Ubuntu 13.04 : lightdm vulnerability (USN-1950-1)

Low Nessus Plugin ID 69862


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


It was discovered that Light Display Manager created .Xauthority files with incorrect permissions. A local attacker could use this flaw to bypass access restrictions.

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 lightdm package.

Plugin Details

Severity: Low

ID: 69862

File Name: ubuntu_USN-1950-1.nasl

Version: $Revision: 1.5 $

Type: local

Agent: unix

Published: 2013/09/13

Modified: 2016/05/25

Dependencies: 12634

Risk Information

Risk Factor: Low


Base Score: 2.1

Temporal Score: 1.8

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:lightdm, cpe:/o:canonical:ubuntu_linux:13.04

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: 2013/09/12

Reference Information

CVE: CVE-2013-4331

BID: 62329

USN: 1950-1