USN-2362-1: Bash vulnerability
Ubuntu Security Notice USN-2362-1
24th September, 2014
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS
Bash allowed bypassing environment restrictions in certain environments.
- bash - GNU Bourne Again SHell
Stephane Chazelas discovered that Bash incorrectly handled trailing code in
function definitions. An attacker could use this issue to bypass
environment restrictions, such as SSH forced command environments.
The problem can be corrected by updating your system to the following package version:
- Ubuntu 14.04 LTS:
- bash 4.3-7ubuntu1.1
- Ubuntu 12.04 LTS:
- bash 4.2-2ubuntu2.2
- Ubuntu 10.04 LTS:
- bash 4.1-2ubuntu3.1
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.