glsa-201709-04.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201709-04">
  <title>mod_gnutls: Certificate validation error</title>
  <synopsis>A vulnerability in mod_gnutls allows remote attackers to spoof
    clients via crafted certificates.
  </synopsis>
  <product type="ebuild">mod_gnutls</product>
  <announced>2017-09-17</announced>
  <revised count="1">2017-09-17</revised>
  <bug>541038</bug>
  <access>remote</access>
  <affected>
    <package name="www-apache/mod_gnutls" auto="yes" arch="*">
      <unaffected range="ge">0.7.3</unaffected>
      <vulnerable range="lt">0.7.3</vulnerable>
    </package>
  </affected>
  <background>
    <p>mod_gnutls is an extension for Apache’s httpd. It uses the
      GnuTLS library to provide HTTPS. It supports some protocols and
      features that mod_ssl does not.
    </p>
    
  </background>
  <description>
    <p>It was discovered that the authentication hook in mod_gnutls does not
      validate client’s certificates even when option
      “GnuTLSClientVerify” is set to “require”.
    </p>
  </description>
  <impact type="normal">
    <p>A remote attacker could present a crafted certificate and spoof clients
      data.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All mod_gnutls users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=www-apache/mod_gnutls-0.7.3"
    </code>
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-2091">
      CVE-2015-2091
    </uri>
  </references>
  <metadata tag="requester" timestamp="2017-06-17T21:37:14Z">whissi</metadata>
  <metadata tag="submitter" timestamp="2017-09-17T15:43:18Z">chrisadr</metadata>
</glsa>