Ubuntu 8.04 LTS / 10.04 LTS / 10.10 / 11.04 : apt vulnerabilities (USN-1215-1)

High Nessus Plugin ID 56281


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


It was discovered that the apt-key utility incorrectly verified GPG keys when downloaded via the net-update option. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could potentially be used to install altered packages. This update corrects the issue by disabling the net-update option completely. A future update will re-enable the option with corrected verification.

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 apt package.

Plugin Details

Severity: High

ID: 56281

File Name: ubuntu_USN-1215-1.nasl

Version: $Revision: 1.5 $

Type: local

Agent: unix

Published: 2011/09/23

Modified: 2016/05/26

Dependencies: 12634

Risk Information

Risk Factor: High

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:apt, cpe:/o:canonical:ubuntu_linux:10.04:-:lts, cpe:/o:canonical:ubuntu_linux:10.10, cpe:/o:canonical:ubuntu_linux:11.04, cpe:/o:canonical:ubuntu_linux:8.04:-:lts

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

Patch Publication Date: 2011/09/22

Reference Information

OSVDB: 75675

USN: 1215-1