USN-2536-1: libXfont vulnerabilities

Publication date

18 March 2015

Overview

libXfont could be made to crash or run programs as an administrator if it opened a specially crafted bdf font file.


Packages

  • libxfont - X11 font rasterisation library

Details

Ilja van Sprundel, Alan Coopersmith, and William Robinet discovered that
libXfont incorrectly handled malformed bdf fonts. A local attacker could
use this issue to cause libXfont to crash, or possibly execute arbitrary
code in order to gain privileges.

Ilja van Sprundel, Alan Coopersmith, and William Robinet discovered that
libXfont incorrectly handled malformed bdf fonts. A local attacker could
use this issue to cause libXfont to crash, or possibly execute arbitrary
code in order to gain privileges.

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
14.10 utopic libxfont1 –  1:1.4.99.901-1ubuntu0.1
14.04 trusty libxfont1 –  1:1.4.7-1ubuntu0.2
12.04 precise libxfont1 –  1:1.4.4-1ubuntu0.3
10.04 lucid libxfont1 –  1:1.4.1-1ubuntu0.4

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