USN-3480-1 introduced regressions in Apport.
USN-3480-1 fixed vulnerabilities in Apport. The fix for CVE-2017-14177 introduced a regression in the ability to handle crashes for users that configured their systems to use the Upstart init system in Ubuntu 16.04 LTS and Ubuntu 17.04. The fix for CVE-2017-14180 temporarily disabled crash forwarding to containers. This update addresses the problems.
20 November 2017
A security issue affects these releases of Ubuntu and its derivatives:
USN-3480-1 introduced regressions in Apport.
USN-3480-1 fixed vulnerabilities in Apport. The fix for CVE-2017-14177 introduced a regression in the ability to handle crashes for users that configured their systems to use the Upstart init system in Ubuntu 16.04 LTS and Ubuntu 17.04. The fix for CVE-2017-14180 temporarily disabled crash forwarding to containers. This update addresses the problems.
We apologize for the inconvenience.
Original advisory details:
Sander Bos discovered that Apport incorrectly handled core dumps for setuid binaries. A local attacker could use this issue to perform a denial of service via resource exhaustion or possibly gain root privileges. (CVE-2017-14177)
Sander Bos discovered that Apport incorrectly handled core dumps for processes in a different PID namespace. A local attacker could use this issue to perform a denial of service via resource exhaustion or possibly gain root privileges. (CVE-2017-14180)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
Vulmon