gentoo-overlay/metadata/glsa/glsa-202007-21.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202007-21">
  <title>Libreswan: Denial of service</title>
  <synopsis>A vulnerability in Libreswan could lead to a Denial of Service
    condition.
  </synopsis>
  <product type="ebuild">libreswan</product>
  <announced>2020-07-27</announced>
  <revised count="1">2020-07-27</revised>
  <bug>722696</bug>
  <access>remote</access>
  <affected>
    <package name="net-vpn/libreswan" auto="yes" arch="*">
      <unaffected range="ge">3.32</unaffected>
      <vulnerable range="lt">3.32</vulnerable>
    </package>
  </affected>
  <background>
    <p>Libreswan is a free software implementation of the most widely supported
      and standarized VPN protocol based on (“IPsec”) and the Internet Key
      Exchange (“IKE”).
    </p>
  </background>
  <description>
    <p>As a result of a bug in handling certain bogus encrypted IKEv1, while
      building a log message that the packet has been dropped, a NULL pointer
      dereference causes Libreswan to crash and restart when it attempts to log
      the state name involved.
    </p>
  </description>
  <impact type="normal">
    <p>An attacker could cause a possible Denial of Service condition.</p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All Libreswan users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=net-vpn/libreswan-3.32"
    </code>
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-1763">CVE-2020-1763</uri>
  </references>
  <metadata tag="requester" timestamp="2020-07-26T15:11:54Z">sam_c</metadata>
  <metadata tag="submitter" timestamp="2020-07-27T00:05:28Z">sam_c</metadata>
</glsa>