Ubuntu Security Notice USN-2746-2
25th September, 2015
simplestreams regression
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 15.04
- Ubuntu 14.04 LTS
Summary
USN-2746-1 introduced a regression in Simple Streams.
Software description
- simplestreams
– Library and tools for using Simple Streams data
Details
USN-2746-1 fixed a vulnerability in Simple Streams. The update caused a
regression preventing MAAS from downloading PXE images. This update fixes
the problem.
We apologize for the inconvenience.
Original advisory details:
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 version:
- Ubuntu 15.04:
-
python-simplestreams
0.1.0~bzr354-0ubuntu1.15.04.2
-
simplestreams
0.1.0~bzr354-0ubuntu1.15.04.2
-
python-simplestreams-openstack
0.1.0~bzr354-0ubuntu1.15.04.2
-
python3-simplestreams
0.1.0~bzr354-0ubuntu1.15.04.2
- Ubuntu 14.04 LTS:
-
python-simplestreams
0.1.0~bzr341-0ubuntu2.3
-
simplestreams
0.1.0~bzr341-0ubuntu2.3
-
python-simplestreams-openstack
0.1.0~bzr341-0ubuntu2.3
-
python3-simplestreams
0.1.0~bzr341-0ubuntu2.3
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
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.