glsa-200604-03.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200604-03">
  <title>FreeRADIUS: Authentication bypass in EAP-MSCHAPv2 module</title>
  <synopsis>
    The EAP-MSCHAPv2 module of FreeRADIUS is affected by a validation issue
    which causes some authentication checks to be bypassed.
  </synopsis>
  <product type="ebuild">freeradius</product>
  <announced>2006-04-04</announced>
  <revised count="01">2006-04-04</revised>
  <bug>127229</bug>
  <access>remote</access>
  <affected>
    <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>
    </package>
  </affected>
  <background>
    <p>
    FreeRADIUS is an open source RADIUS authentication server
    implementation.
    </p>
  </background>
  <description>
    <p>
    FreeRADIUS suffers from insufficient input validation in the
    EAP-MSCHAPv2 state machine.
    </p>
  </description>
  <impact type="normal">
    <p>
    An attacker could cause the server to bypass authentication checks
    by manipulating the EAP-MSCHAPv2 client state machine.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All FreeRADIUS users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=net-dialup/freeradius-1.1.1"</code>
  </resolution>
  <references>
    <uri link="https://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1354">CVE-2006-1354</uri>
    <uri link="https://www.freeradius.org/security.html">FreeRADIUS Vulnerability Notifications</uri>
  </references>
  <metadata tag="requester" timestamp="2006-04-01T10:41:34Z">
    koon
  </metadata>
  <metadata tag="bugReady" timestamp="2006-04-01T10:42:20Z">
    koon
  </metadata>
  <metadata tag="submitter" timestamp="2006-04-01T23:30:58Z">
    vorlon078
  </metadata>
</glsa>