USN-1335-1: t1lib vulnerabilities

Publication date

19 January 2012

Overview

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


Packages

  • t1lib - Type 1 font rasterizer library - runtime

Details

Jon Larimer discovered that t1lib did not properly parse AFM fonts. 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. (CVE-2010-2642, CVE-2011-0433)

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. (CVE-2011-1552,
CVE-2011-1553, CVE-2011-1554)

Jon Larimer discovered that t1lib did not properly parse AFM fonts. 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. (CVE-2010-2642, CVE-2011-0433)

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. (CVE-2011-1552,
CVE-2011-1553, CVE-2011-1554)

Update instructions

In general, a standard system update will 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
11.10 oneiric libt1-5 –  5.1.2-3ubuntu0.11.10.2
11.04 natty libt1-5 –  5.1.2-3ubuntu0.11.04.2
10.10 maverick libt1-5 –  5.1.2-3ubuntu0.10.10.2
10.04 lucid libt1-5 –  5.1.2-3ubuntu0.10.04.2

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