ID CVE-2015-8631
Summary Multiple memory leaks in kadmin/server/server_stubs.c in kadmind in MIT Kerberos 5 (aka krb5) before 1.13.4 and 1.14.x before 1.14.1 allow remote authenticated users to cause a denial of service (memory consumption) via a request specifying a NULL principal name.
References
Vulnerable Configurations
  • MIT Kerberos 5-1.14 Alpha 1
    cpe:2.3:a:mit:kerberos:5-1.14:alpha1
  • MIT Kerberos 5-1.14 Beta 1
    cpe:2.3:a:mit:kerberos:5-1.14:beta1
  • MIT Kerberos 5 1.14 Beta2
    cpe:2.3:a:mit:kerberos:5-1.14:beta2
  • cpe:2.3:a:mit:kerberos:5-1.14
    cpe:2.3:a:mit:kerberos:5-1.14
  • MIT Kerberos 5 1.13.3
    cpe:2.3:a:mit:kerberos:5-1.13.3
CVSS
Base: 6.8 (as of 17-02-2016 - 10:29)
Impact:
Exploitability:
CWE CWE-119
CAPEC
  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
  • Overflow Binary Resource File
    An attack of this type exploits a buffer overflow vulnerability in the handling of binary resources. Binary resources may include music files like MP3, image files like JPEG files, and any other binary file. These attacks may pass unnoticed to the client machine through normal usage of files, such as a browser loading a seemingly innocent JPEG file. This can allow the attacker access to the execution stack and execute arbitrary code in the target process. This attack pattern is a variant of standard buffer overflow attacks using an unexpected vector (binary files) to wrap its attack and open up a new attack vector. The attacker is required to either directly serve the binary content to the victim, or place it in a locale like a MP3 sharing application, for the victim to download. The attacker then is notified upon the download or otherwise locates the vulnerability opened up by the buffer overflow.
  • Buffer Overflow via Symbolic Links
    This type of attack leverages the use of symbolic links to cause buffer overflows. An attacker can try to create or manipulate a symbolic link file such that its contents result in out of bounds data. When the target software processes the symbolic link file, it could potentially overflow internal buffers with insufficient bounds checking.
  • Overflow Variables and Tags
    This type of attack leverages the use of tags or variables from a formatted configuration data to cause buffer overflow. The attacker crafts a malicious HTML page or configuration file that includes oversized strings, thus causing an overflow.
  • Buffer Overflow via Parameter Expansion
    In this attack, the target software is given input that the attacker knows will be modified and expanded in size during processing. This attack relies on the target software failing to anticipate that the expanded data may exceed some internal limit, thereby creating a buffer overflow.
  • Buffer Overflow in an API Call
    This attack targets libraries or shared code modules which are vulnerable to buffer overflow attacks. An attacker who has access to an API may try to embed malicious code in the API function call and exploit a buffer overflow vulnerability in the function's implementation. All clients that make use of the code library thus become vulnerable by association. This has a very broad effect on security across a system, usually affecting more than one software process.
  • Buffer Overflow in Local Command-Line Utilities
    This attack targets command-line utilities available in a number of shells. An attacker can leverage a vulnerability found in a command-line utility to escalate privilege to root.
Access
VectorComplexityAuthentication
NETWORK LOW SINGLE_INSTANCE
Impact
ConfidentialityIntegrityAvailability
NONE NONE COMPLETE
nessus via4
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2016-0493.NASL
    description From Red Hat Security Advisory 2016:0493 : Updated krb5 packages that fix two security issues are now available for Red Hat Enterprise Linux 6. 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. Kerberos is a networked authentication system which allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos KDC. A memory leak flaw was found in the krb5_unparse_name() function of the MIT Kerberos kadmind service. An authenticated attacker could repeatedly send specially crafted requests to the server, which could cause the server to consume large amounts of memory resources, ultimately leading to a denial of service due to memory exhaustion. (CVE-2015-8631) An out-of-bounds read flaw was found in the kadmind service of MIT Kerberos. An authenticated attacker could send a maliciously crafted message to force kadmind to read beyond the end of allocated memory, and write the memory contents to the KDC database if the attacker has write permission, leading to information disclosure. (CVE-2015-8629) The CVE-2015-8631 issue was discovered by Simo Sorce of Red Hat. All krb5 users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, running Kerberos services (krb5kdc, kadmin, and kprop) will be restarted automatically.
    last seen 2019-02-21
    modified 2018-07-24
    plugin id 90112
    published 2016-03-23
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90112
    title Oracle Linux 6 : krb5 (ELSA-2016-0493)
  • NASL family Amazon Linux Local Security Checks
    NASL id ALA_ALAS-2016-691.NASL
    description An out-of-bounds read flaw was found in the kadmind service of MIT Kerberos. An authenticated attacker could send a maliciously crafted message to force kadmind to read beyond the end of allocated memory, and write the memory contents to the KDC database if the attacker has write permission, leading to information disclosure. (CVE-2015-8629) A NULL pointer dereference flaw was found in the procedure used by the MIT Kerberos kadmind service to store policies: the kadm5_create_principal_3() and kadm5_modify_principal() function did not ensure that a policy was given when KADM5_POLICY was set. An authenticated attacker with permissions to modify the database could use this flaw to add or modify a principal with a policy set to NULL, causing the kadmind service to crash. (CVE-2015-8630) A memory leak flaw was found in the krb5_unparse_name() function of the MIT Kerberos kadmind service. An authenticated attacker could repeatedly send specially crafted requests to the server, which could cause the server to consume large amounts of memory resources, ultimately leading to a denial of service due to memory exhaustion. (CVE-2015-8631)
    last seen 2019-02-21
    modified 2018-04-18
    plugin id 90633
    published 2016-04-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90633
    title Amazon Linux AMI : krb5 (ALAS-2016-691)
  • NASL family PhotonOS Local Security Checks
    NASL id PHOTONOS_PHSA-2017-0011_KRB5.NASL
    description An update of the krb5 package has been released.
    last seen 2019-02-08
    modified 2019-02-07
    plugin id 121679
    published 2019-02-07
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=121679
    title Photon OS 1.0: Krb5 PHSA-2017-0011
  • NASL family OracleVM Local Security Checks
    NASL id ORACLEVM_OVMSA-2016-0039.NASL
    description The remote OracleVM system is missing necessary patches to address critical security updates : - Fix (CVE-2015-8629, CVE-2015-8631) - Also fix a spec trigger issue that prevents building - Resolves: #1306973
    last seen 2019-02-21
    modified 2018-07-24
    plugin id 90138
    published 2016-03-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90138
    title OracleVM 3.3 / 3.4 : krb5 (OVMSA-2016-0039)
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20160323_KRB5_ON_SL6_X.NASL
    description A memory leak flaw was found in the krb5_unparse_name() function of the MIT Kerberos kadmind service. An authenticated attacker could repeatedly send specially crafted requests to the server, which could cause the server to consume large amounts of memory resources, ultimately leading to a denial of service due to memory exhaustion. (CVE-2015-8631) An out-of-bounds read flaw was found in the kadmind service of MIT Kerberos. An authenticated attacker could send a maliciously crafted message to force kadmind to read beyond the end of allocated memory, and write the memory contents to the KDC database if the attacker has write permission, leading to information disclosure. (CVE-2015-8629) After installing the updated packages, running Kerberos services (krb5kdc, kadmin, and kprop) will be restarted automatically.
    last seen 2019-02-21
    modified 2018-12-28
    plugin id 90145
    published 2016-03-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90145
    title Scientific Linux Security Update : krb5 on SL6.x i386/x86_64
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2016-0429-1.NASL
    description This update for krb5 fixes the following issues : - CVE-2015-8629: Information leak authenticated attackers with permissions to modify the database (bsc#963968) - CVE-2015-8630: An authenticated attacker with permission to modify a principal entry may have caused kadmind to crash (bsc#963964) - CVE-2015-8631: An authenticated attacker could have caused a memory leak in auditd by supplying a null principal name in request (bsc#963975) 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 2019-02-21
    modified 2018-11-29
    plugin id 88707
    published 2016-02-12
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=88707
    title SUSE SLED12 / SLES12 Security Update : krb5 (SUSE-SU-2016:0429-1)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2016-0493.NASL
    description Updated krb5 packages that fix two security issues are now available for Red Hat Enterprise Linux 6. 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. Kerberos is a networked authentication system which allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos KDC. A memory leak flaw was found in the krb5_unparse_name() function of the MIT Kerberos kadmind service. An authenticated attacker could repeatedly send specially crafted requests to the server, which could cause the server to consume large amounts of memory resources, ultimately leading to a denial of service due to memory exhaustion. (CVE-2015-8631) An out-of-bounds read flaw was found in the kadmind service of MIT Kerberos. An authenticated attacker could send a maliciously crafted message to force kadmind to read beyond the end of allocated memory, and write the memory contents to the KDC database if the attacker has write permission, leading to information disclosure. (CVE-2015-8629) The CVE-2015-8631 issue was discovered by Simo Sorce of Red Hat. All krb5 users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, running Kerberos services (krb5kdc, kadmin, and kprop) will be restarted automatically.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 90122
    published 2016-03-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90122
    title CentOS 6 : krb5 (CESA-2016:0493)
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2016-181.NASL
    description This update for krb5 fixes the following issues : - CVE-2015-8629: Information leak authenticated attackers with permissions to modify the database (bsc#963968) - CVE-2015-8630: An authenticated attacker with permission to modify a principal entry may have caused kadmind to crash (bsc#963964) - CVE-2015-8631: An authenticated attacker could have caused a memory leak in auditd by supplying a null principal name in request (bsc#963975)
    last seen 2019-02-21
    modified 2016-10-13
    plugin id 88687
    published 2016-02-11
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=88687
    title openSUSE Security Update : krb5 (openSUSE-2016-181)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2016-0532.NASL
    description From Red Hat Security Advisory 2016:0532 : An update for krb5 is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. 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. Kerberos is a network authentication system, which can improve the security of your network by eliminating the insecure practice of sending passwords over the network in unencrypted form. It allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos key distribution center (KDC). Security Fix(es) : * A memory leak flaw was found in the krb5_unparse_name() function of the MIT Kerberos kadmind service. An authenticated attacker could repeatedly send specially crafted requests to the server, which could cause the server to consume large amounts of memory resources, ultimately leading to a denial of service due to memory exhaustion. (CVE-2015-8631) * An out-of-bounds read flaw was found in the kadmind service of MIT Kerberos. An authenticated attacker could send a maliciously crafted message to force kadmind to read beyond the end of allocated memory, and write the memory contents to the KDC database if the attacker has write permission, leading to information disclosure. (CVE-2015-8629) * A NULL pointer dereference flaw was found in the procedure used by the MIT Kerberos kadmind service to store policies: the kadm5_create_principal_3() and kadm5_modify_principal() function did not ensure that a policy was given when KADM5_POLICY was set. An authenticated attacker with permissions to modify the database could use this flaw to add or modify a principal with a policy set to NULL, causing the kadmind service to crash. (CVE-2015-8630) The CVE-2015-8631 issue was discovered by Simo Sorce of Red Hat.
    last seen 2019-02-21
    modified 2018-07-24
    plugin id 90295
    published 2016-04-01
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90295
    title Oracle Linux 7 : krb5 (ELSA-2016-0532)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2016-0430-1.NASL
    description This update for krb5 fixes the following issues : - CVE-2015-8629: Information leak authenticated attackers with permissions to modify the database (bsc#963968) - CVE-2015-8631: An authenticated attacker could have caused a memory leak in auditd by supplying a null principal name in request (bsc#963975) 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 2019-02-21
    modified 2018-11-29
    plugin id 88708
    published 2016-02-12
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=88708
    title SUSE SLED11 / SLES11 Security Update : krb5 (SUSE-SU-2016:0430-1)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2016-0493.NASL
    description Updated krb5 packages that fix two security issues are now available for Red Hat Enterprise Linux 6. 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. Kerberos is a networked authentication system which allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos KDC. A memory leak flaw was found in the krb5_unparse_name() function of the MIT Kerberos kadmind service. An authenticated attacker could repeatedly send specially crafted requests to the server, which could cause the server to consume large amounts of memory resources, ultimately leading to a denial of service due to memory exhaustion. (CVE-2015-8631) An out-of-bounds read flaw was found in the kadmind service of MIT Kerberos. An authenticated attacker could send a maliciously crafted message to force kadmind to read beyond the end of allocated memory, and write the memory contents to the KDC database if the attacker has write permission, leading to information disclosure. (CVE-2015-8629) The CVE-2015-8631 issue was discovered by Simo Sorce of Red Hat. All krb5 users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, running Kerberos services (krb5kdc, kadmin, and kprop) will be restarted automatically.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 90116
    published 2016-03-23
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90116
    title RHEL 6 : krb5 (RHSA-2016:0493)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2016-0532.NASL
    description An update for krb5 is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. 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. Kerberos is a network authentication system, which can improve the security of your network by eliminating the insecure practice of sending passwords over the network in unencrypted form. It allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos key distribution center (KDC). Security Fix(es) : * A memory leak flaw was found in the krb5_unparse_name() function of the MIT Kerberos kadmind service. An authenticated attacker could repeatedly send specially crafted requests to the server, which could cause the server to consume large amounts of memory resources, ultimately leading to a denial of service due to memory exhaustion. (CVE-2015-8631) * An out-of-bounds read flaw was found in the kadmind service of MIT Kerberos. An authenticated attacker could send a maliciously crafted message to force kadmind to read beyond the end of allocated memory, and write the memory contents to the KDC database if the attacker has write permission, leading to information disclosure. (CVE-2015-8629) * A NULL pointer dereference flaw was found in the procedure used by the MIT Kerberos kadmind service to store policies: the kadm5_create_principal_3() and kadm5_modify_principal() function did not ensure that a policy was given when KADM5_POLICY was set. An authenticated attacker with permissions to modify the database could use this flaw to add or modify a principal with a policy set to NULL, causing the kadmind service to crash. (CVE-2015-8630) The CVE-2015-8631 issue was discovered by Simo Sorce of Red Hat.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 90299
    published 2016-04-01
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90299
    title RHEL 7 : krb5 (RHSA-2016:0532)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2016-0532.NASL
    description An update for krb5 is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. 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. Kerberos is a network authentication system, which can improve the security of your network by eliminating the insecure practice of sending passwords over the network in unencrypted form. It allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos key distribution center (KDC). Security Fix(es) : * A memory leak flaw was found in the krb5_unparse_name() function of the MIT Kerberos kadmind service. An authenticated attacker could repeatedly send specially crafted requests to the server, which could cause the server to consume large amounts of memory resources, ultimately leading to a denial of service due to memory exhaustion. (CVE-2015-8631) * An out-of-bounds read flaw was found in the kadmind service of MIT Kerberos. An authenticated attacker could send a maliciously crafted message to force kadmind to read beyond the end of allocated memory, and write the memory contents to the KDC database if the attacker has write permission, leading to information disclosure. (CVE-2015-8629) * A NULL pointer dereference flaw was found in the procedure used by the MIT Kerberos kadmind service to store policies: the kadm5_create_principal_3() and kadm5_modify_principal() function did not ensure that a policy was given when KADM5_POLICY was set. An authenticated attacker with permissions to modify the database could use this flaw to add or modify a principal with a policy set to NULL, causing the kadmind service to crash. (CVE-2015-8630) The CVE-2015-8631 issue was discovered by Simo Sorce of Red Hat.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 90275
    published 2016-04-01
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90275
    title CentOS 7 : krb5 (CESA-2016:0532)
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2016-230.NASL
    description This update for krb5 fixes the following issues : - CVE-2015-8629: Information leak authenticated attackers with permissions to modify the database (bsc#963968) - CVE-2015-8630: An authenticated attacker with permission to modify a principal entry may have caused kadmind to crash (bsc#963964) - CVE-2015-8631: An authenticated attacker could have caused a memory leak in auditd by supplying a null principal name in request (bsc#963975) This update was imported from the SUSE:SLE-12:Update update project.
    last seen 2019-02-21
    modified 2016-10-13
    plugin id 88854
    published 2016-02-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=88854
    title openSUSE Security Update : krb5 (openSUSE-2016-230)
  • NASL family Huawei Local Security Checks
    NASL id EULEROS_SA-2016-1012.NASL
    description According to the versions of the krb5 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A memory leak flaw was found in the krb5_unparse_name() function of the MIT Kerberos kadmind service. An authenticated attacker could repeatedly send specially crafted requests to the server, which could cause the server to consume large amounts of memory resources, ultimately leading to a denial of service due to memory exhaustion.(CVE-2015-8631) - An out-of-bounds read flaw was found in the kadmind service of MIT Kerberos. An authenticated attacker could send a maliciously crafted message to force kadmind to read beyond the end of allocated memory, and write the memory contents to the KDC database if the attacker has write permission, leading to information disclosure. (CVE-2015-8629) - A NULL pointer dereference flaw was found in the procedure used by the MIT Kerberos kadmind service to store policies: the kadm5_create_principal_3() and kadm5_modify_principal() function did not ensure that a policy was given when KADM5_POLICY was set. An authenticated attacker with permissions to modify the database could use this flaw to add or modify a principal with a policy set to NULL, causing the kadmind service to crash. (CVE-2015-8630) 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 99775
    published 2017-05-01
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=99775
    title EulerOS 2.0 SP1 : krb5 (EulerOS-SA-2016-1012)
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DLA-423.NASL
    description CVE-2015-8629 It was discovered that an authenticated attacker can cause kadmind to read beyond the end of allocated memory by sending a string without a terminating zero byte. Information leakage may be possible for an attacker with permission to modify the database. CVE-2015-8631 It was discovered that an authenticated attacker can cause kadmind to leak memory by supplying a null principal name in a request which uses one. Repeating these requests will eventually cause kadmind to exhaust all available memory. 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 2019-02-21
    modified 2018-07-06
    plugin id 88886
    published 2016-02-23
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=88886
    title Debian DLA-423-1 : krb5 security update
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20160404_KRB5_ON_SL7_X.NASL
    description Security Fix(es) : - A memory leak flaw was found in the krb5_unparse_name() function of the MIT Kerberos kadmind service. An authenticated attacker could repeatedly send specially crafted requests to the server, which could cause the server to consume large amounts of memory resources, ultimately leading to a denial of service due to memory exhaustion. (CVE-2015-8631) - An out-of-bounds read flaw was found in the kadmind service of MIT Kerberos. An authenticated attacker could send a maliciously crafted message to force kadmind to read beyond the end of allocated memory, and write the memory contents to the KDC database if the attacker has write permission, leading to information disclosure. (CVE-2015-8629) - A NULL pointer dereference flaw was found in the procedure used by the MIT Kerberos kadmind service to store policies: the kadm5_create_principal_3() and kadm5_modify_principal() function did not ensure that a policy was given when KADM5_POLICY was set. An authenticated attacker with permissions to modify the database could use this flaw to add or modify a principal with a policy set to NULL, causing the kadmind service to crash. (CVE-2015-8630)
    last seen 2019-02-21
    modified 2018-12-28
    plugin id 90344
    published 2016-04-05
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=90344
    title Scientific Linux Security Update : krb5 on SL7.x x86_64
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DSA-3466.NASL
    description Several vulnerabilities were discovered in krb5, the MIT implementation of Kerberos. The Common Vulnerabilities and Exposures project identifies the following problems : - CVE-2015-8629 It was discovered that an authenticated attacker can cause kadmind to read beyond the end of allocated memory by sending a string without a terminating zero byte. Information leakage may be possible for an attacker with permission to modify the database. - CVE-2015-8630 It was discovered that an authenticated attacker with permission to modify a principal entry can cause kadmind to dereference a null pointer by supplying a null policy value but including KADM5_POLICY in the mask. - CVE-2015-8631 It was discovered that an authenticated attacker can cause kadmind to leak memory by supplying a null principal name in a request which uses one. Repeating these requests will eventually cause kadmind to exhaust all available memory.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 88581
    published 2016-02-05
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=88581
    title Debian DSA-3466-1 : krb5 - security update
  • NASL family PhotonOS Local Security Checks
    NASL id PHOTONOS_PHSA-2017-0011.NASL
    description An update of [krb5,linux] packages for PhotonOS has been released.
    last seen 2019-02-08
    modified 2019-02-07
    plugin id 111860
    published 2018-08-17
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=111860
    title Photon OS 1.0: Krb5 / Linux PHSA-2017-0011 (deprecated)
redhat via4
advisories
  • bugzilla
    id 1302642
    title CVE-2015-8631 krb5: Memory leak caused by supplying a null principal name in request
    oval
    AND
    • OR
      • comment Red Hat Enterprise Linux 6 Client is installed
        oval oval:com.redhat.rhba:tst:20111656001
      • comment Red Hat Enterprise Linux 6 Server is installed
        oval oval:com.redhat.rhba:tst:20111656002
      • comment Red Hat Enterprise Linux 6 Workstation is installed
        oval oval:com.redhat.rhba:tst:20111656003
      • comment Red Hat Enterprise Linux 6 ComputeNode is installed
        oval oval:com.redhat.rhba:tst:20111656004
    • OR
      • AND
        • comment krb5-devel is earlier than 0:1.10.3-42z1.el6_7
          oval oval:com.redhat.rhsa:tst:20160493013
        • comment krb5-devel is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100863012
      • AND
        • comment krb5-libs is earlier than 0:1.10.3-42z1.el6_7
          oval oval:com.redhat.rhsa:tst:20160493005
        • comment krb5-libs is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100863016
      • AND
        • comment krb5-pkinit-openssl is earlier than 0:1.10.3-42z1.el6_7
          oval oval:com.redhat.rhsa:tst:20160493011
        • comment krb5-pkinit-openssl is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100863008
      • AND
        • comment krb5-server is earlier than 0:1.10.3-42z1.el6_7
          oval oval:com.redhat.rhsa:tst:20160493015
        • comment krb5-server is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100863010
      • AND
        • comment krb5-server-ldap is earlier than 0:1.10.3-42z1.el6_7
          oval oval:com.redhat.rhsa:tst:20160493007
        • comment krb5-server-ldap is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100863006
      • AND
        • comment krb5-workstation is earlier than 0:1.10.3-42z1.el6_7
          oval oval:com.redhat.rhsa:tst:20160493009
        • comment krb5-workstation is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100863014
    rhsa
    id RHSA-2016:0493
    released 2016-03-22
    severity Moderate
    title RHSA-2016:0493: krb5 security update (Moderate)
  • bugzilla
    id 1302642
    title CVE-2015-8631 krb5: Memory leak caused by supplying a null principal name in request
    oval
    AND
    • OR
      • comment Red Hat Enterprise Linux 7 Client is installed
        oval oval:com.redhat.rhba:tst:20150364001
      • comment Red Hat Enterprise Linux 7 Server is installed
        oval oval:com.redhat.rhba:tst:20150364002
      • comment Red Hat Enterprise Linux 7 Workstation is installed
        oval oval:com.redhat.rhba:tst:20150364003
      • comment Red Hat Enterprise Linux 7 ComputeNode is installed
        oval oval:com.redhat.rhba:tst:20150364004
    • OR
      • AND
        • comment krb5-devel is earlier than 0:1.13.2-12.el7_2
          oval oval:com.redhat.rhsa:tst:20160532009
        • comment krb5-devel is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100863012
      • AND
        • comment krb5-libs is earlier than 0:1.13.2-12.el7_2
          oval oval:com.redhat.rhsa:tst:20160532005
        • comment krb5-libs is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100863016
      • AND
        • comment krb5-pkinit is earlier than 0:1.13.2-12.el7_2
          oval oval:com.redhat.rhsa:tst:20160532007
        • comment krb5-pkinit is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20150439006
      • AND
        • comment krb5-server is earlier than 0:1.13.2-12.el7_2
          oval oval:com.redhat.rhsa:tst:20160532013
        • comment krb5-server is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100863010
      • AND
        • comment krb5-server-ldap is earlier than 0:1.13.2-12.el7_2
          oval oval:com.redhat.rhsa:tst:20160532015
        • comment krb5-server-ldap is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100863006
      • AND
        • comment krb5-workstation is earlier than 0:1.13.2-12.el7_2
          oval oval:com.redhat.rhsa:tst:20160532011
        • comment krb5-workstation is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100863014
    rhsa
    id RHSA-2016:0532
    released 2016-03-31
    severity Moderate
    title RHSA-2016:0532: krb5 security update (Moderate)
rpms
  • krb5-devel-0:1.10.3-42z1.el6_7
  • krb5-libs-0:1.10.3-42z1.el6_7
  • krb5-pkinit-openssl-0:1.10.3-42z1.el6_7
  • krb5-server-0:1.10.3-42z1.el6_7
  • krb5-server-ldap-0:1.10.3-42z1.el6_7
  • krb5-workstation-0:1.10.3-42z1.el6_7
  • krb5-devel-0:1.13.2-12.el7_2
  • krb5-libs-0:1.13.2-12.el7_2
  • krb5-pkinit-0:1.13.2-12.el7_2
  • krb5-server-0:1.13.2-12.el7_2
  • krb5-server-ldap-0:1.13.2-12.el7_2
  • krb5-workstation-0:1.13.2-12.el7_2
refmap via4
confirm
debian DSA-3466
sectrack 1034916
suse
  • openSUSE-SU-2016:0406
  • openSUSE-SU-2016:0501
Last major update 05-12-2016 - 22:04
Published 12-02-2016 - 21:59
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