Ubuntu 12.04 LTS / 14.04 LTS / 14.10 / 15.04 : unattended-upgrades vulnerability (USN-2657-1)

Medium Nessus Plugin ID 84444


The remote Ubuntu host is missing a security-related patch.


It was discovered that unattended-upgrades incorrectly performed authentication checks in certain configurations. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could potentially be used to install altered packages.

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 unattended-upgrades package.

Plugin Details

Severity: Medium

ID: 84444

File Name: ubuntu_USN-2657-1.nasl

Version: $Revision: 2.4 $

Type: local

Agent: unix

Published: 2015/06/29

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:unattended-upgrades, cpe:/o:canonical:ubuntu_linux:12.04:-:lts, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:14.10, 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: 2015/06/29

Reference Information

CVE: CVE-2015-1330

OSVDB: 124062

USN: 2657-1