From vorlon@gentoo.org Tue Apr 4 14:57:55 2006 From: Matthias Geerdsen To: gentoo-announce@lists.gentoo.org Cc: full-disclosure@lists.grok.org.uk, bugtraq@securityfocus.com, security-alerts@linuxsecurity.com Date: Tue, 04 Apr 2006 20:57:33 +0200 Subject: [Full-disclosure] [ GLSA 200604-03 ] FreeRADIUS: Authentication bypass in EAP-MSCHAPv2 module - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200604-03 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: FreeRADIUS: Authentication bypass in EAP-MSCHAPv2 module Date: April 04, 2006 Bugs: #127229 ID: 200604-03 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 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 [ Part 1.2, "OpenPGP digital signature" Application/PGP-SIGNATURE ] [ 266bytes. ] [ Unable to print this part. ] [ Part 2: "Attached Text" ] _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/