USN-1267-1: FreeType vulnerabilities

Ubuntu Security Notice USN-1267-1

17th November, 2011

freetype vulnerabilities

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

  • Ubuntu 11.10
  • Ubuntu 11.04
  • Ubuntu 10.10
  • Ubuntu 10.04 LTS
  • Ubuntu 8.04 LTS

Summary

FreeType could be made to crash or run programs as your login if it opened a specially crafted font file.

Software description

  • freetype - FreeType 2 is a font engine library

Details


It was discovered that FreeType did not correctly handle certain malformed
Type 1 font files. If a user were tricked into using a specially crafted
font file, a remote attacker could cause FreeType to crash or possibly
execute arbitrary code with user privileges. (CVE-2011-3256)

It was discovered that FreeType did not correctly handle certain malformed
CID-keyed PostScript font files. If a user were tricked into using a specially
crafted font file, a remote attacker could cause FreeType to crash or possibly
execute arbitrary code with user privileges. (CVE-2011-3439)

Update instructions

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

Ubuntu 11.10:
libfreetype6 2.4.4-2ubuntu1.1
Ubuntu 11.04:
libfreetype6 2.4.4-1ubuntu2.2
Ubuntu 10.10:
libfreetype6 2.4.2-2ubuntu0.3
Ubuntu 10.04 LTS:
libfreetype6 2.3.11-1ubuntu2.5
Ubuntu 8.04 LTS:
libfreetype6 2.3.5-1ubuntu4.8.04.7

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

After a standard system update you need to restart your session to make
all the necessary changes.

References

CVE-2011-3256, CVE-2011-3439