Ubuntu Security Notice USN-1629-1
12th November, 2012
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 10.04 LTS
libproxy could be made to crash or run programs if it received specially crafted network traffic.
- libproxy - automatic proxy configuration management library
Tomas Mraz discovered that libproxy incorrectly handled certain PAC files.
A remote attacker could use this issue to cause libproxy to crash, or to
possibly execute arbitrary code. (CVE-2012-4504, CVE-2012-4505)
The problem can be corrected by updating your system to the following package version:
- Ubuntu 12.04 LTS:
- libproxy1 0.4.7-0ubuntu4.1
- Ubuntu 11.10:
- libproxy0 0.3.1-2ubuntu6.1
- Ubuntu 10.04 LTS:
- libproxy0 0.3.1-1ubuntu1.1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart your session to make
all the necessary changes.