USN-344-1: X.org vulnerabilities

Releases

• Ubuntu 6.06
• Ubuntu 5.10
• Ubuntu 5.04

Details

iDefense security researchers found several integer overflows in
X.org's font handling library. By using a specially crafted Type1 CID
font file, a local user could exploit these to crash the X server or
execute arbitrary code with root privileges.

Update instructions

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

Ubuntu 6.06

• libxfont1 - 1:1.0.0-0ubuntu3.2

Ubuntu 5.10

• libxfont1 - 1:0.99.0+cvs.20050909-1.2

Ubuntu 5.04

• libfs6 - 6.8.2-10.4
• xserver-xorg - 6.8.2-10.4

After a standard system upgrade you need to restart your X session to
effect the necessary changes.

References

• CVE-2006-3739
• CVE-2006-3740