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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200702-05">
  <title>Fail2ban: Denial of Service</title>
  <synopsis>
    A flaw in Fail2ban may allow remote attackers to deny access to arbitrary
    hosts.
  </synopsis>
  <product type="ebuild">fail2ban</product>
  <announced>2007-02-16</announced>
  <revised>2007-02-16: 01</revised>
  <bug>157166</bug>
  <access>remote</access>
  <affected>
    <package name="net-analyzer/fail2ban" auto="yes" arch="*">
      <unaffected range="ge">0.6.2</unaffected>
      <vulnerable range="lt">0.6.2</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    Fail2ban monitors log files for failed authentication attempts and can
    block hosts responsible for repeated attacks.
    </p>
  </background>
  <description>
    <p>
    A flaw in the method used to parse log entries allows remote,
    unauthenticated attackers to forge authentication attempts from other
    hosts.
    </p>
  </description>
  <impact type="normal">
    <p>
    A remote attacker can add arbitrary hosts to the block list, denying
    legitimate users access to a resource.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All Fail2ban users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=net-analyzer/fail2ban-0.6.2"</code>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-6302">CVE-2006-6302</uri>
  </references>
  <metadata tag="requester" timestamp="2007-02-12T22:35:11Z">
    falco
  </metadata>
  <metadata tag="bugReady" timestamp="2007-02-12T22:42:08Z">
    falco
  </metadata>
  <metadata tag="submitter" timestamp="2007-02-12T22:56:35Z">
    taviso
  </metadata>
</glsa>