USN-1127-1: usb-creator vulnerability

2 May 2011

usb-creator vulnerability

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

  • Ubuntu 11.04
  • Ubuntu 10.10
  • Ubuntu 10.04 LTS

Summary

An attacker could use usb-creator to unmount arbitrary disks or perform other unauthorized disk operations.

Software Description

  • usb-creator - create a startup disk using a CD or disc image (common files)

Details

Evan Broder discovered that usb-creator did not properly enforce restrictions when performing privileged disk operations. A local attacker could use this flaw to perform certain disk operations, such as unmount arbitrary mountpoints.

Update instructions

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

Ubuntu 11.04
usb-creator-common - 0.2.28.3
Ubuntu 10.10
usb-creator-common - 0.2.25.3
Ubuntu 10.04 LTS
usb-creator-common - 0.2.22.3

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