U programskom paketu t1lib otkrivena je sigurnosna ranjivost koja se može iskoristiti za udaljeno izvođenje DoS napada i pokretanje proizvoljnog programskog koda.

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Ubuntu Security Notice USN-1316-1
December 21, 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 versions:

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

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

References:
  http://www.ubuntu.com/usn/usn-1316-1
  CVE-2011-0764

Package Information:
  https://launchpad.net/ubuntu/+source/t1lib/5.1.2-3ubuntu0.11.10.1
  https://launchpad.net/ubuntu/+source/t1lib/5.1.2-3ubuntu0.11.04.1
  https://launchpad.net/ubuntu/+source/t1lib/5.1.2-3ubuntu0.10.10.1
  https://launchpad.net/ubuntu/+source/t1lib/5.1.2-3ubuntu0.10.04.1