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Ubuntu Security Notice USN-1676-1

Ubuntu Security Notice USN-1676-1
Posted Dec 19, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1676-1 - Dan Rosenberg discovered that the example AppArmor profile for chromium-browser could be escaped by calling xdg-settings with a crafted environment.

tags | advisory
systems | linux, ubuntu
MD5 | 8008ecef3e99057192c9a0174046f2ff

Ubuntu Security Notice USN-1676-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-1676-1
December 19, 2012

AppArmor update
============================================================================

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

- Ubuntu 12.04 LTS
- Ubuntu 11.10

Summary:

A weakness was discovered in the example AppArmor profile for
chromium-browser.

Software Description:
- apparmor: Linux security system

Details:

Dan Rosenberg discovered that the example AppArmor profile for
chromium-browser could be escaped by calling xdg-settings with a crafted
environment.

Update instructions:

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

Ubuntu 12.04 LTS:
apparmor-profiles 2.7.102-0ubuntu3.7

Ubuntu 11.10:
apparmor-profiles 2.7.0~beta1+bzr1774-1ubuntu2.2

In general, a standard system update will make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-1676-1
https://launchpad.net/bugs/1045986

Package Information:
https://launchpad.net/ubuntu/+source/apparmor/2.7.102-0ubuntu3.7

https://launchpad.net/ubuntu/+source/apparmor/2.7.0~beta1+bzr1774-1ubuntu2.2

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