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USN-1629-1: libproxy vulnerabilities

12 November 2012

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)

Update instructions

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

Ubuntu 12.04
Ubuntu 11.10
Ubuntu 10.04

After a standard system update you need to restart your session to make
all the necessary changes.