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.