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<?xml version="1.0" encoding="utf-8"?>
<glsa id="200604-03">
<title>FreeRADIUS: Authentication bypass in EAP-MSCHAPv2 module</title>
The EAP-MSCHAPv2 module of FreeRADIUS is affected by a validation issue
which causes some authentication checks to be bypassed.
<product type="ebuild">freeradius</product>
<announced>April 04, 2006</announced>
<revised>April 04, 2006: 01</revised>
<package name="net-dialup/freeradius" auto="yes" arch="*">
<unaffected range="ge">1.1.1</unaffected>
<unaffected range="lt">1.0.0</unaffected>
<vulnerable range="lt">1.1.1</vulnerable>
FreeRADIUS is an open source RADIUS authentication server
FreeRADIUS suffers from insufficient input validation in the
EAP-MSCHAPv2 state machine.
<impact type="normal">
An attacker could cause the server to bypass authentication checks
by manipulating the EAP-MSCHAPv2 client state machine.
There is no known workaround at this time.
All FreeRADIUS users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=net-dialup/freeradius-1.1.1&quot;</code>
<uri link="">CVE-2006-1354</uri>
<uri link="">FreeRADIUS Vulnerability Notifications</uri>
<metadata tag="requester" timestamp="Sat, 01 Apr 2006 10:41:34 +0000">
<metadata tag="bugReady" timestamp="Sat, 01 Apr 2006 10:42:20 +0000">
<metadata tag="submitter" timestamp="Sat, 01 Apr 2006 23:30:58 +0000">