Ubuntu Security Notice USN-1045-1
19th January, 2011
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 10.10
- Ubuntu 10.04 LTS
- Ubuntu 9.10
- Ubuntu 8.04 LTS
It was discovered that FUSE could be tricked into incorrectly updating the
mtab file when mounting filesystems. A local attacker, with access to use
FUSE, could unmount arbitrary locations, leading to a denial of service.
The problem can be corrected by updating your system to the following package version:
- Ubuntu 10.10:
- fuse-utils 2.8.4-1ubuntu1.1
- Ubuntu 10.04 LTS:
- fuse-utils 2.8.1-1.1ubuntu2.2
- Ubuntu 9.10:
- fuse-utils 2.7.4-1.1ubuntu4.4
- Ubuntu 8.04 LTS:
- fuse-utils 2.7.2-1ubuntu2.2
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.