USN-1077-1: FUSE vulnerabilities

28 February 2011

fuse vulnerabilities

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

Summary

Software Description

  • fuse

Details

It was discovered that FUSE would incorrectly follow symlinks when checking mountpoints under certain conditions. A local attacker, with access to use FUSE, could unmount arbitrary locations, leading to a denial of service.

Update instructions

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

Ubuntu 10.10
fuse-utils - 2.8.4-1ubuntu1.3
Ubuntu 10.04 LTS
fuse-utils - 2.8.1-1.1ubuntu3.1
Ubuntu 9.10
fuse-utils - 2.7.4-1.1ubuntu4.5
Ubuntu 8.04 LTS
fuse-utils - 2.7.2-1ubuntu2.3

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.

References