Amazon Linux AMI : libxml2 Multiple Vulnerabilities (ALAS-2012-134)

This script is Copyright (C) 2013-2014 Tenable Network Security, Inc.


Synopsis :

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

Description :

Multiple integer overflow flaws, leading to heap-based buffer
overflows, were found in the way libxml2 handled documents that enable
entity expansion. A remote attacker could provide a large, specially
crafted XML file that, when opened in an application linked against
libxml2, would cause the application to crash or, potentially, execute
arbitrary code with the privileges of the user running the
application. (CVE-2012-2807)

A one byte buffer overflow was found in the way libxml2 evaluated
certain parts of XML Pointer Language (XPointer) expressions. A remote
attacker could provide a specially crafted XML file that, when opened
in an application linked against libxml2, would cause the application
to crash or, potentially, execute arbitrary code with the privileges
of the user running the application. (CVE-2011-3102)

See also :

http://www.nessus.org/u?be54ebb4

Solution :

Run 'yum update libxml2' to update your system.

Risk factor :

Medium / CVSS Base Score : 6.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P)

Family: Amazon Linux Local Security Checks

Nessus Plugin ID: 69624 ()

Bugtraq ID:

CVE ID: CVE-2011-3102
CVE-2012-2807