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Ubuntu: Security update for apport

Dan Rosenberg discovered that an application running under an AppArmor profile that allowed unconfined execution of apport-bug could escape confinement by calling apport-bug with a crafted environment. While not a vulnerability in apport itself, this update mitigates the issue by sanitizing certain variables in the apport-bug shell script.

Updated packages are available from security.ubuntu.com.

==========================================================================
Ubuntu Security Notice USN-1668-1
December 17, 2012

apport update
==========================================================================

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

- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 10.04 LTS

Summary:

A hardening measure was added to apport.

Software Description:
- apport: automatically generate crash reports for debugging

Details:

Dan Rosenberg discovered that an application running under an AppArmor
profile that allowed unconfined execution of apport-bug could escape
confinement by calling apport-bug with a crafted environment. While not a
vulnerability in apport itself, this update mitigates the issue by
sanitizing certain variables in the apport-bug shell script.

Update instructions:

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

Ubuntu 12.04 LTS:
 apport                          2.0.1-0ubuntu15.1

Ubuntu 11.10:
 apport                          1.23-0ubuntu4.1

Ubuntu 10.04 LTS:
 apport                          1.13.3-0ubuntu2.2

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

References:
 http://www.ubuntu.com/usn/usn-1668-1
 https://launchpad.net/bugs/1045986

Package Information:
 https://launchpad.net/ubuntu/+source/apport/2.0.1-0ubuntu15.1
 https://launchpad.net/ubuntu/+source/apport/1.23-0ubuntu4.1
 https://launchpad.net/ubuntu/+source/apport/1.13.3-0ubuntu2.2
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