Amazon Linux AMI : libxml2 Denial of Service (ALAS-2012-52)

This script is Copyright (C) 2013 Tenable Network Security, Inc.


Synopsis :

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

Description :

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.

See also :

http://www.nessus.org/u?ddc8c9aa

Solution :

Run 'yum update libxml2' to update your system.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P)

Family: Amazon Linux Local Security Checks

Nessus Plugin ID: 69659 ()

Bugtraq ID:

CVE ID: CVE-2012-0841