Ubuntu Security Notice USN-2609-1
21st May, 2015
apport vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 15.04
- Ubuntu 14.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary
Apport could be tricked into creating arbitrary files as an administrator,
resulting in privilege escalation.
Software description
- apport
– automatically generate crash reports for debugging
Details
Sander Bos discovered that Apport incorrectly handled permissions when
the system was configured to generate core dumps for setuid binaries. A
local attacker could use this issue to gain elevated privileges.
(CVE-2015-1324)
Philip Pettersson discovered that Apport contained race conditions
resulting core dumps to be generated with incorrect permissions in
arbitrary locations. A local attacker could use this issue to gain elevated
privileges. (CVE-2015-1325)
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 15.04:
-
apport
2.17.2-0ubuntu1.1
- Ubuntu 14.10:
-
apport
2.14.7-0ubuntu8.5
- Ubuntu 14.04 LTS:
-
apport
2.14.1-0ubuntu3.11
- Ubuntu 12.04 LTS:
-
apport
2.0.1-0ubuntu17.9
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.