USN-2746-1: Simple Streams vulnerability

24 September 2015

simplestreams vulnerability

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

  • Ubuntu 15.04
  • Ubuntu 14.04 LTS


Applications using Simple Streams could be made to crash or run programs if it received specially crafted network traffic.

Software Description

  • simplestreams - Library and tools for using Simple Streams data


It was discovered that Simple Streams did not properly perform gpg verification in some situations. A remote attacker could use this to perform a man-in-the-middle attack and inject malicious content into the stream.

Update instructions

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

Ubuntu 15.04
python-simplestreams - 0.1.0~bzr354-0ubuntu1.15.04.1
python-simplestreams-openstack - 0.1.0~bzr354-0ubuntu1.15.04.1
python3-simplestreams - 0.1.0~bzr354-0ubuntu1.15.04.1
simplestreams - 0.1.0~bzr354-0ubuntu1.15.04.1
Ubuntu 14.04 LTS
python-simplestreams - 0.1.0~bzr341-0ubuntu2.2
python-simplestreams-openstack - 0.1.0~bzr341-0ubuntu2.2
python3-simplestreams - 0.1.0~bzr341-0ubuntu2.2
simplestreams - 0.1.0~bzr341-0ubuntu2.2

To update your system, please follow these instructions:

After a standard system update you need to restart any services that make use of python-simplestreams or python3-simplestreams to make all the necessary changes.