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==========================================================================
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

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 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.

References:
  http://www.ubuntu.com/usn/usn-1629-1
  CVE-2012-4504, CVE-2012-4505

Package Information:
  https://launchpad.net/ubuntu/+source/libproxy/0.4.7-0ubuntu4.1
  https://launchpad.net/ubuntu/+source/libproxy/0.3.1-2ubuntu6.1
  https://launchpad.net/ubuntu/+source/libproxy/0.3.1-1ubuntu1.1



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