Ubuntu 14.04 LTS / 15.04 : simplestreams regression (USN-2746-2)

Medium Nessus Plugin ID 86185


The remote Ubuntu host is missing one or more security-related patches.


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.

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.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Update the affected packages.

Plugin Details

Severity: Medium

ID: 86185

File Name: ubuntu_USN-2746-2.nasl

Version: $Revision: 2.3 $

Type: local

Agent: unix

Published: 2015/09/28

Modified: 2016/05/24

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:python-simplestreams, p-cpe:/a:canonical:ubuntu_linux:python-simplestreams-openstack, p-cpe:/a:canonical:ubuntu_linux:python3-simplestreams, p-cpe:/a:canonical:ubuntu_linux:simplestreams, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:15.04

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2015/09/25

Reference Information

OSVDB: 128174

USN: 2746-2