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==========================================================================
Ubuntu Security Notice USN-3480-3
January 03, 2018

apport regression
==========================================================================

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

- Ubuntu 17.10
- Ubuntu 17.04
- Ubuntu 16.04 LTS

Summary:

USN-3480-2 introduced regressions in Apport.

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

Details:

USN-3480-2 fixed regressions in Apport. The update introduced a new
regression in the container support. This update addresses the problem.

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)

Update instructions:

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

Ubuntu 17.10:
  apport                          2.20.7-0ubuntu3.7

Ubuntu 17.04:
  apport                          2.20.4-0ubuntu4.10

Ubuntu 16.04 LTS:
  apport                          2.20.1-0ubuntu2.15

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

References:
  https://www.ubuntu.com/usn/usn-3480-3
  https://www.ubuntu.com/usn/usn-3480-1
  https://launchpad.net/bugs/1733366

Package Information:
  https://launchpad.net/ubuntu/+source/apport/2.20.7-0ubuntu3.7
  https://launchpad.net/ubuntu/+source/apport/2.20.4-0ubuntu4.10
  https://launchpad.net/ubuntu/+source/apport/2.20.1-0ubuntu2.15

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