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Ubuntu Security Notice USN-2744-1
September 24, 2015

apport vulnerability

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

• Ubuntu 15.04
• Ubuntu 14.04 LTS
• Ubuntu 12.04 LTS

Summary:

Apport could be made to crash or overwrite files as an administrator.

Software Description:

• apport: automatically generate crash reports for debugging

Details:

Halfdog discovered that Apport incorrectly handled kernel crash dump files.
A local attacker could use this issue to cause a denial of service, or
possibly elevate privileges. The default symlink protections for affected
releases should reduce the vulnerability to a denial of service.

Update instructions:

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

Ubuntu 15.04:
apport 2.17.2-0ubuntu1.5

Ubuntu 14.04 LTS:
apport 2.14.1-0ubuntu3.15

Ubuntu 12.04 LTS:
apport 2.0.1-0ubuntu17.10

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

References:
http://www.ubuntu.com/usn/usn-2744-1
CVE-2015-1338

Package Information:
https://launchpad.net/ubuntu/+source/apport/2.17.2-0ubuntu1.5
https://launchpad.net/ubuntu/+source/apport/2.14.1-0ubuntu3.15
https://launchpad.net/ubuntu/+source/apport/2.0.1-0ubuntu17.10

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