USN-1963-1: usb-creator vulnerability

18 September 2013

usb-creator vulnerability

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

  • Ubuntu 13.04
  • Ubuntu 12.10
  • Ubuntu 12.04 LTS

Summary

usb-creator could be tricked into bypassing polkit authorizations.

Software Description

  • usb-creator - create a startup disk using a CD or disc image

Details

It was discovered that usb-creator was using polkit in an unsafe manner. A local attacker could possibly use this issue to bypass intended polkit authorizations.

Update instructions

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

Ubuntu 13.04
usb-creator-common - 0.2.47.1
Ubuntu 12.10
usb-creator-common - 0.2.40ubuntu2
Ubuntu 12.04 LTS
usb-creator-common - 0.2.38.2

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to reboot your computer to make all the necessary changes.

References