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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.
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.
https://ubuntu.com/security/notices/USN-1668-1
https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/1045986
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