Ubuntu Security Notice USN-2741-1
16th September, 2015
unity-settings-daemon vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 15.04
- Ubuntu 14.04 LTS
Summary
Unity Settings Daemon would allow mounting removable media while the screen
is locked.
Software description
- unity-settings-daemon
– daemon handling the Unity session settings
Details
It was discovered that the Unity Settings Daemon incorrectly allowed
removable media to be mounted when the screen is locked. If a vulnerability
were discovered in some other desktop component, such as an image library,
a local attacker could possibly use this issue to gain access to the
session.
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 15.04:
-
unity-settings-daemon
15.04.1+15.04.20150408-0ubuntu1.2
- Ubuntu 14.04 LTS:
-
unity-settings-daemon
14.04.0+14.04.20150825-0ubuntu2
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart your session to make
all the necessary changes.