Simple Streams (simplestreams) does not properly verify the GPG signatures of disk image files, which allows remote mirror servers to spoof disk images and have unspecified other impact via a 403 (aka Forbidden) response.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1337
Reference (s):
- https://bugs.launchpad.net/ubuntu/%2Bsource/simplestreams/%2Bbug/1487004
- UBUNTU:USN-2746-1
- URL: http://www.ubuntu.com/usn/USN-2746-1
- UBUNTU:USN-2746-2
- URL: http://www.ubuntu.com/usn/USN-2746-2