Postfix symlink code execution

postfix-symlink-code-execution (44460) The risk level is classified as MediumMedium Risk

Description:

Postfix could allow a local attacker with write permission to the mail spool directory to execute arbitrary code on the system when a root mailbox does not exist on the system, caused by an error when handling symlink files. By creating hardlink a root-owned symlink to /var/mail, an attacker could execute arbitrary code with root privileges.

*CVSS:

Base Score: 6.9
  Access Vector: Local
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: Complete
  Integrity Impact: Complete
  Availability Impact: Complete
 
Temporal Score: 5.1
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Privileges

Remedy:

Upgrade to the latest version of Postfix (2.5.4 Patchlevel 4 or later), available from the Postfix Web site. See References.

References:

Platforms Affected:

  • Canonical Ubuntu 6.06 LTS
  • Canonical Ubuntu 7.04
  • Canonical Ubuntu 7.10
  • Canonical Ubuntu 8.04 LTS
  • Debian Debian Linux 4.0
  • Gentoo Linux
  • MandrakeSoft Mandrake Linux 2007.1
  • MandrakeSoft Mandrake Linux 2007.1 X86_64
  • MandrakeSoft Mandrake Linux 2008.0 X86_64
  • MandrakeSoft Mandrake Linux 2008.0
  • MandrakeSoft Mandrake Linux 2008.1
  • MandrakeSoft Mandrake Linux 2008.1 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 3.0
  • MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 4.0
  • Novell Linux Desktop 9
  • Novell Linux POS 9
  • Novell Open Enterprise Server
  • Novell OpenSUSE 10.2
  • Novell OpenSUSE 10.3
  • Novell OpenSUSE 11.0
  • Novell SUSE Linux Enterprise Desktop 10 SP1
  • Novell SUSE Linux Enterprise Desktop 10 SP2
  • Novell SUSE Linux Enterprise Server 10 SP1
  • Novell SUSE Linux Enterprise Server 10 SP2
  • RedHat Enterprise Linux 3 AS
  • RedHat Enterprise Linux 3 WS
  • RedHat Enterprise Linux 3 ES
  • RedHat Enterprise Linux 3 Desktop
  • RedHat Enterprise Linux 4 AS
  • RedHat Enterprise Linux 4 Desktop
  • RedHat Enterprise Linux 4 ES
  • RedHat Enterprise Linux 4 WS
  • RedHat Enterprise Linux 4.7.z AS
  • RedHat Enterprise Linux 5
  • RedHat Enterprise Linux 5 Client
  • RedHat Enterprise Linux 5.2.z EUS
  • RedHat Red Hat Enterprise Linux 4.7.z ES
  • SuSE SuSE SLES 9
  • Turbolinux Turbolinux 10 Server
  • Turbolinux Turbolinux 10 Server x64 Ed
  • Turbolinux Turbolinux 11 Server
  • Turbolinux Turbolinux 11 Server x64 Ed
  • Wietse Venema Postfix 2.3.0
  • Wietse Venema Postfix 2.3.1
  • Wietse Venema Postfix 2.3.10
  • Wietse Venema Postfix 2.3.11
  • Wietse Venema Postfix 2.3.12
  • Wietse Venema Postfix 2.3.13
  • Wietse Venema Postfix 2.3.14
  • Wietse Venema Postfix 2.3.2
  • Wietse Venema Postfix 2.3.3
  • Wietse Venema Postfix 2.3.4
  • Wietse Venema Postfix 2.3.5
  • Wietse Venema Postfix 2.3.6
  • Wietse Venema Postfix 2.3.7
  • Wietse Venema Postfix 2.3.8
  • Wietse Venema Postfix 2.3.9
  • Wietse Venema Postfix 2.4.0
  • Wietse Venema Postfix 2.4.1
  • Wietse Venema Postfix 2.4.2
  • Wietse Venema Postfix 2.4.3
  • Wietse Venema Postfix 2.4.4
  • Wietse Venema Postfix 2.4.5
  • Wietse Venema Postfix 2.4.6
  • Wietse Venema Postfix 2.4.7
  • Wietse Venema Postfix 2.5.0
  • Wietse Venema Postfix 2.5.1
  • Wietse Venema Postfix 2.5.2
  • Wietse Venema Postfix 2.5.3
  • Wietse Venema Postfix 2.6.0
  • Wietse Venema Postfix

Reported:

Aug 14, 2008

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email ignore thisxforceignore this@ignore thisus.ignore thisibm.comignore this

Return to the main page