USN-985-1: mountall vulnerability

Ubuntu Security Notice USN-985-1

8th September, 2010

mountall vulnerability

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

  • Ubuntu 10.04 LTS


Local root escalation via writable udev rules.

Software description

  • mountall - filesystem mounting tool


Alasdair MacGregor discovered that mountall created a udev rule file
with world-writable permissions. A local attacker could exploit this
under certain conditions to cause udev to execute arbitrary commands as
the root user.

Update instructions

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

Ubuntu 10.04 LTS:
mountall 2.15.2

To update your system, please follow these instructions:

In general, a standard system update will make all the necessary changes.