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Ubuntu 11.10 : lightdm vulnerabilities (USN-1262-1)

low Nessus Plugin ID 56854

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Synopsis

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

Description

It was discovered that Light Display Manager incorrectly handled privileges when reading .dmrc files. A local attacker could exploit this issue to read arbitrary configuration files, bypassing intended permissions. (CVE-2011-3153)

It was discovered that Light Display Manager incorrectly handled links when adjusting permissions on .Xauthority files. A local attacker could exploit this issue to access arbitrary files, and possibly obtain increased privileges. In the default Ubuntu installation, this would be prevented by the Yama link restrictions. (CVE-2011-4105).

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.

Solution

Update the affected liblightdm-gobject-1-0, liblightdm-qt-1-0 and / or lightdm packages.

See Also

https://usn.ubuntu.com/1262-1/

Plugin Details

Severity: Low

ID: 56854

File Name: ubuntu_USN-1262-1.nasl

Version: 1.13

Type: local

Agent: unix

Published: 11/16/2011

Updated: 9/19/2019

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 1.9

Temporal Score: 1.4

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:lightdm, p-cpe:/a:canonical:ubuntu_linux:liblightdm-qt-1-0, p-cpe:/a:canonical:ubuntu_linux:liblightdm-gobject-1-0, cpe:/o:canonical:ubuntu_linux:11.10

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/15/2011

Vulnerability Publication Date: 2/17/2012

Reference Information

CVE: CVE-2011-3153, CVE-2011-4105

BID: 50511, 50685, 50688

USN: 1262-1