ID CVE-2016-0777
Summary The resend_bytes function in roaming_common.c in the client in OpenSSH 5.x, 6.x, and 7.x before 7.1p2 allows remote servers to obtain sensitive information from process memory by requesting transmission of an entire buffer, as demonstrated by reading a private key.
References
Vulnerable Configurations
  • cpe:2.3:a:sophos:unified_threat_management_software:9.318
    cpe:2.3:a:sophos:unified_threat_management_software:9.318
  • cpe:2.3:a:sophos:unified_threat_management_software:9.353
    cpe:2.3:a:sophos:unified_threat_management_software:9.353
  • Sophos Unified Threat Management (UTM) 110
    cpe:2.3:h:sophos:unified_threat_management:110
  • Sophos Unified Threat Management (UTM) 120
    cpe:2.3:h:sophos:unified_threat_management:120
  • Sophos Unified Threat Management (UTM) 220
    cpe:2.3:h:sophos:unified_threat_management:220
  • Sophos Unified Threat Management (UTM) 320
    cpe:2.3:h:sophos:unified_threat_management:320
  • Sophos Unified Threat Management (UTM) 425
    cpe:2.3:h:sophos:unified_threat_management:425
  • Sophos Unified Threat Management (UTM) 525
    cpe:2.3:h:sophos:unified_threat_management:525
  • Sophos Unified Threat Management (UTM) 625
    cpe:2.3:h:sophos:unified_threat_management:625
  • Oracle Linux 7.0
    cpe:2.3:o:oracle:linux:7.0
  • Oracle Solaris 11.3
    cpe:2.3:o:oracle:solaris:11.3
  • OpenBSD OpenSSH 5.0
    cpe:2.3:a:openbsd:openssh:5.0
  • OpenBSD OpenSSH 5.0 Patch 1
    cpe:2.3:a:openbsd:openssh:5.0:p1
  • OpenBSD OpenSSH 5.1
    cpe:2.3:a:openbsd:openssh:5.1
  • OpenBSD OpenSSH 5.1 Patch 1
    cpe:2.3:a:openbsd:openssh:5.1:p1
  • OpenBSD OpenSSH 5.2
    cpe:2.3:a:openbsd:openssh:5.2
  • OpenBSD OpenSSH 5.2 Patch 1
    cpe:2.3:a:openbsd:openssh:5.2:p1
  • OpenBSD OpenSSH 5.3
    cpe:2.3:a:openbsd:openssh:5.3
  • OpenBSD OpenSSH 5.3 Patch 1
    cpe:2.3:a:openbsd:openssh:5.3:p1
  • OpenBSD OpenSSH 5.4
    cpe:2.3:a:openbsd:openssh:5.4
  • OpenBSD OpenSSH 5.4 Patch 1
    cpe:2.3:a:openbsd:openssh:5.4:p1
  • OpenBSD OpenSSH 5.5
    cpe:2.3:a:openbsd:openssh:5.5
  • OpenBSD OpenSSH 5.5 Patch 1
    cpe:2.3:a:openbsd:openssh:5.5:p1
  • OpenBSD OpenSSH 5.6
    cpe:2.3:a:openbsd:openssh:5.6
  • OpenBSD OpenSSH 5.6 Patch 1
    cpe:2.3:a:openbsd:openssh:5.6:p1
  • OpenBSD OpenSSH 5.7
    cpe:2.3:a:openbsd:openssh:5.7
  • OpenBSD OpenSSH 5.7 Patch 1
    cpe:2.3:a:openbsd:openssh:5.7:p1
  • OpenBSD OpenSSH 5.8
    cpe:2.3:a:openbsd:openssh:5.8
  • OpenBSD OpenSSH 5.8 Patch 1
    cpe:2.3:a:openbsd:openssh:5.8:p1
  • OpenBSD OpenSSH 5.9
    cpe:2.3:a:openbsd:openssh:5.9
  • OpenBSD OpenSSH 5.9 Patch 1
    cpe:2.3:a:openbsd:openssh:5.9:p1
  • OpenBSD OpenSSH 6.0
    cpe:2.3:a:openbsd:openssh:6.0
  • OpenBSD OpenSSH 6.0 Patch 1
    cpe:2.3:a:openbsd:openssh:6.0:p1
  • OpenBSD OpenSSH 6.1
    cpe:2.3:a:openbsd:openssh:6.1
  • OpenBSD OpenSSH 6.1 Patch 1
    cpe:2.3:a:openbsd:openssh:6.1:p1
  • OpenBSD OpenSSH 6.2
    cpe:2.3:a:openbsd:openssh:6.2
  • OpenBSD OpenSSH 6.2 Patch 1
    cpe:2.3:a:openbsd:openssh:6.2:p1
  • OpenBSD OpenSSH 6.2 Patch 2
    cpe:2.3:a:openbsd:openssh:6.2:p2
  • OpenBSD OpenSSH 6.3
    cpe:2.3:a:openbsd:openssh:6.3
  • OpenBSD OpenSSH 6.3 Patch 1
    cpe:2.3:a:openbsd:openssh:6.3:p1
  • OpenBSD OpenSSH 6.4
    cpe:2.3:a:openbsd:openssh:6.4
  • OpenBSD OpenSSH 6.4 Patch 1
    cpe:2.3:a:openbsd:openssh:6.4:p1
  • OpenBSD OpenSSH 6.5
    cpe:2.3:a:openbsd:openssh:6.5
  • OpenBSD OpenSSH 6.5 Patch 1
    cpe:2.3:a:openbsd:openssh:6.5:p1
  • OpenBSD OpenSSH 6.6
    cpe:2.3:a:openbsd:openssh:6.6
  • OpenBSD OpenSSH 6.6 Patch 1
    cpe:2.3:a:openbsd:openssh:6.6:p1
  • OpenBSD OpenSSH 6.7
    cpe:2.3:a:openbsd:openssh:6.7
  • OpenBSD OpenSSH 6.7 Patch 1
    cpe:2.3:a:openbsd:openssh:6.7:p1
  • OpenBSD OpenSSH 6.8
    cpe:2.3:a:openbsd:openssh:6.8
  • OpenBSD OpenSSH 6.8 Patch 1
    cpe:2.3:a:openbsd:openssh:6.8:p1
  • OpenBSD OpenSSH 6.9
    cpe:2.3:a:openbsd:openssh:6.9
  • OpenBSD OpenSSH 6.9 Patch 1
    cpe:2.3:a:openbsd:openssh:6.9:p1
  • OpenBSD OpenSSH 7.0
    cpe:2.3:a:openbsd:openssh:7.0
  • OpenBSD OpenSSH 7.0 Patch 1
    cpe:2.3:a:openbsd:openssh:7.0:p1
  • OpenBSD OpenSSH 7.1
    cpe:2.3:a:openbsd:openssh:7.1
  • OpenBSD OpenSSH 7.1 Patch 1
    cpe:2.3:a:openbsd:openssh:7.1:p1
  • cpe:2.3:a:hp:remote_device_access_virtual_customer_access_system:15.07
    cpe:2.3:a:hp:remote_device_access_virtual_customer_access_system:15.07
  • Apple Mac OS X 10.11.3
    cpe:2.3:o:apple:mac_os_x:10.11.3
CVSS
Base: 4.0 (as of 20-10-2016 - 11:17)
Impact:
Exploitability:
CWE CWE-200
CAPEC
  • Subverting Environment Variable Values
    The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
  • Footprinting
    An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
  • Exploiting Trust in Client (aka Make the Client Invisible)
    An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
  • Browser Fingerprinting
    An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
  • Session Credential Falsification through Prediction
    This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.
  • Reusing Session IDs (aka Session Replay)
    This attack targets the reuse of valid session ID to spoof the target system in order to gain privileges. The attacker tries to reuse a stolen session ID used previously during a transaction to perform spoofing and session hijacking. Another name for this type of attack is Session Replay.
  • Using Slashes in Alternate Encoding
    This attack targets the encoding of the Slash characters. An attacker would try to exploit common filtering problems related to the use of the slashes characters to gain access to resources on the target host. Directory-driven systems, such as file systems and databases, typically use the slash character to indicate traversal between directories or other container components. For murky historical reasons, PCs (and, as a result, Microsoft OSs) choose to use a backslash, whereas the UNIX world typically makes use of the forward slash. The schizophrenic result is that many MS-based systems are required to understand both forms of the slash. This gives the attacker many opportunities to discover and abuse a number of common filtering problems. The goal of this pattern is to discover server software that only applies filters to one version, but not the other.
Access
VectorComplexityAuthentication
NETWORK LOW SINGLE_INSTANCE
Impact
ConfidentialityIntegrityAvailability
PARTIAL NONE NONE
exploit-db via4
  • description OpenSSH 2.3 < 7.4 - Username Enumeration (PoC). Remote exploit for Linux platform
    id EDB-ID:45210
    last seen 2018-08-17
    modified 2018-08-16
    published 2018-08-16
    reporter Exploit-DB
    source https://www.exploit-db.com/download/45210/
    title OpenSSH 2.3 < 7.4 - Username Enumeration (PoC)
  • description OpenSSH < 6.6 SFTP - Command Execution. Remote exploit for Linux platform
    id EDB-ID:45001
    last seen 2018-07-10
    modified 2018-03-20
    published 2018-03-20
    reporter Exploit-DB
    source https://www.exploit-db.com/download/45001/
    title OpenSSH < 6.6 SFTP - Command Execution
  • description OpenSSH 7.2 - Denial of Service. CVE-2016-6515. Dos exploit for Linux platform
    file exploits/linux/dos/40888.py
    id EDB-ID:40888
    last seen 2016-12-07
    modified 2016-12-07
    platform linux
    port
    published 2016-12-07
    reporter Exploit-DB
    source https://www.exploit-db.com/download/40888/
    title OpenSSH 7.2 - Denial of Service
    type dos
  • description OpenSSH 6.8 < 6.9 - 'PTY' Privilege Escalation. CVE-2015-6565. Local exploit for Linux platform
    file exploits/linux/local/41173.c
    id EDB-ID:41173
    last seen 2017-01-26
    modified 2017-01-26
    platform linux
    port
    published 2017-01-26
    reporter Exploit-DB
    source https://www.exploit-db.com/download/41173/
    title OpenSSH 6.8 < 6.9 - 'PTY' Privilege Escalation
    type local
  • description OpenSSH < 7.4 - 'UsePrivilegeSeparation Disabled' Forwarded Unix Domain Sockets Privilege Escalation. CVE-2016-10010. Local exploit for Linux platform. Ta...
    file exploits/linux/local/40962.txt
    id EDB-ID:40962
    last seen 2016-12-23
    modified 2016-12-23
    platform linux
    port
    published 2016-12-23
    reporter Exploit-DB
    source https://www.exploit-db.com/download/40962/
    title OpenSSH < 7.4 - 'UsePrivilegeSeparation Disabled' Forwarded Unix Domain Sockets Privilege Escalation
    type local
  • description OpenSSH < 6.6 SFTP (x64) - Command Execution. Remote exploit for Linux_x86-64 platform
    id EDB-ID:45000
    last seen 2018-07-10
    modified 2014-10-08
    published 2014-10-08
    reporter Exploit-DB
    source https://www.exploit-db.com/download/45000/
    title OpenSSH < 6.6 SFTP (x64) - Command Execution
  • description OpenSSH < 7.4 - agent Protocol Arbitrary Library Loading. CVE-2016-10009. Remote exploit for Linux platform
    file exploits/linux/remote/40963.txt
    id EDB-ID:40963
    last seen 2016-12-23
    modified 2016-12-23
    platform linux
    port 22
    published 2016-12-23
    reporter Exploit-DB
    source https://www.exploit-db.com/download/40963/
    title OpenSSH < 7.4 - agent Protocol Arbitrary Library Loading
    type remote
  • description OpenSSH 7.7 - Username Enumeration. CVE-2018-15473. Remote exploit for Linux platform
    file exploits/linux/remote/45233.py
    id EDB-ID:45233
    last seen 2018-08-21
    modified 2018-08-21
    platform linux
    port
    published 2018-08-21
    reporter Exploit-DB
    source https://www.exploit-db.com/download/45233/
    title OpenSSH 7.7 - Username Enumeration
    type remote
nessus via4
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20160114_OPENSSH_ON_SL7_X.NASL
    description An information leak flaw was found in the way the OpenSSH client roaming feature was implemented. A malicious server could potentially use this flaw to leak portions of memory (possibly including private SSH keys) of a successfully authenticated OpenSSH client. (CVE-2016-0777) A buffer overflow flaw was found in the way the OpenSSH client roaming feature was implemented. A malicious server could potentially use this flaw to execute arbitrary code on a successfully authenticated OpenSSH client if that client used certain non-default configuration options. (CVE-2016-0778) After installing this update, the OpenSSH server daemon (sshd) will be restarted automatically.
    last seen 2018-09-02
    modified 2016-10-19
    plugin id 87938
    published 2016-01-15
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87938
    title Scientific Linux Security Update : openssh on SL7.x x86_64
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2016-38.NASL
    description This update for openssh fixes the following issues : - CVE-2016-0777: A malicious or compromised server could cause the OpenSSH client to expose part or all of the client's private key through the roaming feature (bsc#961642) - CVE-2016-0778: A malicious or compromised server could could trigger a buffer overflow in the OpenSSH client through the roaming feature (bsc#961645) This update disables the undocumented feature supported by the OpenSSH client and a commercial SSH server. This update was imported from the SUSE:SLE-12:Update update project.
    last seen 2018-09-01
    modified 2016-10-13
    plugin id 88128
    published 2016-01-25
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=88128
    title openSUSE Security Update : openssh (openSUSE-2016-38)
  • NASL family AIX Local Security Checks
    NASL id AIX_OPENSSH_ADVISORY7.NASL
    description The remote AIX host has a version of OpenSSH installed that is affected by the following vulnerabilities : - An information disclosure vulnerability exists in the resend_bytes() function in the undocumented roaming connection feature. An authenticated, remote attacker can exploit this vulnerability, by persuading a victim to connect to a malicious server, to retrieve private cryptographic keys or other sensitive information. (CVE-2016-0777) - A heap-based buffer overflow condition exists in the undocumented roaming connection feature due to improper bounds checking of user-supplied input to the packet_write_wait() and ssh_packet_write_wait() functions whenever the non-default option ProxyCommand is used with either ForwardAgent or ForwardX11. An authenticated, remote attacker can exploit this vulnerability, by persuading a victim to connect to a malicious server, to execute arbitrary code or cause a denial of service. (CVE-2016-0778)
    last seen 2018-09-01
    modified 2018-07-17
    plugin id 88590
    published 2016-02-05
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=88590
    title AIX OpenSSH Advisory : openssh_advisory7.asc
  • NASL family Slackware Local Security Checks
    NASL id SLACKWARE_SSA_2016-014-01.NASL
    description New openssh packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, and -current to fix security issues.
    last seen 2018-09-01
    modified 2016-10-19
    plugin id 87929
    published 2016-01-15
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87929
    title Slackware 13.0 / 13.1 / 13.37 / 14.0 / 14.1 / current : openssh (SSA:2016-014-01)
  • NASL family FreeBSD Local Security Checks
    NASL id FREEBSD_PKG_DFE0CDC1BAF211E5863AB499BAEBFEAF.NASL
    description OpenSSH reports : OpenSSH clients between versions 5.4 and 7.1 are vulnerable to information disclosure that may allow a malicious server to retrieve information including under some circumstances, user's private keys.
    last seen 2018-09-01
    modified 2016-10-19
    plugin id 87935
    published 2016-01-15
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87935
    title FreeBSD : openssh -- information disclosure (dfe0cdc1-baf2-11e5-863a-b499baebfeaf)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2016-0043.NASL
    description From Red Hat Security Advisory 2016:0043 : Updated openssh packages that fix two security issues are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. OpenSSH is OpenBSD's SSH (Secure Shell) protocol implementation. These packages include the core files necessary for both the OpenSSH client and server. An information leak flaw was found in the way the OpenSSH client roaming feature was implemented. A malicious server could potentially use this flaw to leak portions of memory (possibly including private SSH keys) of a successfully authenticated OpenSSH client. (CVE-2016-0777) A buffer overflow flaw was found in the way the OpenSSH client roaming feature was implemented. A malicious server could potentially use this flaw to execute arbitrary code on a successfully authenticated OpenSSH client if that client used certain non-default configuration options. (CVE-2016-0778) Red Hat would like to thank Qualys for reporting these issues. All openssh users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing this update, the OpenSSH server daemon (sshd) will be restarted automatically.
    last seen 2018-09-02
    modified 2018-07-25
    plugin id 87936
    published 2016-01-15
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87936
    title Oracle Linux 7 : openssh (ELSA-2016-0043)
  • NASL family Gentoo Local Security Checks
    NASL id GENTOO_GLSA-201601-01.NASL
    description The remote host is affected by the vulnerability described in GLSA-201601-01 (OpenSSH: Multiple vulnerabilities) Qualys have reported two issues in the “roaming” code included in the OpenSSH client, which provides undocumented, experimental support for resuming SSH connections. An OpenSSH client could be tricked into leaking parts of its memory to a malicious server. Furthermore, a buffer overflow can be exploited by a malicious server, but its exploitation requires non-default options and is mitigated due to another bug. Impact : A remote attacker could entice a user to connect to a specially crafted OpenSSH server, possibly resulting in the disclosure of the user’s private keys. Users with private keys that are not protected by a passphrase are advised to generate new keys if they have connected to an SSH server they don’t fully trust. Note that no special configuration is required to be vulnerable as the roaming feature is enabled by default on the client. Workaround : The issues can be worked around by disabling the roaming code. To do so, add “UseRoaming no” to the SSH client configuration, or specify “-o ‘UseRoaming no’” on the command line.
    last seen 2018-09-02
    modified 2016-10-10
    plugin id 87985
    published 2016-01-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87985
    title GLSA-201601-01 : OpenSSH: Multiple vulnerabilities
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2016-0118-1.NASL
    description This update for openssh fixes the following issues : - CVE-2016-0777: A malicious or compromised server could cause the OpenSSH client to expose part or all of the client's private key through the roaming feature (bsc#961642) - CVE-2016-0778: A malicious or compromised server could could trigger a buffer overflow in the OpenSSH client through the roaming feature (bsc#961645) This update disables the undocumented feature supported by the OpenSSH client and a commercial SSH server. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2018-09-01
    modified 2018-08-02
    plugin id 87961
    published 2016-01-18
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87961
    title SUSE SLED12 / SLES12 Security Update : openssh (SUSE-SU-2016:0118-1)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2016-4556904561.NASL
    description Sync with latest openssh package. 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 2018-09-01
    modified 2016-10-18
    plugin id 88464
    published 2016-01-29
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=88464
    title Fedora 23 : gsi-openssh-7.1p2-1.fc23 (2016-4556904561)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2016-67C6EF0D4F.NASL
    description Security fix for CVE-2016-0777 ---- This update provides several fixes for legacy ssh-copy-id, rpm macros and sshd-keygen 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 2018-09-01
    modified 2016-10-18
    plugin id 89559
    published 2016-03-04
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=89559
    title Fedora 23 : openssh-7.1p2-1.fc23 (2016-67c6ef0d4f)
  • NASL family Amazon Linux Local Security Checks
    NASL id ALA_ALAS-2016-638.NASL
    description An information leak flaw was found in the way the OpenSSH client roaming feature was implemented. A malicious server could potentially use this flaw to leak portions of memory (possibly including private SSH keys) of a successfully authenticated OpenSSH client. A buffer overflow flaw was found in the way the OpenSSH client roaming feature was implemented. A malicious server could potentially use this flaw to execute arbitrary code on a successfully authenticated OpenSSH client if that client used certain non-default configuration options.
    last seen 2018-09-01
    modified 2018-04-18
    plugin id 87972
    published 2016-01-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87972
    title Amazon Linux AMI : openssh (ALAS-2016-638)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2016-C330264861.NASL
    description Security fix for CVE-2016-0777 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 2018-09-01
    modified 2016-10-18
    plugin id 89610
    published 2016-03-04
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=89610
    title Fedora 22 : openssh-6.9p1-10.fc22 (2016-c330264861)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2016-0119-1.NASL
    description This update for openssh fixes the following issues : - CVE-2016-0777: A malicious or compromised server could cause the OpenSSH client to expose part or all of the client's private key through the roaming feature (bsc#961642) - CVE-2016-0778: A malicious or compromised server could could trigger a buffer overflow in the OpenSSH client through the roaming feature (bsc#961645) This update disables the undocumented feature supported by the OpenSSH client and a commercial SSH server. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2018-09-01
    modified 2018-08-02
    plugin id 87962
    published 2016-01-18
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87962
    title SUSE SLED11 / SLES11 Security Update : openssh (SUSE-SU-2016:0119-1)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2016-2E89EBA0C1.NASL
    description Sync with latest openssh package. 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 2018-09-01
    modified 2016-10-18
    plugin id 89505
    published 2016-03-04
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=89505
    title Fedora 22 : gsi-openssh-6.9p1-7.fc22 (2016-2e89eba0c1)
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DSA-3446.NASL
    description The Qualys Security team discovered two vulnerabilities in the roaming code of the OpenSSH client (an implementation of the SSH protocol suite). SSH roaming enables a client, in case an SSH connection breaks unexpectedly, to resume it at a later time, provided the server also supports it. The OpenSSH server doesn't support roaming, but the OpenSSH client supports it (even though it's not documented) and it's enabled by default. - CVE-2016-0777 An information leak (memory disclosure) can be exploited by a rogue SSH server to trick a client into leaking sensitive data from the client memory, including for example private keys. - CVE-2016-0778 A buffer overflow (leading to file descriptor leak), can also be exploited by a rogue SSH server, but due to another bug in the code is possibly not exploitable, and only under certain conditions (not the default configuration), when using ProxyCommand, ForwardAgent or ForwardX11. This security update completely disables the roaming code in the OpenSSH client. It is also possible to disable roaming by adding the (undocumented) option 'UseRoaming no' to the global /etc/ssh/ssh_config file, or to the user configuration in ~/.ssh/config, or by passing -oUseRoaming=no on the command line. Users with passphrase-less private keys, especially in non interactive setups (automated jobs using ssh, scp, rsync+ssh etc.) are advised to update their keys if they have connected to an SSH server they don't trust. More details about identifying an attack and mitigations will be available in the Qualys Security Advisory.
    last seen 2018-09-01
    modified 2018-07-11
    plugin id 87934
    published 2016-01-15
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87934
    title Debian DSA-3446-1 : openssh - security update
  • NASL family MacOS X Local Security Checks
    NASL id MACOSX_SECUPD2016-002.NASL
    description The remote host is running a version of Mac OS X that is 10.9.5 or 10.10.5 and is missing Security Update 2016-002. It is, therefore, affected by multiple vulnerabilities in the following components : - apache_mod_php - Kernel - libxml2 - OpenSSH - Python - Tcl Note that successful exploitation of the most serious issues can result in arbitrary code execution.
    last seen 2018-09-01
    modified 2018-07-14
    plugin id 90097
    published 2016-03-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90097
    title Mac OS X 10.9.5 / 10.10.5 Multiple Vulnerabilities (Security Update 2016-002)
  • NASL family Ubuntu Local Security Checks
    NASL id UBUNTU_USN-2869-1.NASL
    description It was discovered that the OpenSSH client experimental support for resuming connections contained multiple security issues. A malicious server could use this issue to leak client memory to the server, including private client user keys. 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 2018-09-02
    modified 2018-08-06
    plugin id 87939
    published 2016-01-15
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87939
    title Ubuntu 12.04 LTS / 14.04 LTS / 15.04 / 15.10 : openssh vulnerabilities (USN-2869-1)
  • NASL family MacOS X Local Security Checks
    NASL id MACOSX_10_11_4.NASL
    description The remote host is running a version of Mac OS X that is 10.11.x prior to 10.11.4. It is, therefore, affected by multiple vulnerabilities in the following components : - apache_mod_php - AppleRAID - AppleUSBNetworking - Bluetooth - Carbon - dyld - FontParser - HTTPProtocol - Intel Graphics Driver - IOFireWireFamily - IOGraphics - IOHIDFamily - IOUSBFamily - Kernel - libxml2 - Messages - NVIDIA Graphics Drivers - OpenSSH - OpenSSL - Python - QuickTime - Reminders - Ruby - Security - Tcl - TrueTypeScaler - Wi-Fi Note that successful exploitation of the most serious issues can result in arbitrary code execution.
    last seen 2018-09-01
    modified 2018-07-14
    plugin id 90096
    published 2016-03-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90096
    title Mac OS X 10.11.x < 10.11.4 Multiple Vulnerabilities
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DLA-387.NASL
    description The Qualys Security team discovered two vulnerabilities in the roaming code of the OpenSSH client (an implementation of the SSH protocol suite). SSH roaming enables a client, in case an SSH connection breaks unexpectedly, to resume it at a later time, provided the server also supports it. The OpenSSH server doesn't support roaming, but the OpenSSH client supports it (even though it's not documented) and it's enabled by default. CVE-2016-0777 An information leak (memory disclosure) can be exploited by a rogue SSH server to trick a client into leaking sensitive data from the client memory, including for example private keys. CVE-2016-0778 A buffer overflow (leading to file descriptor leak), can also be exploited by a rogue SSH server, but due to another bug in the code is possibly not exploitable, and only under certain conditions (not the default configuration), when using ProxyCommand, ForwardAgent or ForwardX11. This security update completely disables the roaming code in the OpenSSH client. It is also possible to disable roaming by adding the (undocumented) option 'UseRoaming no' to the global /etc/ssh/ssh_config file, or to the user configuration in ~/.ssh/config, or by passing -oUseRoaming=no on the command line. Users with passphrase-less privates keys, especially in non interactive setups (automated jobs using ssh, scp, rsync+ssh etc.) are advised to update their keys if they have connected to an SSH server they don't trust. More details about identifying an attack and mitigations can be found in the Qualys Security Advisory. - -- Yves-Alexis Perez NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2018-09-01
    modified 2018-07-09
    plugin id 87933
    published 2016-01-15
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87933
    title Debian DLA-387-1 : openssh security update
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2016-39.NASL
    description This update for openssh fixes the following issues : - CVE-2016-0777: A malicious or compromised server could cause the OpenSSH client to expose part or all of the client's private key through the roaming feature (bsc#961642) - CVE-2016-0778: A malicious or compromised server could could trigger a buffer overflow in the OpenSSH client through the roaming feature (bsc#961645) This update disables the undocumented feature supported by the OpenSSH client and a commercial SSH server.
    last seen 2018-09-01
    modified 2016-10-13
    plugin id 88129
    published 2016-01-25
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=88129
    title openSUSE Security Update : openssh (openSUSE-2016-39)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2016-0120-1.NASL
    description This update for openssh fixes the following issues : - CVE-2016-0777: A malicious or compromised server could cause the OpenSSH client to expose part or all of the client's private key through the roaming feature (bsc#961642) - CVE-2016-0778: A malicious or compromised server could could trigger a buffer overflow in the OpenSSH client through the roaming feature (bsc#961645) This update disables the undocumented feature supported by the OpenSSH client and a commercial SSH server. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2018-09-02
    modified 2018-08-02
    plugin id 87963
    published 2016-01-18
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87963
    title SUSE SLED11 / SLES11 Security Update : openssh (SUSE-SU-2016:0120-1)
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2016-49.NASL
    description - CVE-2016-0777: A malicious or compromised server could cause the OpenSSH client to expose part or all of the client's private key through the roaming feature (bsc#961642) - CVE-2016-0778: A malicious or compromised server could could trigger a buffer overflow in the OpenSSH client through the roaming feature (bsc#961645) This update disables the undocumented feature supported by the OpenSSH client and a commercial SSH server.
    last seen 2018-09-01
    modified 2016-10-13
    plugin id 88157
    published 2016-01-26
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=88157
    title openSUSE Security Update : openssh (openSUSE-2016-49)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2016-0043.NASL
    description Updated openssh packages that fix two security issues are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. OpenSSH is OpenBSD's SSH (Secure Shell) protocol implementation. These packages include the core files necessary for both the OpenSSH client and server. An information leak flaw was found in the way the OpenSSH client roaming feature was implemented. A malicious server could potentially use this flaw to leak portions of memory (possibly including private SSH keys) of a successfully authenticated OpenSSH client. (CVE-2016-0777) A buffer overflow flaw was found in the way the OpenSSH client roaming feature was implemented. A malicious server could potentially use this flaw to execute arbitrary code on a successfully authenticated OpenSSH client if that client used certain non-default configuration options. (CVE-2016-0778) Red Hat would like to thank Qualys for reporting these issues. All openssh users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing this update, the OpenSSH server daemon (sshd) will be restarted automatically.
    last seen 2018-10-18
    modified 2018-10-17
    plugin id 87937
    published 2016-01-15
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87937
    title RHEL 7 : openssh (RHSA-2016:0043)
  • NASL family Firewalls
    NASL id PFSENSE_SA-16_02.NASL
    description According to its self-reported version number, the remote pfSense install is prior to 2.3. It is, therefore, affected by multiple vulnerabilities.
    last seen 2018-09-19
    modified 2018-09-17
    plugin id 106499
    published 2018-01-31
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=106499
    title pfSense < 2.3 Multiple Vulnerabilities (SA-16_01 - SA-16_02)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2016-0043.NASL
    description Updated openssh packages that fix two security issues are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. OpenSSH is OpenBSD's SSH (Secure Shell) protocol implementation. These packages include the core files necessary for both the OpenSSH client and server. An information leak flaw was found in the way the OpenSSH client roaming feature was implemented. A malicious server could potentially use this flaw to leak portions of memory (possibly including private SSH keys) of a successfully authenticated OpenSSH client. (CVE-2016-0777) A buffer overflow flaw was found in the way the OpenSSH client roaming feature was implemented. A malicious server could potentially use this flaw to execute arbitrary code on a successfully authenticated OpenSSH client if that client used certain non-default configuration options. (CVE-2016-0778) Red Hat would like to thank Qualys for reporting these issues. All openssh users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing this update, the OpenSSH server daemon (sshd) will be restarted automatically.
    last seen 2018-11-11
    modified 2018-11-10
    plugin id 87930
    published 2016-01-15
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87930
    title CentOS 7 : openssh (CESA-2016:0043)
  • NASL family Misc.
    NASL id OPENSSH_71P2_ROAMING_DOS.NASL
    description According to its banner, the version of OpenSSH running on the remote host is 5.x, 6.x or 7.x prior to 7.1p2. It is, therefore, affected by multiple vulnerabilities. - A potential information disclosure vulnerability which may allow remote servers to obtain sensitive information from process memory by requesting transmission of an entire buffer (CVE-2016-0777) - A denial of service vulnerability due to a heap-base overflow in roaming_common.c (CVE-2016-07778) Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
    last seen 2018-09-01
    modified 2018-07-17
    plugin id 106608
    published 2018-02-05
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=106608
    title OpenSSH 5.4 < 7.1p2 Multiple Vulnerabilities
redhat via4
rpms
  • openssh-0:6.6.1p1-23.el7_2
  • openssh-askpass-0:6.6.1p1-23.el7_2
  • openssh-clients-0:6.6.1p1-23.el7_2
  • openssh-keycat-0:6.6.1p1-23.el7_2
  • openssh-ldap-0:6.6.1p1-23.el7_2
  • openssh-server-0:6.6.1p1-23.el7_2
  • openssh-server-sysvinit-0:6.6.1p1-23.el7_2
  • pam_ssh_agent_auth-0:0.9.3-9.23.el7_2
refmap via4
apple APPLE-SA-2016-03-21-5
bid 80695
bugtraq 20160114 Qualys Security Advisory - Roaming through the OpenSSH client: CVE-2016-0777 and CVE-2016-0778
confirm
debian DSA-3446
fedora
  • FEDORA-2016-2e89eba0c1
  • FEDORA-2016-4556904561
  • FEDORA-2016-67c6ef0d4f
  • FEDORA-2016-c330264861
freebsd FreeBSD-SA-16:07
fulldisc 20160115 Qualys Security Advisory - Roaming through the OpenSSH client: CVE-2016-0777 and CVE-2016-0778
gentoo GLSA-201601-01
misc http://packetstormsecurity.com/files/135273/Qualys-Security-Advisory-OpenSSH-Overflow-Leak.html
mlist [oss-security] 20160114 Qualys Security Advisory - Roaming through the OpenSSH client: CVE-2016-0777 and CVE-2016-0778
sectrack 1034671
suse
  • SUSE-SU-2016:0117
  • SUSE-SU-2016:0118
  • SUSE-SU-2016:0119
  • SUSE-SU-2016:0120
  • openSUSE-SU-2016:0127
  • openSUSE-SU-2016:0128
ubuntu USN-2869-1
the hacker news via4
id THN:BAEF64F9CA063BE8A102DD4466CE7A54
last seen 2018-01-27
modified 2016-01-15
published 2016-01-14
reporter Swati Khandelwal
source https://thehackernews.com/2016/01/openssh-vulnerability-cryptokeys.html
title Critical OpenSSH Flaw Leaks Private Crypto Keys to Hackers
Last major update 16-02-2017 - 21:59
Published 14-01-2016 - 17:59
Last modified 09-10-2018 - 15:58
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