USN-1612-1: libgssglue vulnerability

15 October 2012

libgssglue vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 12.04 LTS
  • Ubuntu 11.10
  • Ubuntu 11.04
  • Ubuntu 10.04 LTS

Summary

Privilege escalation via the GSSAPI_MECH_CONF environment variable with setuid programs.

Software Description

  • libgssglue - header files and docs for libgssglue

Details

It was discovered that libgssglue incorrectly handled the GSSAPI_MECH_CONF environment variable when running a privileged binary. A local attacker could exploit this to gain root privileges. (CVE-2011-2709)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 12.04 LTS
libgssglue1 - 0.3-4ubuntu0.1
Ubuntu 11.10
libgssglue1 - 0.3-1ubuntu1.1
Ubuntu 11.04
libgssglue1 - 0.1-4ubuntu1.1
Ubuntu 10.04 LTS
libgssglue1 - 0.1-4ubuntu0.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary changes.

References