USN-2617-1: FUSE vulnerability

21 May 2015

fuse vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 15.04
  • Ubuntu 14.10
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS

Summary

FUSE could be made to overwrite files as the administrator.

Software Description

  • fuse - Filesystem in Userspace

Details

Tavis Ormandy discovered that FUSE incorrectly filtered environment variables. A local attacker could use this issue to gain administrative privileges.

Update instructions

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

Ubuntu 15.04
fuse - 2.9.2-4ubuntu4.15.04.1
Ubuntu 14.10
fuse - 2.9.2-4ubuntu4.14.10.1
Ubuntu 14.04 LTS
fuse - 2.9.2-4ubuntu4.14.04.1
Ubuntu 12.04 LTS
fuse - 2.8.6-2ubuntu2.1

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