVE-2016-2111) Stefan Metzmacher discovered that the Samba LDAP implementation did not enforce integrity protection. A remote attacker could use this issue to hijack LDAP connections by performing a man in the middle attack. (CVE-2016-2112) Stefan Metzmacher discovered that Samba did not validate TLS certificates. A remote attacker could use this issue to spoof a Samba server. (CVE-2016-2113) Stefan Metzmacher discovered that Samba did not enforce SMB signing even if configured to. A remote attacker could use this issue to perform a man in the middle attack. (CVE-2016-2114) Stefan Metzmacher discovered that Samba did not enable integrity protection for IPC traffic. A remote attacker could use this issue to perform a man in the middle attack. (CVE-2016-2115) Stefan Metzmacher discovered that Samba incorrectly handled the MS-SAMR and MS-LSAD protocols. A remote attacker could use this flaw with a man in the middle attack to impersonate users and obtain sensitive information from the Security Account Manager database. This flaw is known as Badlock. (CVE-2016-2118) Samba has been updated to 4.3.8 in Ubuntu 14.04 LTS and Ubuntu 15.10. Ubuntu 12.04 LTS has been updated to 3.6.25 with backported security fixes. In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes. Configuration changes may be required in certain environments. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-12-01
    plugin id 91256
    published 2016-05-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=91256
    title Ubuntu 12.04 LTS : samba regressions (USN-2950-4) (Badlock)
  • NASL family Misc.
    NASL id SAMBA_4_3_7.NASL
    description The version of Samba running on the remote host is 3.x or 4.2.x prior to 4.2.10, 4.3.x prior to 4.3.7, or 4.4.x prior to 4.4.1. It is, therefore, affected by multiple vulnerabilities : - A flaw exists in the DCE-RPC client when handling specially crafted DCE-RPC packets. A man-in-the-middle (MitM) attacker can exploit this to downgrade the connection security, cause a denial of service through resource exhaustion, or potentially execute arbitrary code. (CVE-2015-5370) - A flaw exists in the implementation of NTLMSSP authentication. A MitM attacker can exploit this to clear the NTLMSSP_NEGOTIATE_SIGN and NTLMSSP_NEGOTIATE_SEAL settings, take over the connections, cause traffic to be sent unencrypted, or have other unspecified impact. (CVE-2016-2110) - A flaw exists in NETLOGON due to a failure to properly establish a secure channel connection. A MitM attacker can exploit this to spoof the computer names of a secure channel's endpoints, potentially gaining session information. (CVE-2016-2111) - A flaw exists in the integrity protection mechanisms that allows a MitM attacker to downgrade a secure LDAP connection to an insecure version. (CVE-2016-2112) - A flaw exists due to improper validation of TLS certificates for the LDAP and HTTP protocols. A MitM attacker can exploit this, via a crafted certificate, to spoof a server, resulting in the disclosure or manipulation of the transmitted traffic. (CVE-2016-2113) - A flaw exists due to a failure to enforce the 'server signing = mandatory' option in smb.conf for clients using the SMB1 protocol. A MitM attacker can exploit this to conduct spoofing attacks. (CVE-2016-2114) - A flaw exists due to a failure to perform integrity checking for SMB client connections. A MitM attacker can exploit this to conduct spoofing attacks since the protection mechanisms for DCERPC communication sessions are inherited from the underlying SMB connection. (CVE-2016-2115) - A flaw, known as Badlock, exists in the Security Account Manager (SAM) and Local Security Authority (Domain Policy) (LSAD) protocols due to improper authentication level negotiation over Remote Procedure Call (RPC) channels. A MitM attacker who is able to able to intercept the traffic between a client and a server hosting a SAM database can exploit this flaw to force a downgrade of the authentication level, which allows the execution of arbitrary Samba network calls in the context of the intercepted user, such as viewing or modifying sensitive security data in the Active Directory (AD) database or disabling critical services. (CVE-2016-2118)
    last seen 2019-02-21
    modified 2018-11-15
    plugin id 90508
    published 2016-04-13
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90508
    title Samba 3.x < 4.2.10 / 4.2.x < 4.2.10 / 4.3.x < 4.3.7 / 4.4.x < 4.4.1 Multiple Vulnerabilities (Badlock)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2016-48B3761BAA.NASL
    description Security fix for CVE-2015-5370, CVE-2016-2110, CVE-2016-2111, CVE-2016-2112, CVE-2016-2113, CVE-2016-2114, CVE-2016-2115, CVE-2016-2118 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2016-12-05
    plugin id 90516
    published 2016-04-14
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90516
    title Fedora 22 : samba-4.2.11-0.fc22 (2016-48b3761baa) (Badlock)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2016-0612.NASL
    description An update for samba4 and samba is now available for Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7, respectively. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Samba is an open source implementation of the Server Message Block (SMB) protocol and the related Common Internet File System (CIFS) protocol, which allow PC-compatible machines to share files, printers, and various information. The following packages have been upgraded to a newer upstream version: Samba (4.2.10). Refer to the Release Notes listed in the References section for a complete list of changes. Security Fix(es) : * Multiple flaws were found in Samba's DCE/RPC protocol implementation. A remote, authenticated attacker could use these flaws to cause a denial of service against the Samba server (high CPU load or a crash) or, possibly, execute arbitrary code with the permissions of the user running Samba (root). This flaw could also be used to downgrade a secure DCE/RPC connection by a man-in-the-middle attacker taking control of an Active Directory (AD) object and compromising the security of a Samba Active Directory Domain Controller (DC). (CVE-2015-5370) Note: While Samba packages as shipped in Red Hat Enterprise Linux do not support running Samba as an AD DC, this flaw applies to all roles Samba implements. * A protocol flaw, publicly referred to as Badlock, was found in the Security Account Manager Remote Protocol (MS-SAMR) and the Local Security Authority (Domain Policy) Remote Protocol (MS-LSAD). Any authenticated DCE/RPC connection that a client initiates against a server could be used by a man-in-the-middle attacker to impersonate the authenticated user against the SAMR or LSA service on the server. As a result, the attacker would be able to get read/write access to the Security Account Manager database, and use this to reveal all passwords or any other potentially sensitive information in that database. (CVE-2016-2118) * Several flaws were found in Samba's implementation of NTLMSSP authentication. An unauthenticated, man-in-the-middle attacker could use this flaw to clear the encryption and integrity flags of a connection, causing data to be transmitted in plain text. The attacker could also force the client or server into sending data in plain text even if encryption was explicitly requested for that connection. (CVE-2016-2110) * It was discovered that Samba configured as a Domain Controller would establish a secure communication channel with a machine using a spoofed computer name. A remote attacker able to observe network traffic could use this flaw to obtain session-related information about the spoofed machine. (CVE-2016-2111) * It was found that Samba's LDAP implementation did not enforce integrity protection for LDAP connections. A man-in-the-middle attacker could use this flaw to downgrade LDAP connections to use no integrity protection, allowing them to hijack such connections. (CVE-2016-2112) * It was found that Samba did not validate SSL/TLS certificates in certain connections. A man-in-the-middle attacker could use this flaw to spoof a Samba server using a specially crafted SSL/TLS certificate. (CVE-2016-2113) * It was discovered that Samba did not enforce Server Message Block (SMB) signing for clients using the SMB1 protocol. A man-in-the-middle attacker could use this flaw to modify traffic between a client and a server. (CVE-2016-2114) * It was found that Samba did not enable integrity protection for IPC traffic by default. A man-in-the-middle attacker could use this flaw to view and modify the data sent between a Samba server and a client. (CVE-2016-2115) Red Hat would like to thank the Samba project for reporting these issues. Upstream acknowledges Jouni Knuutinen (Synopsis) as the original reporter of CVE-2015-5370; and Stefan Metzmacher (SerNet) as the original reporter of CVE-2016-2118, CVE-2016-2110, CVE-2016-2112, CVE-2016-2113, CVE-2016-2114, and CVE-2016-2115.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 90450
    published 2016-04-13
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90450
    title CentOS 6 / 7 : ipa / libldb / libtalloc / libtdb / libtevent / openchange / samba / samba4 (CESA-2016:0612) (Badlock)
  • NASL family Ubuntu Local Security Checks
    NASL id UBUNTU_USN-2950-1.NASL
    description Jouni Knuutinen discovered that Samba contained multiple flaws in the DCE/RPC implementation. A remote attacker could use this issue to perform a denial of service, downgrade secure connections by performing a man in the middle attack, or possibly execute arbitrary code. (CVE-2015-5370) Stefan Metzmacher discovered that Samba contained multiple flaws in the NTLMSSP authentication implementation. A remote attacker could use this issue to downgrade connections to plain text by performing a man in the middle attack. (CVE-2016-2110) Alberto Solino discovered that a Samba domain controller would establish a secure connection to a server with a spoofed computer name. A remote attacker could use this issue to obtain sensitive information. (CVE-2016-2111) Stefan Metzmacher discovered that the Samba LDAP implementation did not enforce integrity protection. A remote attacker could use this issue to hijack LDAP connections by performing a man in the middle attack. (CVE-2016-2112) Stefan Metzmacher discovered that Samba did not validate TLS certificates. A remote attacker could use this issue to spoof a Samba server. (CVE-2016-2113) Stefan Metzmacher discovered that Samba did not enforce SMB signing even if configured to. A remote attacker could use this issue to perform a man in the middle attack. (CVE-2016-2114) Stefan Metzmacher discovered that Samba did not enable integrity protection for IPC traffic. A remote attacker could use this issue to perform a man in the middle attack. (CVE-2016-2115) Stefan Metzmacher discovered that Samba incorrectly handled the MS-SAMR and MS-LSAD protocols. A remote attacker could use this flaw with a man in the middle attack to impersonate users and obtain sensitive information from the Security Account Manager database. This flaw is known as Badlock. (CVE-2016-2118) Samba has been updated to 4.3.8 in Ubuntu 14.04 LTS and Ubuntu 15.10. Ubuntu 12.04 LTS has been updated to 3.6.25 with backported security fixes. In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes. Configuration changes may be required in certain environments. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-12-01
    plugin id 90588
    published 2016-04-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90588
    title Ubuntu 12.04 LTS / 14.04 LTS / 15.10 : samba vulnerabilities (USN-2950-1) (Badlock)
  • NASL family Slackware Local Security Checks
    NASL id SLACKWARE_SSA_2016-106-02.NASL
    description New samba packages are available for Slackware 14.0, 14.1, and -current to fix security issues.
    last seen 2018-09-01
    modified 2016-10-19
    plugin id 90548
    published 2016-04-18
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90548
    title Slackware 14.0 / 14.1 / current : samba (SSA:2016-106-02) (Badlock)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2016-0618.NASL
    description An update for samba is now available for Red Hat Enterprise Linux 7.1 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Samba is an open source implementation of the Server Message Block (SMB) protocol and the related Common Internet File System (CIFS) protocol, which allow PC-compatible machines to share files, printers, and various information. The following packages have been upgraded to a newer upstream version: Samba (4.2.10). Refer to the Release Notes listed in the References section for a complete list of changes. Security Fix(es) : * Multiple flaws were found in Samba's DCE/RPC protocol implementation. A remote, authenticated attacker could use these flaws to cause a denial of service against the Samba server (high CPU load or a crash) or, possibly, execute arbitrary code with the permissions of the user running Samba (root). This flaw could also be used to downgrade a secure DCE/RPC connection by a man-in-the-middle attacker taking control of an Active Directory (AD) object and compromising the security of a Samba Active Directory Domain Controller (DC). (CVE-2015-5370) Note: While Samba packages as shipped in Red Hat Enterprise Linux do not support running Samba as an AD DC, this flaw applies to all roles Samba implements. * A protocol flaw, publicly referred to as Badlock, was found in the Security Account Manager Remote Protocol (MS-SAMR) and the Local Security Authority (Domain Policy) Remote Protocol (MS-LSAD). Any authenticated DCE/RPC connection that a client initiates against a server could be used by a man-in-the-middle attacker to impersonate the authenticated user against the SAMR or LSA service on the server. As a result, the attacker would be able to get read/write access to the Security Account Manager database, and use this to reveal all passwords or any other potentially sensitive information in that database. (CVE-2016-2118) * Several flaws were found in Samba's implementation of NTLMSSP authentication. An unauthenticated, man-in-the-middle attacker could use this flaw to clear the encryption and integrity flags of a connection, causing data to be transmitted in plain text. The attacker could also force the client or server into sending data in plain text even if encryption was explicitly requested for that connection. (CVE-2016-2110) * It was discovered that Samba configured as a Domain Controller would establish a secure communication channel with a machine using a spoofed computer name. A remote attacker able to observe network traffic could use this flaw to obtain session-related information about the spoofed machine. (CVE-2016-2111) * It was found that Samba's LDAP implementation did not enforce integrity protection for LDAP connections. A man-in-the-middle attacker could use this flaw to downgrade LDAP connections to use no integrity protection, allowing them to hijack such connections. (CVE-2016-2112) * It was found that Samba did not validate SSL/TLS certificates in certain connections. A man-in-the-middle attacker could use this flaw to spoof a Samba server using a specially crafted SSL/TLS certificate. (CVE-2016-2113) * It was discovered that Samba did not enforce Server Message Block (SMB) signing for clients using the SMB1 protocol. A man-in-the-middle attacker could use this flaw to modify traffic between a client and a server. (CVE-2016-2114) * It was found that Samba did not enable integrity protection for IPC traffic by default. A man-in-the-middle attacker could use this flaw to view and modify the data sent between a Samba server and a client. (CVE-2016-2115) Red Hat would like to thank the Samba project for reporting these issues. Upstream acknowledges Jouni Knuutinen (Synopsis) as the original reporter of CVE-2015-5370; and Stefan Metzmacher (SerNet) as the original reporter of CVE-2016-2118, CVE-2016-2110, CVE-2016-2112, CVE-2016-2113, CVE-2016-2114, and CVE-2016-2115.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 90495
    published 2016-04-13
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90495
    title RHEL 7 : samba (RHSA-2016:0618) (Badlock)
redhat via4
advisories
  • rhsa
    id RHSA-2016:0612
  • rhsa
    id RHSA-2016:0614
  • rhsa
    id RHSA-2016:0618
  • rhsa
    id RHSA-2016:0620
rpms
  • libtdb-0:1.3.8-1.el6_7
  • libtdb-devel-0:1.3.8-1.el6_7
  • python-tdb-0:1.3.8-1.el6_7
  • tdb-tools-0:1.3.8-1.el6_7
  • libtalloc-0:2.1.5-1.el6_7
  • libtalloc-devel-0:2.1.5-1.el6_7
  • pytalloc-0:2.1.5-1.el6_7
  • pytalloc-devel-0:2.1.5-1.el6_7
  • ldb-tools-0:1.1.25-2.el6_7
  • libldb-0:1.1.25-2.el6_7
  • libldb-devel-0:1.1.25-2.el6_7
  • pyldb-0:1.1.25-2.el6_7
  • pyldb-devel-0:1.1.25-2.el6_7
  • libtevent-0:0.9.26-2.el6_7
  • libtevent-devel-0:0.9.26-2.el6_7
  • python-tevent-0:0.9.26-2.el6_7
  • ipa-admintools-0:3.0.0-47.el6_7.2
  • ipa-client-0:3.0.0-47.el6_7.2
  • ipa-python-0:3.0.0-47.el6_7.2
  • ipa-server-0:3.0.0-47.el6_7.2
  • ipa-server-selinux-0:3.0.0-47.el6_7.2
  • ipa-server-trust-ad-0:3.0.0-47.el6_7.2
  • openchange-0:1.0-7.el6_7
  • openchange-client-0:1.0-7.el6_7
  • openchange-devel-0:1.0-7.el6_7
  • openchange-devel-docs-0:1.0-7.el6_7
  • samba4-0:4.2.10-6.el6_7
  • samba4-client-0:4.2.10-6.el6_7
  • samba4-common-0:4.2.10-6.el6_7
  • samba4-dc-0:4.2.10-6.el6_7
  • samba4-dc-libs-0:4.2.10-6.el6_7
  • samba4-devel-0:4.2.10-6.el6_7
  • samba4-libs-0:4.2.10-6.el6_7
  • samba4-pidl-0:4.2.10-6.el6_7
  • samba4-python-0:4.2.10-6.el6_7
  • samba4-test-0:4.2.10-6.el6_7
  • samba4-winbind-0:4.2.10-6.el6_7
  • samba4-winbind-clients-0:4.2.10-6.el6_7
  • samba4-winbind-krb5-locator-0:4.2.10-6.el6_7
  • libtalloc-0:2.1.5-1.el7_2
  • libtalloc-devel-0:2.1.5-1.el7_2
  • pytalloc-0:2.1.5-1.el7_2
  • pytalloc-devel-0:2.1.5-1.el7_2
  • libtdb-0:1.3.8-1.el7_2
  • libtdb-devel-0:1.3.8-1.el7_2
  • python-tdb-0:1.3.8-1.el7_2
  • tdb-tools-0:1.3.8-1.el7_2
  • libtevent-0:0.9.26-1.el7_2
  • libtevent-devel-0:0.9.26-1.el7_2
  • python-tevent-0:0.9.26-1.el7_2
  • ldb-tools-0:1.1.25-1.el7_2
  • libldb-0:1.1.25-1.el7_2
  • libldb-devel-0:1.1.25-1.el7_2
  • pyldb-0:1.1.25-1.el7_2
  • pyldb-devel-0:1.1.25-1.el7_2
  • ipa-admintools-0:4.2.0-15.el7_2.6.1
  • ipa-client-0:4.2.0-15.el7_2.6.1
  • ipa-python-0:4.2.0-15.el7_2.6.1
  • ipa-server-0:4.2.0-15.el7_2.6.1
  • ipa-server-dns-0:4.2.0-15.el7_2.6.1
  • ipa-server-trust-ad-0:4.2.0-15.el7_2.6.1
  • openchange-0:2.0-10.el7_2
  • openchange-client-0:2.0-10.el7_2
  • openchange-devel-0:2.0-10.el7_2
  • openchange-devel-docs-0:2.0-10.el7_2
  • ctdb-0:4.2.10-6.el7_2
  • ctdb-devel-0:4.2.10-6.el7_2
  • ctdb-tests-0:4.2.10-6.el7_2
  • libsmbclient-0:4.2.10-6.el7_2
  • libsmbclient-devel-0:4.2.10-6.el7_2
  • libwbclient-0:4.2.10-6.el7_2
  • libwbclient-devel-0:4.2.10-6.el7_2
  • samba-0:4.2.10-6.el7_2
  • samba-client-0:4.2.10-6.el7_2
  • samba-client-libs-0:4.2.10-6.el7_2
  • samba-common-0:4.2.10-6.el7_2
  • samba-common-libs-0:4.2.10-6.el7_2
  • samba-common-tools-0:4.2.10-6.el7_2
  • samba-dc-0:4.2.10-6.el7_2
  • samba-dc-libs-0:4.2.10-6.el7_2
  • samba-devel-0:4.2.10-6.el7_2
  • samba-libs-0:4.2.10-6.el7_2
  • samba-pidl-0:4.2.10-6.el7_2
  • samba-python-0:4.2.10-6.el7_2
  • samba-test-0:4.2.10-6.el7_2
  • samba-test-devel-0:4.2.10-6.el7_2
  • samba-test-libs-0:4.2.10-6.el7_2
  • samba-vfs-glusterfs-0:4.2.10-6.el7_2
  • samba-winbind-0:4.2.10-6.el7_2
  • samba-winbind-clients-0:4.2.10-6.el7_2
  • samba-winbind-krb5-locator-0:4.2.10-6.el7_2
  • samba-winbind-modules-0:4.2.10-6.el7_2
refmap via4
bid 86011
confirm
debian DSA-3548
fedora
  • FEDORA-2016-383fce04e2
  • FEDORA-2016-48b3761baa
  • FEDORA-2016-be53260726
gentoo GLSA-201612-47
misc http://badlock.org/
sectrack 1035533
slackware SSA:2016-106-02
suse
  • openSUSE-SU-2016:1106
  • openSUSE-SU-2016:1107
ubuntu
  • USN-2950-1
  • USN-2950-2
  • USN-2950-3
  • USN-2950-4
  • USN-2950-5
Last major update 30-12-2016 - 21:59
Published 24-04-2016 - 20:59
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