USN-2275-1: DBus vulnerabilities
Ubuntu Security Notice USN-2275-1
8th July, 2014
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 LTS
- Ubuntu 13.10
- Ubuntu 12.04 LTS
Several security issues were fixed in DBus.
- dbus - simple interprocess messaging system
Alban Crequy discovered that dbus-daemon incorrectly sent AccessDenied
errors to the service instead of the client when enforcing permissions. A
local user can use this issue to possibly deny access to the service.
Alban Crequy discovered that dbus-daemon incorrectly handled certain file
descriptors. A local attacker could use this issue to cause services or
clients to disconnect, resulting in a denial of service. (CVE-2014-3532,
The problem can be corrected by updating your system to the following package version:
- Ubuntu 14.04 LTS:
- dbus 1.6.18-0ubuntu4.1
- libdbus-1-3 1.6.18-0ubuntu4.1
- Ubuntu 13.10:
- dbus 1.6.12-0ubuntu10.1
- libdbus-1-3 1.6.12-0ubuntu10.1
- Ubuntu 12.04 LTS:
- dbus 1.4.18-1ubuntu1.5
- libdbus-1-3 1.4.18-1ubuntu1.5
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make all
the necessary changes.