Otkriveno je nekoliko sigurnosnih propusta u paketu libxml2 koji mogu rezultirati udaljenim izvođenjem DoS napada i pokretanjem proizvoljnog programskog koda.
Svi propusti su povezani s greškama u upravljanju memorijom, a očituju se kao cjelobrojno prepisivanje ili čitanje s pogrešnih lokacija u memoriji.
Posljedica:
Udaljeni napadač može iskoristiti propuste slanjem XML datoteke s posebno oblikovanim XPath izrazom. Posljedice napada su rušenje aplikacije (DoS napad) i pokretanje proizvoljnog programskog koda.
Rješenje:
Svim korisnicima se savjetuje korištenje nadogradnje koja otklanja opisane propuste.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 201110-26
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: High
Title: libxml2: Multiple vulnerabilities
Date: October 26, 2011
Bugs: #345555, #370715, #386985
ID: 201110-26
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis
========
Multiple vulnerabilities were found in libxml2 which could lead to
execution of arbitrary code or a Denial of Service.
Background
==========
libxml2 is the XML C parser and toolkit developed for the Gnome
project.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-libs/libxml2 < 2.7.8-r3 >= 2.7.8-r3
Description
===========
Multiple vulnerabilities have been discovered in libxml2. Please review
the CVE identifiers referenced below for details.
Impact
======
A local or remote attacker may be able to execute arbitrary code with
the privileges of the application or cause a Denial of Service.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All libxml2 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libxml2-2.7.8-r3"
References
==========
[ 1 ] CVE-2010-4008
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-4008
[ 2 ] CVE-2010-4494
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-4494
[ 3 ] CVE-2011-1944
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1944
[ 4 ] CVE-2011-2821
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2821
[ 5 ] CVE-2011-2834
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2834
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-201110-26.xml
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite. or alternatively, you may file a bug at
https://bugs.gentoo.org.
License
=======
Copyright 2011 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
Posljednje sigurnosne preporuke