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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201706-27">
<title>FreeRADIUS: Security bypass</title>
<synopsis>A vulnerability in FreeRADIUS might allow remote attackers to
bypass authentication.
</synopsis>
<product type="ebuild">freeradius</product>
<announced>2017-06-27</announced>
<revised>2017-06-27: 1</revised>
<bug>620186</bug>
<access>remote</access>
<affected>
<package name="net-dialup/freeradius" auto="yes" arch="*">
<unaffected range="ge">3.0.14</unaffected>
<vulnerable range="lt">3.0.14</vulnerable>
</package>
</affected>
<background>
<p>FreeRADIUS is an open source RADIUS authentication server.</p>
</background>
<description>
<p>It was discovered that the implementation of TTLS and PEAP in FreeRADIUS
skips inner authentication when it handles a resumed TLS connection. The
affected versions of FreeRADIUS fails to reliably prevent the resumption
of unauthenticated sessions unless the TLS session cache is disabled
completely.
</p>
</description>
<impact type="normal">
<p>An unauthenticated remote user can bypass authentication by starting a
session, and then resuming an unauthenticated TLS session before inner
authentication has been completed successfully.
</p>
</impact>
<workaround>
<p>Set “enabled = no” in the cache subsection of eap module settings to
disable TLS session caching.
</p>
</workaround>
<resolution>
<p>All FreeRADIUS users should upgrade to the latest version:</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dialup/freeradius-3.0.14"
</code>
</resolution>
<references>
<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-9148">CVE-2017-9148</uri>
</references>
<metadata tag="requester" timestamp="2017-06-09T12:42:38Z">whissi</metadata>
<metadata tag="submitter" timestamp="2017-06-27T09:57:00Z">whissi</metadata>
</glsa>
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