Ubuntu Security Notices
USN-448-1

USN-448-1: X.org vulnerabilities

Publication date

3 April 2007

Overview

X.org vulnerabilities

Releases

Details

Sean Larsson of iDefense Labs discovered that the MISC-XC extension of
Xorg did not correctly verify the size of allocated memory. An
authenticated user could send a specially crafted X11 request and
execute arbitrary code with root privileges. (CVE-2007-1003)

Greg MacManus of iDefense Labs discovered that the BDF font handling
code in Xorg and FreeType did not correctly verify the size of allocated
memory. If a user were tricked into using a specially crafted font, a
remote attacker could execute arbitrary code with root privileges.
(CVE-2007-1351, CVE-2007-1352)

Update instructions

After a standard system upgrade you need to reboot your computer to effect 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
6.10 edgy	libxfont1 – 1:1.2.0-0ubuntu3.1
	xserver-xorg-core – 1:1.1.1-0ubuntu12.2
	libfreetype6 – 2.2.1-5ubuntu0.1
6.06 dapper	libxfont1 – 1:1.0.0-0ubuntu3.3
	xserver-xorg-core – 1:1.0.2-0ubuntu10.6
	libfreetype6 – 2.1.10-1ubuntu2.3
5.10 breezy	libxfont1 – 1:0.99.0+cvs.20050909-1.3
	xserver-xorg-core – 6.8.2-77.3
	libfreetype6 – 2.1.7-2.4ubuntu1.3

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USN-448-1: X.org vulnerabilities

Details

Update instructions

Reduce your security exposure

References