<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201406-23">
  <title>DenyHosts: Denial of service</title>
  <synopsis>A vulnerability in DenyHosts could allow a remote attacker to
    create a Denial of Service condition.
  </synopsis>
  <product type="ebuild">denyhost</product>
  <announced>2014-06-25</announced>
  <revised count="1">2014-06-25</revised>
  <bug>495130</bug>
  <access>remote</access>
  <affected>
    <package name="app-admin/denyhosts" auto="yes" arch="*">
      <unaffected range="ge">2.6-r9</unaffected>
      <vulnerable range="lt">2.6-r9</vulnerable>
    </package>
  </affected>
  <background>
    <p>DenyHosts is a script intended to be run by Linux system administrators
      to help thwart SSH server attacks.
    </p>
  </background>
  <description>
    <p>DenyHosts does not properly define the regular expressions used when
      parsing SSH authentication logs.
    </p>
  </description>
  <impact type="normal">
    <p>A remote attacker could possibly cause a Denial of Service condition via
      a crafted login name.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All DenyHost users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=app-admin/denyhosts-2.6-r9"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-6890">CVE-2013-6890</uri>
  </references>
  <metadata tag="requester" timestamp="2014-06-16T04:56:45Z">
    BlueKnight
  </metadata>
  <metadata tag="submitter" timestamp="2014-06-25T20:54:12Z">Zlogene</metadata>
</glsa>
