MIT Kerberos 5 (krb5) RPC library buffer overflow

krb5-rpclibrary-bo (41273) The risk level is classified as HighHigh Risk

Description:

The MIT Kerberos 5 (krb5) RPC library, as used by libgssrpc and kadmind, is vulnerable to a buffer overflow, caused by a memory corruption error during file descriptor handling. If a large number of open file descriptors in a process is permitted, a remote attacker could exploit this vulnerability via RPC connections to overflow a buffer and execute arbitrary code on the system with elevated privileges or cause the kadmind service to crash.

*CVSS:

Base Score: 9.3
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: Complete
  Integrity Impact: Complete
  Availability Impact: Complete
 
Temporal Score: 6.9
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

Remedy:

Refer to MIT krb5 Security Advisory 2008-002 for patch, upgrade or suggested workaround information. See References.

References:

  • MIT krb5 Security Advisory 2008-002: array overrun in RPC library used by kadmind.
  • BID-28302: MIT Kerberos5 kadmind Excessive File Descriptors Multiple Remote Code Execution Vulnerabilities
  • CVE-2008-0947: Buffer overflow in the RPC library used by libgssrpc and kadmind in MIT Kerberos 5 (krb5) 1.4 through 1.6.3 allows remote attackers to execute arbitrary code by triggering a large number of open file descriptors.
  • DSA-1524: krb5 -- several vulnerabilities
  • GLSA-200803-31: MIT Kerberos 5: Multiple vulnerabilities
  • MDVSA-2008:069: Updated Kerberos packages fix multiple vulnerabilities
  • MDVSA-2008:070: Updated Kerberos packages fix multiple vulnerabilities
  • RHSA-2008-0164: Critical: krb5 security and bugfix update
  • SA29428: Kerberos Multiple Vulnerabilities
  • SA29663: Novell Kerberos KDC Multiple Vulnerabilities
  • SECTRACK ID: 1019631: Kerberos kadmind RPC Library Array Overrun May Let Remote Users Execute Arbitrary Code
  • SUSE-SA:2008:016: CUPS heap overflow problem

Platforms Affected:

  • Canonical Ubuntu 6.06 LTS
  • Canonical Ubuntu 6.10
  • Canonical Ubuntu 7.04
  • Canonical Ubuntu 7.10
  • Debian Debian Linux 3.1
  • Debian Debian Linux 4.0
  • Gentoo Linux
  • MandrakeSoft Mandrake Linux 2007
  • MandrakeSoft Mandrake Linux 2007 X86_64
  • MandrakeSoft Mandrake Linux 2007.1 X86_64
  • MandrakeSoft Mandrake Linux 2007.1
  • MandrakeSoft Mandrake Linux 2008.0 X86_64
  • MandrakeSoft Mandrake Linux 2008.0
  • MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 4.0
  • 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 5-1.6
  • MIT Kerberos 5-1.6.1
  • MIT Kerberos 5-1.6.2
  • MIT Kerberos 5-1.6.3
  • Novell Linux Desktop 9
  • Novell OpenSUSE 10.2
  • Novell OpenSUSE 10.3
  • Novell SLE SDK 10 SP1
  • Novell SLE SDK 10
  • Novell SUSE Linux Enterprise Desktop 10 SP1
  • Novell SUSE Linux Enterprise Server 10
  • Novell SUSE Linux Enterprise Server 10 SP1
  • RedHat Enterprise Linux 5 Client
  • RedHat Enterprise Linux 5 Client Workstation
  • RedHat Enterprise Linux 5
  • Turbolinux Turbolinux 11 Server
  • Turbolinux Turbolinux 11 Server x64 Ed

Reported:

Mar 18, 2008

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