[ GLSA 200604-03 ] FreeRADIUS: Authentication bypass in EAP-MSCHAPv2
Date: Tue, 04 Apr 2006 20:57:33 +0200
From: Matthias Geerdsen <vorlon@gentoo.org.>
To: gentoo-announce@lists.gentoo.org
Subject: [ GLSA 200604-03 ] FreeRADIUS: Authentication bypass in EAP-MSCHAPv2
module
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Gentoo Linux Security Advisory GLSA 200604-03
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http://security.gentoo.org/
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Severity: Normal
Title: FreeRADIUS: Authentication bypass in EAP-MSCHAPv2 module
Date: April 04, 2006
Bugs: #127229
ID: 200604-03
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Synopsis
========
The EAP-MSCHAPv2 module of FreeRADIUS is affected by a validation issue
which causes some authentication checks to be bypassed.
Background
==========
FreeRADIUS is an open source RADIUS authentication server
implementation.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-dialup/freeradius < 1.1.1 >= 1.1.1
< 1.0.0
Description
===========
FreeRADIUS suffers from insufficient input validation in the
EAP-MSCHAPv2 state machine.
Impact
======
An attacker could cause the server to bypass authentication checks by
manipulating the EAP-MSCHAPv2 client state machine.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All FreeRADIUS users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dialup/freeradius-1.1.1"
References
==========
[ 1 ] CVE-2006-1354
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1354
[ 2 ] FreeRADIUS Vulnerability Notifications
http://www.freeradius.org/security.html
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200604-03.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 2006 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/2.0
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