RHEL 5 : libxml2 (RHSA-2012:0104)

critical Nessus Plugin ID 64026

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Synopsis

The remote Red Hat host is missing a security update for libxml2.

Description

The remote Redhat Enterprise Linux 5 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2012:0104 advisory.

The libxml2 library is a development toolbox providing the implementation of various XML standards.

A heap-based buffer overflow flaw was found in the way libxml2 decoded entity references with long names. 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-2011-3919)

All users of libxml2 are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. The desktop must be restarted (log out, then log back in) for this update to take effect.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL libxml2 package based on the guidance in RHSA-2012:0104.

Plugin Details

Severity: Critical

ID: 64026

File Name: redhat-RHSA-2012-0104.nasl

Version: 1.15

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 1/24/2013

Updated: 11/4/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2011-3919

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:libxml2-python, cpe:/o:redhat:rhel_eus:5.6, p-cpe:/a:redhat:enterprise_linux:libxml2-devel, p-cpe:/a:redhat:enterprise_linux:libxml2

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2/8/2012

Vulnerability Publication Date: 1/7/2012

Reference Information

CVE: CVE-2011-3919

BID: 51300

CWE: 122

RHSA: 2012:0104

Detections

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