glsa-201706-27.xml


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55

<?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 count="1">2017-06-27</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 "&gt;=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>