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Ubuntu Security Notice USN-1629-1

Ubuntu Security Notice USN-1629-1
Posted Nov 13, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1629-1 - 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.

tags | advisory, remote, arbitrary
systems | linux, ubuntu
advisories | CVE-2012-4504, CVE-2012-4505
SHA-256 | 2968459de6c88dc6181d4d9051c736f11dd989c514cf37bee924e54a846b2ca1

Ubuntu Security Notice USN-1629-1

Change Mirror Download
============================================================================
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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