ID CVE-2007-5971
Summary Double free vulnerability in the gss_krb5int_make_seal_token_v3 function in lib/gssapi/krb5/k5sealv3.c in MIT Kerberos 5 (krb5) has unknown impact and attack vectors.
References
Vulnerable Configurations
  • Apple Mac OS X 10.4.11
    cpe:2.3:o:apple:mac_os_x:10.4.11
  • Apple Mac OS X 10.5.2
    cpe:2.3:o:apple:mac_os_x:10.5.2
  • Apple Mac OS X Server 10.4.11
    cpe:2.3:o:apple:mac_os_x_server:10.4.11
  • Apple Mac OS X Server 10.5.2
    cpe:2.3:o:apple:mac_os_x_server:10.5.2
  • cpe:2.3:a:mit:kerberos_5:1.6.3_kdc
    cpe:2.3:a:mit:kerberos_5:1.6.3_kdc
CVSS
Base: 6.9 (as of 06-12-2007 - 11:58)
Impact:
Exploitability:
CWE CWE-399
CAPEC
Access
VectorComplexityAuthentication
LOCAL MEDIUM NONE
Impact
ConfidentialityIntegrityAvailability
COMPLETE COMPLETE COMPLETE
nessus via4
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20080318_KRB5_ON_SL3_X.NASL
    description A flaw was found in the way the MIT Kerberos Authentication Service and Key Distribution Center server (krb5kdc) handled Kerberos v4 protocol packets. An unauthenticated remote attacker could use this flaw to crash the krb5kdc daemon, disclose portions of its memory, or possibly execute arbitrary code using malformed or truncated Kerberos v4 protocol requests. (CVE-2008-0062, CVE-2008-0063) This issue only affected krb5kdc with Kerberos v4 protocol compatibility enabled, which is the default setting on Scientific Linux 4. Kerberos v4 protocol support can be disabled by adding 'v4_mode=none' (without the quotes) to the '[kdcdefaults]' section of /var/kerberos/krb5kdc/kdc.conf. SL 3x only: A flaw was found in the RPC library used by the MIT Kerberos kadmind server. An unauthenticated remote attacker could use this flaw to crash kadmind. This issue only affected systems with certain resource limits configured and did not affect systems using default resource limits used by Scientific Linux 3. (CVE-2008-0948) SL 4x and 5x only: Multiple memory management flaws were discovered in the GSSAPI library used by MIT Kerberos. These flaws could possibly result in use of already freed memory or an attempt to free already freed memory blocks (double-free flaw), possibly causing a crash or arbitrary code execution. (CVE-2007-5901, CVE-2007-5971) SL 5x only: Jeff Altman of Secure Endpoints discovered a flaw in the RPC library as used by MIT Kerberos kadmind server. An unauthenticated remote attacker could use this flaw to crash kadmind or possibly execute arbitrary code. This issue only affected systems with certain resource limits configured and did not affect systems using default resource limits used by Red Hat Enterprise Linux 5. (CVE-2008-0947)
    last seen 2019-02-21
    modified 2019-01-07
    plugin id 60373
    published 2012-08-01
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=60373
    title Scientific Linux Security Update : krb5 on SL3.x, SL4.x, SL5.x i386/x86_64
  • NASL family Ubuntu Local Security Checks
    NASL id UBUNTU_USN-940-1.NASL
    description It was discovered that Kerberos did not correctly free memory in the GSSAPI and kdb libraries. If a remote attacker were able to manipulate an application using these libraries carefully, the service could crash, leading to a denial of service. (Only Ubuntu 6.06 LTS was affected.) (CVE-2007-5902, CVE-2007-5971, CVE-2007-5972) Joel Johnson, Brian Almeida, and Shawn Emery discovered that Kerberos did not correctly verify certain packet structures. An unauthenticated remote attacker could send specially crafted traffic to cause the KDC or kadmind services to crash, leading to a denial of service. (CVE-2010-1320, CVE-2010-1321). 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 2018-11-28
    plugin id 46688
    published 2010-05-20
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=46688
    title Ubuntu 6.06 LTS / 8.04 LTS / 9.04 / 9.10 : krb5 vulnerabilities (USN-940-1)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_KRB5-4852.NASL
    description This update fixes multiple vulnerabilties in krb5. It's unlikely that those vulnerabilties can actually be exploited. (CVE-2007-5894 / CVE-2007-5902 / CVE-2007-5971 / CVE-2007-5972)
    last seen 2019-02-21
    modified 2016-12-22
    plugin id 29992
    published 2008-01-16
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=29992
    title SuSE 10 Security Update : Kerberos (ZYPP Patch Number 4852)
  • NASL family Ubuntu Local Security Checks
    NASL id UBUNTU_USN-924-1.NASL
    description Sol Jerome discovered that the Kerberos kadmind service did not correctly free memory. An unauthenticated remote attacker could send specially crafted traffic to crash the kadmind process, leading to a denial of service. (CVE-2010-0629) It was discovered that Kerberos did not correctly free memory in the GSSAPI library. If a remote attacker were able to manipulate an application using GSSAPI carefully, the service could crash, leading to a denial of service. (Ubuntu 8.10 was not affected.) (CVE-2007-5901, CVE-2007-5971) It was discovered that Kerberos did not correctly free memory in the GSSAPI and kdb libraries. If a remote attacker were able to manipulate an application using these libraries carefully, the service could crash, leading to a denial of service. (Only Ubuntu 8.04 LTS was affected.) (CVE-2007-5902, CVE-2007-5972). 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 2018-11-28
    plugin id 65123
    published 2013-03-09
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=65123
    title Ubuntu 8.04 LTS / 8.10 / 9.04 : krb5 vulnerabilities (USN-924-1)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_KRB5-4851.NASL
    description This update fixes multiple vulnerabilties in krb5. It's unlikely that those vulnerabilties can actually be exploited. (CVE-2007-5894, CVE-2007-5902, CVE-2007-5971, CVE-2007-5972)
    last seen 2019-02-21
    modified 2016-12-22
    plugin id 29991
    published 2008-01-16
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=29991
    title openSUSE 10 Security Update : krb5 (krb5-4851)
  • NASL family Mandriva Local Security Checks
    NASL id MANDRIVA_MDVSA-2008-069.NASL
    description Multiple memory management flaws were found in the GSSAPI library used by Kerberos that could result in the use of already freed memory or an attempt to free already freed memory, possibly leading to a crash or allowing the execution of arbitrary code (CVE-2007-5901, CVE-2007-5971). A flaw was discovered in how the Kerberos krb5kdc handled Kerberos v4 protocol packets. An unauthenticated remote attacker could use this flaw to crash the krb5kdc daemon, disclose portions of its memory, or possibly %execute arbitrary code using malformed or truncated Kerberos v4 protocol requests (CVE-2008-0062, CVE-2008-0063). This issue only affects krb5kdc when it has Kerberos v4 protocol compatibility enabled, which is a compiled-in default in all Kerberos versions that Mandriva Linux ships prior to Mandriva Linux 2008.0. Kerberos v4 protocol support can be disabled by adding v4_mode=none (without quotes) to the [kdcdefaults] section of /etc/kerberos/krb5kdc/kdc.conf. A flaw in the RPC library as used in Kerberos' kadmind was discovered by Jeff Altman of Secure Endpoints. An unauthenticated remote attacker could use this vulnerability to crash kadmind or possibly execute arbitrary code in systems with certain resource limits configured; this does not affect the default resource limits used by Mandriva Linux (CVE-2008-0947). The updated packages have been patched to correct these issues.
    last seen 2019-02-21
    modified 2018-07-19
    plugin id 38056
    published 2009-04-23
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=38056
    title Mandriva Linux Security Advisory : krb5 (MDVSA-2008:069)
  • NASL family Gentoo Local Security Checks
    NASL id GENTOO_GLSA-200803-31.NASL
    description The remote host is affected by the vulnerability described in GLSA-200803-31 (MIT Kerberos 5: Multiple vulnerabilities) Two vulnerabilities were found in the Kerberos 4 support in KDC: A global variable is not set for some incoming message types, leading to a NULL pointer dereference or a double free() (CVE-2008-0062) and unused portions of a buffer are not properly cleared when generating an error message, which results in stack content being contained in a reply (CVE-2008-0063). Jeff Altman (Secure Endpoints) discovered a buffer overflow in the RPC library server code, used in the kadmin server, caused when too many file descriptors are opened (CVE-2008-0947). Venustech AD-LAB discovered multiple vulnerabilities in the GSSAPI library: usage of a freed variable in the gss_indicate_mechs() function (CVE-2007-5901) and a double free() vulnerability in the gss_krb5int_make_seal_token_v3() function (CVE-2007-5971). Impact : The first two vulnerabilities can be exploited by a remote unauthenticated attacker to execute arbitrary code on the host running krb5kdc, compromise the Kerberos key database or cause a Denial of Service. These bugs can only be triggered when Kerberos 4 support is enabled. The RPC related vulnerability can be exploited by a remote unauthenticated attacker to crash kadmind, and theoretically execute arbitrary code with root privileges or cause database corruption. This bug can only be triggered in configurations that allow large numbers of open file descriptors in a process. The GSSAPI vulnerabilities could be exploited by a remote attacker to cause Denial of Service conditions or possibly execute arbitrary code. Workaround : Kerberos 4 support can be disabled via disabling the 'krb4' USE flag and recompiling the ebuild, or setting 'v4_mode=none' in the [kdcdefaults] section of /etc/krb5/kdc.conf. This will only work around the KDC related vulnerabilities.
    last seen 2019-02-21
    modified 2018-08-10
    plugin id 31671
    published 2008-03-26
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=31671
    title GLSA-200803-31 : MIT Kerberos 5: Multiple vulnerabilities
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2008-0180.NASL
    description Updated krb5 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 4. This update has been rated as having critical security impact by the Red Hat Security Response Team. Kerberos is a network authentication system which allows clients and servers to authenticate to each other through use of symmetric encryption and a trusted third party, the KDC. A flaw was found in the way the MIT Kerberos Authentication Service and Key Distribution Center server (krb5kdc) handled Kerberos v4 protocol packets. An unauthenticated remote attacker could use this flaw to crash the krb5kdc daemon, disclose portions of its memory, or possibly execute arbitrary code using malformed or truncated Kerberos v4 protocol requests. (CVE-2008-0062, CVE-2008-0063) This issue only affected krb5kdc with Kerberos v4 protocol compatibility enabled, which is the default setting on Red Hat Enterprise Linux 4. Kerberos v4 protocol support can be disabled by adding 'v4_mode=none' (without the quotes) to the '[kdcdefaults]' section of /var/kerberos/krb5kdc/kdc.conf. Red Hat would like to thank MIT for reporting these issues. A double-free flaw was discovered in the GSSAPI library used by MIT Kerberos. This flaw could possibly cause a crash of the application using the GSSAPI library. (CVE-2007-5971) All krb5 users are advised to update to these erratum packages which contain backported fixes to correct these issues.
    last seen 2019-02-21
    modified 2018-11-27
    plugin id 31617
    published 2008-03-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=31617
    title RHEL 4 : krb5 (RHSA-2008:0180)
  • NASL family MacOS X Local Security Checks
    NASL id MACOSX_SECUPD2008-002.NASL
    description The remote host is running a version of Mac OS X 10.5 or 10.4 that does not have the security update 2008-002 applied. This update contains several security fixes for a number of programs.
    last seen 2019-02-21
    modified 2018-07-14
    plugin id 31605
    published 2008-03-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=31605
    title Mac OS X Multiple Vulnerabilities (Security Update 2008-002)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2008-0164.NASL
    description Updated krb5 packages that resolve several issues and fix multiple bugs are now available for Red Hat Enterprise Linux 5. This update has been rated as having critical security impact by the Red Hat Security Response Team. Kerberos is a network authentication system which allows clients and servers to authenticate to each other through use of symmetric encryption and a trusted third party, the KDC. A flaw was found in the way the MIT Kerberos Authentication Service and Key Distribution Center server (krb5kdc) handled Kerberos v4 protocol packets. An unauthenticated remote attacker could use this flaw to crash the krb5kdc daemon, disclose portions of its memory, or possibly execute arbitrary code using malformed or truncated Kerberos v4 protocol requests. (CVE-2008-0062, CVE-2008-0063) This issue only affected krb5kdc with Kerberos v4 protocol compatibility enabled, which is the default setting on Red Hat Enterprise Linux 4. Kerberos v4 protocol support can be disabled by adding 'v4_mode=none' (without the quotes) to the '[kdcdefaults]' section of /var/kerberos/krb5kdc/kdc.conf. Jeff Altman of Secure Endpoints discovered a flaw in the RPC library as used by MIT Kerberos kadmind server. An unauthenticated remote attacker could use this flaw to crash kadmind or possibly execute arbitrary code. This issue only affected systems with certain resource limits configured and did not affect systems using default resource limits used by Red Hat Enterprise Linux 5. (CVE-2008-0947) Red Hat would like to thank MIT for reporting these issues. Multiple memory management flaws were discovered in the GSSAPI library used by MIT Kerberos. These flaws could possibly result in use of already freed memory or an attempt to free already freed memory blocks (double-free flaw), possibly causing a crash or arbitrary code execution. (CVE-2007-5901, CVE-2007-5971) In addition to the security issues resolved above, the following bugs were also fixed : * delegated krb5 credentials were not properly stored when SPNEGO was the underlying mechanism during GSSAPI authentication. Consequently, applications attempting to copy delegated Kerberos 5 credentials into a credential cache received an 'Invalid credential was supplied' message rather than a copy of the delegated credentials. With this update, SPNEGO credentials can be properly searched, allowing applications to copy delegated credentials as expected. * applications can initiate context acceptance (via gss_accept_sec_context) without passing a ret_flags value that would indicate that credentials were delegated. A delegated credential handle should have been returned in such instances. This updated package adds a temp_ret_flag that stores the credential status in the event no other ret_flags value is passed by an application calling gss_accept_sec_context. * kpasswd did not fallback to TCP on receipt of certain errors, or when a packet was too big for UDP. This update corrects this. * when the libkrb5 password-routine generated a set-password or change-password request, incorrect sequence numbers were generated for all requests subsequent to the first request. This caused password change requests to fail if the primary server was unavailable. This updated package corrects this by saving the sequence number value after the AP-REQ data is built and restoring this value before the request is generated. * when a user's password expired, kinit would not prompt that user to change the password, instead simply informing the user their password had expired. This update corrects this behavior: kinit now prompts for a new password to be set when a password has expired. All krb5 users are advised to upgrade to these updated packages, which contain backported fixes to address these vulnerabilities and fix these bugs.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 43676
    published 2010-01-06
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=43676
    title CentOS 5 : krb5 (CESA-2008:0164)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2008-0164.NASL
    description Updated krb5 packages that resolve several issues and fix multiple bugs are now available for Red Hat Enterprise Linux 5. This update has been rated as having critical security impact by the Red Hat Security Response Team. Kerberos is a network authentication system which allows clients and servers to authenticate to each other through use of symmetric encryption and a trusted third party, the KDC. A flaw was found in the way the MIT Kerberos Authentication Service and Key Distribution Center server (krb5kdc) handled Kerberos v4 protocol packets. An unauthenticated remote attacker could use this flaw to crash the krb5kdc daemon, disclose portions of its memory, or possibly execute arbitrary code using malformed or truncated Kerberos v4 protocol requests. (CVE-2008-0062, CVE-2008-0063) This issue only affected krb5kdc with Kerberos v4 protocol compatibility enabled, which is the default setting on Red Hat Enterprise Linux 4. Kerberos v4 protocol support can be disabled by adding 'v4_mode=none' (without the quotes) to the '[kdcdefaults]' section of /var/kerberos/krb5kdc/kdc.conf. Jeff Altman of Secure Endpoints discovered a flaw in the RPC library as used by MIT Kerberos kadmind server. An unauthenticated remote attacker could use this flaw to crash kadmind or possibly execute arbitrary code. This issue only affected systems with certain resource limits configured and did not affect systems using default resource limits used by Red Hat Enterprise Linux 5. (CVE-2008-0947) Red Hat would like to thank MIT for reporting these issues. Multiple memory management flaws were discovered in the GSSAPI library used by MIT Kerberos. These flaws could possibly result in use of already freed memory or an attempt to free already freed memory blocks (double-free flaw), possibly causing a crash or arbitrary code execution. (CVE-2007-5901, CVE-2007-5971) In addition to the security issues resolved above, the following bugs were also fixed : * delegated krb5 credentials were not properly stored when SPNEGO was the underlying mechanism during GSSAPI authentication. Consequently, applications attempting to copy delegated Kerberos 5 credentials into a credential cache received an 'Invalid credential was supplied' message rather than a copy of the delegated credentials. With this update, SPNEGO credentials can be properly searched, allowing applications to copy delegated credentials as expected. * applications can initiate context acceptance (via gss_accept_sec_context) without passing a ret_flags value that would indicate that credentials were delegated. A delegated credential handle should have been returned in such instances. This updated package adds a temp_ret_flag that stores the credential status in the event no other ret_flags value is passed by an application calling gss_accept_sec_context. * kpasswd did not fallback to TCP on receipt of certain errors, or when a packet was too big for UDP. This update corrects this. * when the libkrb5 password-routine generated a set-password or change-password request, incorrect sequence numbers were generated for all requests subsequent to the first request. This caused password change requests to fail if the primary server was unavailable. This updated package corrects this by saving the sequence number value after the AP-REQ data is built and restoring this value before the request is generated. * when a user's password expired, kinit would not prompt that user to change the password, instead simply informing the user their password had expired. This update corrects this behavior: kinit now prompts for a new password to be set when a password has expired. All krb5 users are advised to upgrade to these updated packages, which contain backported fixes to address these vulnerabilities and fix these bugs.
    last seen 2019-02-21
    modified 2018-11-27
    plugin id 31616
    published 2008-03-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=31616
    title RHEL 5 : krb5 (RHSA-2008:0164)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2008-2647.NASL
    description This update incorporates fixes included in MITKRB5-SA-2008-001 (use of uninitialized pointer / double-free in the KDC when v4 compatibility is enabled) and MITKRB5-SA-2008-002 (incorrect handling of high-numbered descriptors in the RPC library). This update also incorporates less-critical fixes for a double- free (CVE-2007-5971) and an incorrect attempt to free non-heap memory (CVE-2007-5901) in the GSSAPI library. This update also fixes an incorrect calculation of the length of the absolute path name of a file when the relative path is known and the library needs to look up which SELinux label to apply to the file. 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 2016-12-08
    plugin id 31670
    published 2008-03-26
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=31670
    title Fedora 8 : krb5-1.6.2-14.fc8 (2008-2647)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2008-0180.NASL
    description From Red Hat Security Advisory 2008:0180 : Updated krb5 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 4. This update has been rated as having critical security impact by the Red Hat Security Response Team. Kerberos is a network authentication system which allows clients and servers to authenticate to each other through use of symmetric encryption and a trusted third party, the KDC. A flaw was found in the way the MIT Kerberos Authentication Service and Key Distribution Center server (krb5kdc) handled Kerberos v4 protocol packets. An unauthenticated remote attacker could use this flaw to crash the krb5kdc daemon, disclose portions of its memory, or possibly execute arbitrary code using malformed or truncated Kerberos v4 protocol requests. (CVE-2008-0062, CVE-2008-0063) This issue only affected krb5kdc with Kerberos v4 protocol compatibility enabled, which is the default setting on Red Hat Enterprise Linux 4. Kerberos v4 protocol support can be disabled by adding 'v4_mode=none' (without the quotes) to the '[kdcdefaults]' section of /var/kerberos/krb5kdc/kdc.conf. Red Hat would like to thank MIT for reporting these issues. A double-free flaw was discovered in the GSSAPI library used by MIT Kerberos. This flaw could possibly cause a crash of the application using the GSSAPI library. (CVE-2007-5971) All krb5 users are advised to update to these erratum packages which contain backported fixes to correct these issues.
    last seen 2019-02-21
    modified 2018-07-18
    plugin id 67668
    published 2013-07-12
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=67668
    title Oracle Linux 4 : krb5 (ELSA-2008-0180)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2008-0180.NASL
    description Updated krb5 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 4. This update has been rated as having critical security impact by the Red Hat Security Response Team. Kerberos is a network authentication system which allows clients and servers to authenticate to each other through use of symmetric encryption and a trusted third party, the KDC. A flaw was found in the way the MIT Kerberos Authentication Service and Key Distribution Center server (krb5kdc) handled Kerberos v4 protocol packets. An unauthenticated remote attacker could use this flaw to crash the krb5kdc daemon, disclose portions of its memory, or possibly execute arbitrary code using malformed or truncated Kerberos v4 protocol requests. (CVE-2008-0062, CVE-2008-0063) This issue only affected krb5kdc with Kerberos v4 protocol compatibility enabled, which is the default setting on Red Hat Enterprise Linux 4. Kerberos v4 protocol support can be disabled by adding 'v4_mode=none' (without the quotes) to the '[kdcdefaults]' section of /var/kerberos/krb5kdc/kdc.conf. Red Hat would like to thank MIT for reporting these issues. A double-free flaw was discovered in the GSSAPI library used by MIT Kerberos. This flaw could possibly cause a crash of the application using the GSSAPI library. (CVE-2007-5971) All krb5 users are advised to update to these erratum packages which contain backported fixes to correct these issues.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 31627
    published 2008-03-21
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=31627
    title CentOS 4 : krb5 (CESA-2008:0180)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2008-2637.NASL
    description This update incorporates fixes included in MITKRB5-SA-2008-001 (use of uninitialized pointer / double-free in the KDC when v4 compatibility is enabled) and MITKRB5-SA-2008-002 (incorrect handling of high-numbered descriptors in the RPC library). This update also incorporates less-critical fixes for a double- free (CVE-2007-5971) and an incorrect attempt to free non-heap memory (CVE-2007-5901) in the GSSAPI library. 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 2016-12-08
    plugin id 31668
    published 2008-03-26
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=31668
    title Fedora 7 : krb5-1.6.1-9.fc7 (2008-2637)
  • NASL family Mandriva Local Security Checks
    NASL id MANDRIVA_MDVSA-2008-070.NASL
    description A memory management flaw was found in the GSSAPI library used by Kerberos that could result in an attempt to free already freed memory, possibly leading to a crash or allowing the execution of arbitrary code (CVE-2007-5971). A flaw was discovered in how the Kerberos krb5kdc handled Kerberos v4 protocol packets. An unauthenticated remote attacker could use this flaw to crash the krb5kdc daemon, disclose portions of its memory, or possibly %execute arbitrary code using malformed or truncated Kerberos v4 protocol requests (CVE-2008-0062, CVE-2008-0063). This issue only affects krb5kdc when it has Kerberos v4 protocol compatibility enabled, which is a compiled-in default in all Kerberos versions that Mandriva Linux ships prior to Mandriva Linux 2008.0. Kerberos v4 protocol support can be disabled by adding v4_mode=none (without quotes) to the [kdcdefaults] section of /etc/kerberos/krb5kdc/kdc.conf. A flaw in the RPC library as used in Kerberos' kadmind was discovered by Jeff Altman of Secure Endpoints. An unauthenticated remote attacker could use this vulnerability to crash kadmind or possibly execute arbitrary code in systems with certain resource limits configured; this does not affect the default resource limits used by Mandriva Linux (CVE-2008-0947). The updated packages have been patched to correct these issues.
    last seen 2019-02-21
    modified 2018-07-19
    plugin id 37527
    published 2009-04-23
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=37527
    title Mandriva Linux Security Advisory : krb5 (MDVSA-2008:070)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2008-0164.NASL
    description From Red Hat Security Advisory 2008:0164 : Updated krb5 packages that resolve several issues and fix multiple bugs are now available for Red Hat Enterprise Linux 5. This update has been rated as having critical security impact by the Red Hat Security Response Team. Kerberos is a network authentication system which allows clients and servers to authenticate to each other through use of symmetric encryption and a trusted third party, the KDC. A flaw was found in the way the MIT Kerberos Authentication Service and Key Distribution Center server (krb5kdc) handled Kerberos v4 protocol packets. An unauthenticated remote attacker could use this flaw to crash the krb5kdc daemon, disclose portions of its memory, or possibly execute arbitrary code using malformed or truncated Kerberos v4 protocol requests. (CVE-2008-0062, CVE-2008-0063) This issue only affected krb5kdc with Kerberos v4 protocol compatibility enabled, which is the default setting on Red Hat Enterprise Linux 4. Kerberos v4 protocol support can be disabled by adding 'v4_mode=none' (without the quotes) to the '[kdcdefaults]' section of /var/kerberos/krb5kdc/kdc.conf. Jeff Altman of Secure Endpoints discovered a flaw in the RPC library as used by MIT Kerberos kadmind server. An unauthenticated remote attacker could use this flaw to crash kadmind or possibly execute arbitrary code. This issue only affected systems with certain resource limits configured and did not affect systems using default resource limits used by Red Hat Enterprise Linux 5. (CVE-2008-0947) Red Hat would like to thank MIT for reporting these issues. Multiple memory management flaws were discovered in the GSSAPI library used by MIT Kerberos. These flaws could possibly result in use of already freed memory or an attempt to free already freed memory blocks (double-free flaw), possibly causing a crash or arbitrary code execution. (CVE-2007-5901, CVE-2007-5971) In addition to the security issues resolved above, the following bugs were also fixed : * delegated krb5 credentials were not properly stored when SPNEGO was the underlying mechanism during GSSAPI authentication. Consequently, applications attempting to copy delegated Kerberos 5 credentials into a credential cache received an 'Invalid credential was supplied' message rather than a copy of the delegated credentials. With this update, SPNEGO credentials can be properly searched, allowing applications to copy delegated credentials as expected. * applications can initiate context acceptance (via gss_accept_sec_context) without passing a ret_flags value that would indicate that credentials were delegated. A delegated credential handle should have been returned in such instances. This updated package adds a temp_ret_flag that stores the credential status in the event no other ret_flags value is passed by an application calling gss_accept_sec_context. * kpasswd did not fallback to TCP on receipt of certain errors, or when a packet was too big for UDP. This update corrects this. * when the libkrb5 password-routine generated a set-password or change-password request, incorrect sequence numbers were generated for all requests subsequent to the first request. This caused password change requests to fail if the primary server was unavailable. This updated package corrects this by saving the sequence number value after the AP-REQ data is built and restoring this value before the request is generated. * when a user's password expired, kinit would not prompt that user to change the password, instead simply informing the user their password had expired. This update corrects this behavior: kinit now prompts for a new password to be set when a password has expired. All krb5 users are advised to upgrade to these updated packages, which contain backported fixes to address these vulnerabilities and fix these bugs.
    last seen 2019-02-21
    modified 2018-07-18
    plugin id 67664
    published 2013-07-12
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=67664
    title Oracle Linux 5 : krb5 (ELSA-2008-0164)
oval via4
accepted 2013-04-29T04:04:23.426-04:00
class vulnerability
contributors
  • name Aharon Chernin
    organization SCAP.com, LLC
  • name Dragos Prisaca
    organization G2, Inc.
definition_extensions
  • comment The operating system installed on the system is Red Hat Enterprise Linux 4
    oval oval:org.mitre.oval:def:11831
  • comment CentOS Linux 4.x
    oval oval:org.mitre.oval:def:16636
  • comment Oracle Linux 4.x
    oval oval:org.mitre.oval:def:15990
  • comment The operating system installed on the system is Red Hat Enterprise Linux 5
    oval oval:org.mitre.oval:def:11414
  • comment The operating system installed on the system is CentOS Linux 5.x
    oval oval:org.mitre.oval:def:15802
  • comment Oracle Linux 5.x
    oval oval:org.mitre.oval:def:15459
description Double free vulnerability in the gss_krb5int_make_seal_token_v3 function in lib/gssapi/krb5/k5sealv3.c in MIT Kerberos 5 (krb5) has unknown impact and attack vectors.
family unix
id oval:org.mitre.oval:def:10296
status accepted
submitted 2010-07-09T03:56:16-04:00
title Double free vulnerability in the gss_krb5int_make_seal_token_v3 function in lib/gssapi/krb5/k5sealv3.c in MIT Kerberos 5 (krb5) has unknown impact and attack vectors.
version 24
redhat via4
advisories
  • rhsa
    id RHSA-2008:0164
  • rhsa
    id RHSA-2008:0180
rpms
  • krb5-devel-0:1.6.1-17.el5_1.1
  • krb5-libs-0:1.6.1-17.el5_1.1
  • krb5-server-0:1.6.1-17.el5_1.1
  • krb5-workstation-0:1.6.1-17.el5_1.1
  • krb5-devel-0:1.3.4-54.el4_6.1
  • krb5-libs-0:1.3.4-54.el4_6.1
  • krb5-server-0:1.3.4-54.el4_6.1
  • krb5-workstation-0:1.3.4-54.el4_6.1
refmap via4
apple APPLE-SA-2008-03-18
bid 26750
bugtraq 20080319 rPSA-2008-0112-1 krb5 krb5-server krb5-services krb5-test krb5-workstation
confirm
fedora
  • FEDORA-2008-2637
  • FEDORA-2008-2647
fulldisc
  • 20071208 MIT Kerberos 5: Multiple vulnerabilities
  • 20071208 Venustech reports of MIT krb5 vulns [CVE-2007-5894 CVE-2007-5901 CVE-2007-5902 CVE-2007-5971 CVE-2007-5972]
gentoo GLSA-200803-31
mandriva
  • MDVSA-2008:069
  • MDVSA-2008:070
misc http://bugs.gentoo.org/show_bug.cgi?id=199212
osvdb 43345
secunia
  • 28636
  • 29420
  • 29450
  • 29451
  • 29457
  • 29462
  • 29464
  • 29516
  • 39290
  • 39784
suse SUSE-SR:2008:002
ubuntu
  • USN-924-1
  • USN-940-1
vupen
  • ADV-2008-0924
  • ADV-2010-1192
statements via4
contributor Mark J Cox
lastmodified 2007-12-14
organization Red Hat
statement Red Hat is aware of this issue and is tracking it via the following bug: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=CVE-2007-5971 The Red Hat Security Response Team has rated this issue as having low security impact, a future update may address this flaw. See http://marc.info/?m=119743235325151
Last major update 07-03-2011 - 22:01
Published 05-12-2007 - 21:46
Last modified 15-10-2018 - 17:48
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