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Sicherheit: Denial of Service in IPSec
Aktuelle Meldungen Distributionen
Name: Denial of Service in IPSec
ID: 200905-03
Distribution: Gentoo
Plattformen: Keine Angabe
Datum: So, 24. Mai 2009, 15:27
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1574
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1632
Applikationen: IPSec

Originalnachricht


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Gentoo Linux Security Advisory GLSA 200905-03
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http://security.gentoo.org/
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Severity: Normal
Title: IPSec Tools: Denial of Service
Date: May 24, 2009
Bugs: #267135
ID: 200905-03

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Synopsis
========

Multiple errors in the IPSec Tools racoon daemon might allow remote
attackers to cause a Denial of Service.

Background
==========

The IPSec Tools are a port of KAME's IPsec utilities to the Linux-2.6
IPsec implementation. They include racoon, an Internet Key Exchange
daemon for automatically keying IPsec connections.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-firewall/ipsec-tools < 0.7.2 >=3D 0.7.2

Description
===========

The following vulnerabilities have been found in the racoon daemon as
shipped with IPSec Tools:

* Neil Kettle reported that racoon/isakmp_frag.c is prone to a
null-pointer dereference (CVE-2009-1574).

* Multiple memory leaks exist in (1) the eay_check_x509sign()
function in racoon/crypto_openssl.c and (2) racoon/nattraversal.c
(CVE-2009-1632).

Impact
======

A remote attacker could send specially crafted fragmented ISAKMP
packets without a payload or exploit vectors related to X.509
certificate authentication and NAT traversal, possibly resulting in a
crash of the racoon daemon.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All IPSec Tools users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose
">=3Dnet-firewall/ipsec-tools-0.7.2"

References
==========

[ 1 ] CVE-2009-1574
http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2009-1574
[ 2 ] CVE-2009-1632
http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2009-1632

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200905-03.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
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2009 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

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