USN-1629-1: libproxy vulnerabilities

Ubuntu Security Notice USN-1629-1

12th November, 2012

libproxy vulnerabilities

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

  • Ubuntu 12.04 LTS
  • Ubuntu 11.10
  • Ubuntu 10.04 LTS

Summary

libproxy could be made to crash or run programs if it received specially crafted network traffic.

Software description

  • libproxy - automatic proxy configuration management library

Details

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 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.

References

CVE-2012-4504, CVE-2012-4505