MIT Kerberos administration daemon (kadmind) GSS-API library code execution

kerberos-kadmind-code-execution (33413)

High Risk

Description:

The MIT Kerberos administration daemon (kadmind) could allow a remote attacker to execute arbitrary code on the system, caused by a double free memory corruption vulnerability in the kg_unseal_v1() function in src/lib/gssapi/krb5/k5unseal.c, which is part of the GSS-API library. A remote authenticated attacker could exploit this vulnerability by sending a specially crafted Kerberos message to execute arbitrary code on the system with root privileges or cause the affected application to crash.

Platforms Affected:

• Apple, Mac OS X 10.3.9
• Apple, Mac OS X 10.4.9
• Apple, Mac OS X Server 10.3.9
• Apple, Mac OS X Server 10.4.9
• Canonical, Ubuntu 5.10
• Canonical, Ubuntu 6.06 LTS
• Canonical, Ubuntu 6.10
• Debian, Debian Linux 3.1
• Debian, Debian Linux 4.0
• Gentoo, Linux
• HP, HP-UX B.11.11
• HP, HP-UX B.11.23
• HP, HP-UX B.11.31
• MandrakeSoft, Mandrake Linux 2006
• MandrakeSoft, Mandrake Linux 2006 X86_64
• MandrakeSoft, Mandrake Linux 2007 X86_64
• MandrakeSoft, Mandrake Linux 2007
• MandrakeSoft, Mandrake Linux 2007.1 X86_64
• MandrakeSoft, Mandrake Linux 2007.1
• MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
• MandrakeSoft, Mandrake Linux Corporate Server 3.0
• MandrakeSoft, Mandrake Linux Corporate Server 4.0
• MandrakeSoft, Mandrake Linux Corporate Server 4.0 X86_64
• MandrakeSoft, Mandrake Multi Network Firewall 2.0
• MIT, Kerberos 5-1.3
• MIT, Kerberos 5-1.3.1
• MIT, Kerberos 5-1.3.2
• MIT, Kerberos 5-1.3.3
• MIT, Kerberos 5-1.3.4
• MIT, Kerberos 5-1.3.5
• MIT, Kerberos 5-1.3.6
• MIT, Kerberos 5-1.4
• MIT, Kerberos 5-1.4.1
• MIT, Kerberos 5-1.4.2
• MIT, Kerberos 5-1.4.3
• MIT, Kerberos 5-1.4.4
• MIT, Kerberos 5-1.5
• MIT, Kerberos 5-1.5.1
• MIT, Kerberos 5-1.5.2
• MIT, Kerberos 5-1.5.3
• MIT, Kerberos 5-1.5.4
• MIT, Kerberos 5-1.6
• Novell, OpenSUSE 10.2
• RedHat, Enterprise Linux 2.1 ES
• RedHat, Enterprise Linux 2.1 WS
• RedHat, Enterprise Linux 2.1 AS
• RedHat, Enterprise Linux 3 Desktop
• RedHat, Enterprise Linux 3 WS
• RedHat, Enterprise Linux 3 ES
• RedHat, Enterprise Linux 3 AS
• RedHat, Enterprise Linux 4 WS
• RedHat, Enterprise Linux 4 AS
• RedHat, Enterprise Linux 4 ES
• RedHat, Enterprise Linux 4 Desktop
• RedHat, Enterprise Linux 5 Client Workstation
• RedHat, Enterprise Linux 5 Client
• RedHat, Enterprise Linux 5
• RedHat, Enterprise Linux Desktop 5.0
• RedHat, Linux Advanced Workstation 2.1 Itanium
• SuSE, SuSE Linux 10.0
• SuSE, SuSE Linux 10.1
• SuSE, SuSE Linux 9.3
• SuSE, SuSE SLED 10
• SuSE, SuSE SLES 10
• Turbolinux, Turbolinux 10 Desktop
• Turbolinux, Turbolinux 10 F...
• Turbolinux, Turbolinux 10 Server
• Turbolinux, Turbolinux 10 Server x64 Ed
• Turbolinux, Turbolinux 8 Server
• Turbolinux, Turbolinux Home
• Turbolinux, Turbolinux Multimedia
• Turbolinux, Turbolinux Personal
• Turbolinux, Turbolinux Appliance Server 2.0

Remedy:

Refer to MITKRB5-SA-2007-003 for patch or upgrade information. See References.

For Apple Mac OS X:
Apply Apple Security Update 2007-004, available from the Apple Web site. See References.

For Red Hat Linux (krb5):
Refer to RHSA-2007:0095 for patch, upgrade, or suggested workaround information. See References.

For Gentoo Linux:
Refer to GLSA 200704-02 for patch, upgrade, or suggested workaround information. See References.

For Debian GNU/Linux 3.1 (krb5):
Refer to DSA-1276-1 for patch, upgrade, or suggested workaround information. See References.

For SUSE Linux (krb5):
Refer to SUSE-SA:2007:025 for patch, upgrade, or suggested workaround information. See References.

For Ubuntu Linux (krb5):
Refer to USN-449-1 for patch, upgrade, or suggested workaround information. See References.

For Mandriva Linux:
Refer to MDKSA-2007:077 for patch, upgrade, or suggested workaround information. See References.

For Turbolinux (krb5):
Refer to TLSA-2007-24 for patch, upgrade, or suggested workaround information. See References.

For HP-UX:
Refer to HPSBUX02217 SSRT071337 for patch, upgrade, or suggested workaround information. See References.

For other distributions:
Contact your vendor for upgrade or patch information.

Consequences:

Gain Access

References:

• Apple Security Update 2007-004, About Security Update 2007-004 at http://docs.info.apple.com/article.html?artnum=305391.
• Apple Web site, Apple security updates at http://docs.info.apple.com/article.html?artnum=61798.
• HPSBUX02217 SSRT071337 , HP-UX running Kerberos, Remote Arbitrary Code Execution at http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01056923.
• MITKRB5-SA-2007-003 , double-free vulnerability in kadmind (via GSS-API library) at http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2007-003.txt.
• ASA-2007-143: krb5 security update (RHSA-2007-0095)
• BID-23282: MIT Kerberos Administration Daemon Kadmind Double Free Memory Corruption Vulnerabilities
• CVE-2007-1216: Double free vulnerability in the GSS-API library (lib/gssapi/krb5/k5unseal.c), as used by the Kerberos administration daemon (kadmind) in MIT krb5 before 1.6.1, when used with the authentication method provided by the RPCSEC_GSS RPC library, allows remote authenticated users to execute arbitrary code and modify the Kerberos key database via a message with an an invalid direction encoding.
• DSA-1276: krb5 -- several vulnerabilities
• GLSA-200704-02: MIT Kerberos 5: Arbitrary remote code execution
• MDKSA-2007:077: Updated krb5 packages fix vulnerabilities
• MDKSA-2007:077-1: Updated krb5 packages fix vulnerabilities
• RHSA-2007-0095: Critical: krb5 security update
• SA24740: Kerberos Multiple Vulnerabilities
• SA24966: Mac OS X Security Update Fixes Multiple Vulnerabilities
• SECTRACK ID: 1017852: Kerberos kadmin `gss_buffer_t` May Be Freed Twice Allowing Remote Authenticated Users to Execute Arbitrary Code
• SUSE-SA:2007:025: krb5 security problems

Reported:

Apr 03, 2007

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