MIT Kerberos 5 (krb5) KDC (krb5kdc) Kerberos 4 support information disclosure

krb5-kdc-kerberos4-info-disclosure (41277) The risk level is classified as LowLow Risk

Description:

MIT Kerberos 5 (krb5) could allow a remote attacker to obtain sensitive information, caused by a buffer clearing error in KDC (krb5kdc) when Kerberos 4 support is enabled. By sending a specially-crafted Kerberos 4 message, an attacker could trigger a truncated error message that returns uninitialized stack data.

*CVSS:

Base Score: 4.3
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: Partial
  Integrity Impact: None
  Availability Impact: None
 
Temporal Score: 3.2
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Obtain Information

Remedy:

Refer to MIT krb5 Security Advisory 2008-001 for patch, upgrade or suggested workaround information. See References.

For Mac OS X:
Apply Security Update 2008-002, available from the Apple Web site. See References.

For other distributions:
Apply the appropriate update for your system. See References.

References:

  • Apple Web site: About Security Update 2008-002.
  • MIT krb5 Security Advisory 2008-001: double-free, uninitialized data vulnerabilities in krb5kdc.
  • VMSA-2008-0009: Updates to VMware Workstation, VMware Player, VMware ACE, VMware Fusion, VMware Server, VMware VIX API, VMware ESX, VMware ESXi resolve critical security issues.
  • ASA-2008-144: krb5 security update (RHSA-2008-0181)
  • ASA-2008-177: krb5 security update (RHSA-2008-0180)
  • ASA-2008-178: krb5 security update (RHSA-2008-0182)
  • BID-28303: MIT Kerberos 5 KDC Multiple Memory Corruption Based Information Disclosure Vulnerabilities
  • CVE-2008-0063: The Kerberos 4 support in KDC in MIT Kerberos 5 (krb5kdc) does not properly clear the unused portion of a buffer when generating an error message, which might allow remote attackers to obtain sensitive information, aka Uninitialized stack values.
  • 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
  • MDVSA-2008:071: Updated Kerberos packages fix multiple vulnerabilities
  • RHSA-2008-0164: Critical: krb5 security and bugfix update
  • RHSA-2008-0180: Critical: krb5 security update
  • RHSA-2008-0181: Critical: krb5 security update
  • RHSA-2008-0182: Critical: krb5 security update
  • SA29420: Mac OS X Security Update Fixes Multiple Vulnerabilities
  • SA29428: Kerberos Multiple Vulnerabilities
  • SA29663: Novell Kerberos KDC Multiple Vulnerabilities
  • SA30535: VMware ESX Server Multiple Security Updates
  • SECTRACK ID: 1019627: Kerberos KDC Stack Initialization Bug May Disclose Stack Data to Remote Users
  • SUSE-SA:2008:016: CUPS heap overflow problem

Platforms Affected:

  • Apple Mac OS X 10.4.11
  • Apple Mac OS X 10.5.2
  • Apple Mac OS X Server 10.4.11
  • Apple Mac OS X Server 10.5.2
  • 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
  • EMC VMware Player 2.0
  • EMC VMware Player 2.0.1
  • EMC VMware Player 2.0.2
  • EMC VMware Player 2.0.3
  • Gentoo Linux
  • 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 2008.0 X86_64
  • MandrakeSoft Mandrake Linux 2008.0
  • 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 5-1.6.3
  • Novell Linux Desktop 9
  • Novell OpenSUSE 10.2
  • Novell OpenSUSE 10.3
  • Novell SLE SDK 10
  • Novell SLE SDK 10 SP1
  • Novell SUSE Linux Enterprise Desktop 10 SP1
  • Novell SUSE Linux Enterprise Server 10
  • Novell SUSE Linux Enterprise Server 10 SP1
  • RedHat Enterprise Linux 2.1 ES
  • RedHat Enterprise Linux 2.1 WS
  • RedHat Enterprise Linux 2.1 AS
  • RedHat Enterprise Linux 3 ES
  • RedHat Enterprise Linux 3 WS
  • RedHat Enterprise Linux 3 AS
  • RedHat Enterprise Linux 3 Desktop
  • RedHat Enterprise Linux 4 WS
  • RedHat Enterprise Linux 4 ES
  • RedHat Enterprise Linux 4 AS
  • RedHat Enterprise Linux 4 Desktop
  • RedHat Enterprise Linux 4.5.z AS
  • RedHat Enterprise Linux 4.5.z ES
  • RedHat Enterprise Linux 4.6.z ES
  • RedHat Enterprise Linux 4.6.z AS
  • RedHat Enterprise Linux 5 Client Workstation
  • RedHat Enterprise Linux 5
  • RedHat Enterprise Linux 5 Client
  • RedHat Enterprise Linux 5.1.z EUS
  • RedHat Linux Advanced Workstation 2.1 Itanium
  • Turbolinux Turbolinux 11 Server
  • Turbolinux Turbolinux 11 Server x64 Ed
  • VMware ACE 2.0
  • VMware ACE 2.0.1
  • VMware ACE 2.0.2
  • VMware ACE 2.0.3
  • VMware ESX Server 3.5
  • VMware ESXi Server 3.5
  • VMware Fusion 1.0
  • VMware Fusion 1.1
  • VMware Fusion 1.1.1
  • VMware Server 1.0
  • VMware Server 1.0.1
  • VMware Server 1.0.2
  • VMware Server 1.0.3
  • VMware Server 1.0.4
  • VMware Server 1.0.5
  • VMware Workstation 6.0
  • VMware Workstation 6.0.1
  • VMware Workstation 6.0.2
  • VMware Workstation 6.0.3

Reported:

Mar 18, 2008

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