USN-616-1: X.org vulnerabilities

Releases

• Ubuntu 8.04
• Ubuntu 7.10
• Ubuntu 7.04
• Ubuntu 6.06

Packages

• xorg-server -

Details

Multiple flaws were found in the RENDER, RECORD, and Security
extensions of X.org which did not correctly validate function arguments.
An authenticated attacker could send specially crafted requests and gain
root privileges or crash X. (CVE-2008-1377, CVE-2008-2360, CVE-2008-2361,
CVE-2008-2362)

It was discovered that the MIT-SHM extension of X.org did not correctly
validate the location of memory during an image copy. An authenticated
attacker could exploit this to read arbitrary memory locations within X,
exposing sensitive information. (CVE-2008-1379)

Update instructions

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

Ubuntu 8.04

• xserver-xorg-core - 2:1.4.1~git20080131-1ubuntu9.2

Ubuntu 7.10

• xserver-xorg-core - 2:1.3.0.0.dfsg-12ubuntu8.4

Ubuntu 7.04

• xserver-xorg-core - 2:1.2.0-3ubuntu8.4

Ubuntu 6.06

• xserver-xorg-core - 1:1.0.2-0ubuntu10.13

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

References

• CVE-2008-2362
• CVE-2008-2361
• CVE-2008-1377
• CVE-2008-2360
• CVE-2008-1379