Ubuntu 8.04 LTS / 10.04 LTS / 11.04 / 11.10 / 12.04 LTS : dbus regressions (USN-1576-2)

Medium Nessus Plugin ID 62434


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


USN-1576-1 fixed vulnerabilities in DBus. The update caused a regression for certain services launched from the activation helper, and caused an unclean shutdown on upgrade. This update fixes the problem.

We apologize for the inconvenience.

Sebastian Krahmer discovered that DBus incorrectly handled environment variables when running with elevated privileges. A local attacker could possibly exploit this flaw with a setuid binary and gain root privileges.

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 dbus and / or libdbus-1-3 packages.

Plugin Details

Severity: Medium

ID: 62434

File Name: ubuntu_USN-1576-2.nasl

Version: $Revision: 1.6 $

Type: local

Agent: unix

Published: 2012/10/05

Modified: 2016/05/25

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 6.9

Temporal Score: 5.4

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:dbus, p-cpe:/a:canonical:ubuntu_linux:libdbus-1-3, cpe:/o:canonical:ubuntu_linux:10.04:-:lts, cpe:/o:canonical:ubuntu_linux:11.04, cpe:/o:canonical:ubuntu_linux:11.10, cpe:/o:canonical:ubuntu_linux:12.04:-:lts, cpe:/o:canonical:ubuntu_linux:8.04:-:lts

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2012/10/04

Exploitable With

Core Impact

Reference Information

CVE: CVE-2012-3524

BID: 55517

USN: 1576-2