[USN-1576-2] DBus regressions

Marc Deslauriers marc.deslauriers at canonical.com
Thu Oct 4 12:33:16 UTC 2012

Ubuntu Security Notice USN-1576-2
October 04, 2012

dbus regressions

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

- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS


DBus could be made to run programs as an administrator.

Software Description:
- dbus: simple interprocess messaging system


USN-1576-1 fixed vulnerabilities in DBus. The update caused a regression
for certain services launched from the activation helper, and caused an
unclean shutdown on upgrade. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

 Sebastian Krahmer discovered that DBus incorrectly handled environment
 variables when running with elevated privileges. A local attacker could
 possibly exploit this flaw with a setuid binary and gain root privileges.

Update instructions:

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

Ubuntu 12.04 LTS:
  dbus                            1.4.18-1ubuntu1.3
  libdbus-1-3                     1.4.18-1ubuntu1.3

Ubuntu 11.10:
  dbus                            1.4.14-1ubuntu1.3
  libdbus-1-3                     1.4.14-1ubuntu1.3

Ubuntu 11.04:
  dbus                            1.4.6-1ubuntu6.4
  libdbus-1-3                     1.4.6-1ubuntu6.4

Ubuntu 10.04 LTS:
  dbus                            1.2.16-2ubuntu4.7
  libdbus-1-3                     1.2.16-2ubuntu4.7

Ubuntu 8.04 LTS:
  dbus                            1.1.20-1ubuntu3.9
  libdbus-1-3                     1.1.20-1ubuntu3.9

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


Package Information:

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