Ubuntu Security Notice USN-1226-2
4th October, 2011
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.04
- Ubuntu 10.10
An attacker could trick cifs-utils into corrupting the system mtab file.
- cifs-utils - Common Internet File System utilities
Dan Rosenberg discovered that cifs-utils incorrectly handled changes to the
mtab file. A local attacker could use this issue to corrupt the mtab file,
possibly leading to a denial of service. (CVE-2011-1678)
Jan Lieskovsky discovered that cifs-utils incorrectly filtered certain
strings being added to the mtab file. A local attacker could use this issue
to corrupt the mtab file, possibly leading to a denial of service.
The problem can be corrected by updating your system to the following package version:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.