Ubuntu 8.04 LTS / 10.04 LTS / 11.10 / 12.04 LTS / 12.10 : libxml2 vulnerability (USN-1656-1)

Medium Nessus Plugin ID 63165


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


It was discovered that libxml2 had a heap-based buffer underflow when parsing entities. If a user or automated system were tricked into processing a specially crafted XML document, applications linked against libxml2 could be made to crash or possibly execute arbitrary code.

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 libxml2 package.

Plugin Details

Severity: Medium

ID: 63165

File Name: ubuntu_USN-1656-1.nasl

Version: $Revision: 1.9 $

Type: local

Agent: unix

Published: 2012/12/06

Modified: 2016/05/25

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 6.8

Temporal Score: 5.9

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libxml2, cpe:/o:canonical:ubuntu_linux:10.04:-:lts, cpe:/o:canonical:ubuntu_linux:11.10, cpe:/o:canonical:ubuntu_linux:12.04:-:lts, cpe:/o:canonical:ubuntu_linux:12.10, cpe:/o:canonical:ubuntu_linux:8.04:-:lts

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: 2012/12/05

Reference Information

CVE: CVE-2012-5134

BID: 56684

OSVDB: 87882

USN: 1656-1