USN-1316-1: t1lib vulnerability

Ubuntu Security Notice USN-1316-1

21st December, 2011

t1lib vulnerability

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

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

Summary

t1lib could be made to crash or run programs as your login if it opened a specially crafted font file.

Software description

  • t1lib - Type 1 font rasterizer library - runtime

Details

Jonathan Brossard discovered that t1lib did not correctly handle certain
malformed font files. If a user were tricked into using a specially crafted
font file, a remote attacker could cause t1lib to crash or possibly execute
arbitrary code with user privileges.

Update instructions

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

Ubuntu 11.10:
libt1-5 5.1.2-3ubuntu0.11.10.1
Ubuntu 11.04:
libt1-5 5.1.2-3ubuntu0.11.04.1
Ubuntu 10.10:
libt1-5 5.1.2-3ubuntu0.10.10.1
Ubuntu 10.04 LTS:
libt1-5 5.1.2-3ubuntu0.10.04.1

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-2011-0764