A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 ESM
Bazaar could be made run programs as your login if it opened a
specially crafted URL.
- bzr: easy to use distributed version control system
USN-3411-1 fixed a vulnerability in Bazaar. This update
provides the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
Adam Collard discovered that Bazaar did not properly handle host names
in 'bzr+ssh://' URLs. A remote attacker could use this to construct
a bazaar repository URL that when accessed could run arbitrary code
with the privileges of the user.
The problem can be corrected by updating your system to the following