[USN-1629-1] libproxy vulnerabilities

Marc Deslauriers marc.deslauriers at canonical.com
Mon Nov 12 16:20:13 UTC 2012

Ubuntu Security Notice USN-1629-1
November 12, 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


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

Software Description:
- 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 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

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

  CVE-2012-4504, CVE-2012-4505

Package Information:

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