openSUSE Security Update : libxml2 (openSUSE-2016-583)

Medium Nessus Plugin ID 91147

Synopsis

The remote openSUSE host is missing a security update.

Description

This update for libxml2 fixes two security issues :

- libxml2 limits the number of recursions an XML document can contain so to protect against the 'Billion Laughs' denial-of-service attack. Unfortunately, the underlying counter was not incremented properly in all necessary locations. Therefore, specially crafted XML documents could exhaust all available stack space and crash the XML parser without running into the recursion limit.
This vulnerability has been fixed. (bsc#975947)

- When running in recovery mode, certain invalid XML documents would trigger an infinite recursion in libxml2 that ran until all stack space was exhausted. This vulnerability could have been used to facilitate a denial-of-sevice attack. (CVE-2016-3627, bsc#972335)

This update was imported from the SUSE:SLE-12:Update update project.

Solution

Update the affected libxml2 packages.

See Also

https://bugzilla.opensuse.org/show_bug.cgi?id=972335

https://bugzilla.opensuse.org/show_bug.cgi?id=975947

Plugin Details

Severity: Medium

ID: 91147

File Name: openSUSE-2016-583.nasl

Version: Revision: 2.3

Type: local

Agent: unix

Published: 2016/05/16

Updated: 2016/10/13

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5

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

CVSS v3.0

Base Score: 7.5

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

Vulnerability Information

CPE: p-cpe:/a:novell:opensuse:libxml2-2, p-cpe:/a:novell:opensuse:libxml2-2-32bit, p-cpe:/a:novell:opensuse:libxml2-2-debuginfo, p-cpe:/a:novell:opensuse:libxml2-2-debuginfo-32bit, p-cpe:/a:novell:opensuse:libxml2-debugsource, p-cpe:/a:novell:opensuse:libxml2-devel, p-cpe:/a:novell:opensuse:libxml2-devel-32bit, p-cpe:/a:novell:opensuse:libxml2-tools, p-cpe:/a:novell:opensuse:libxml2-tools-debuginfo, p-cpe:/a:novell:opensuse:python-libxml2, p-cpe:/a:novell:opensuse:python-libxml2-debuginfo, p-cpe:/a:novell:opensuse:python-libxml2-debugsource, cpe:/o:novell:opensuse:42.1

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

Patch Publication Date: 2016/05/13

Reference Information

CVE: CVE-2016-3627