USN-1395-1: PyPAM vulnerability
Ubuntu Security Notice USN-1395-1
8th March, 2012
python-pam vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS
Summary
PyPAM could be made to crash or possibly run programs if it processed a specially crafted password.
Software description
- python-pam - A Python interface to the PAM library
Details
Markus Vervier discovered that PyPAM incorrectly handled passwords
containing NULL bytes. An attacker could exploit this to cause applications
using PyPAM to crash, or possibly execute arbitrary code.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 11.10:
- python-pam 0.4.2-12.2ubuntu2.11.10.1
- Ubuntu 11.04:
- python-pam 0.4.2-12.2ubuntu2.11.04.1
- Ubuntu 10.10:
- python-pam 0.4.2-12.1ubuntu1.10.10.1
- Ubuntu 10.04 LTS:
- python-pam 0.4.2-12.1ubuntu1.10.04.1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart applications that use
PyPAM to make all the necessary changes.