USN-182-1: X server vulnerability
Ubuntu Security Notice USN-182-1
12th September, 2005
xorg, xfree86 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 5.04
- Ubuntu 4.10
A local privilege escalation vulnerability has been discovered in the
pixmap allocation handling of the X server. By allocating a huge
pixmap, a local user could trigger an integer overflow that resulted
in a memory allocation that was too small for the requested pixmap.
This resulted in a buffer overflow which could eventually be exploited
to execute arbitrary code with full root privileges.
The problem can be corrected by updating your system to the following package version:
- Ubuntu 5.04:
- Ubuntu 4.10:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.