Amazon Linux AMI : libxml2 (ALAS-2012-52)

medium Nessus Plugin ID 69659
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The remote Amazon Linux AMI host is missing a security update.


It was found that the hashing routine used by libxml2 arrays was susceptible to predictable hash collisions. Sending a specially crafted message to an XML service could result in longer processing time, which could lead to a denial of service. To mitigate this issue, randomization has been added to the hashing function to reduce the chance of an attacker successfully causing intentional collisions.


Run 'yum update libxml2' to update your system.

See Also

Plugin Details

Severity: Medium

ID: 69659

File Name: ala_ALAS-2012-52.nasl

Version: 1.8

Type: local

Agent: unix

Published: 9/4/2013

Updated: 4/18/2018

Dependencies: ssh_get_info.nasl

Risk Information


Risk Factor: Low

Score: 2.7


Risk Factor: Medium

Base Score: 5

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:libxml2, p-cpe:/a:amazon:linux:libxml2-debuginfo, p-cpe:/a:amazon:linux:libxml2-devel, p-cpe:/a:amazon:linux:libxml2-python, p-cpe:/a:amazon:linux:libxml2-static, cpe:/o:amazon:linux

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Patch Publication Date: 3/4/2012

Reference Information

CVE: CVE-2012-0841

ALAS: 2012-52

RHSA: 2012:0324