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<?xml version="1.0" encoding="UTF-8"?>
<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.
<product type="ebuild">denyhost</product>
<announced>June 25, 2014</announced>
<revised>June 25, 2014: 1</revised>
<package name="app-admin/denyhosts" auto="yes" arch="*">
<unaffected range="ge">2.6-r9</unaffected>
<vulnerable range="lt">2.6-r9</vulnerable>
<p>DenyHosts is a script intended to be run by Linux system administrators
to help thwart SSH server attacks.
<p>DenyHosts does not properly define the regular expressions used when
parsing SSH authentication logs.
<impact type="normal">
<p>A remote attacker could possibly cause a Denial of Service condition via
a crafted login name.
<p>There is no known workaround at this time.</p>
<p>All DenyHost users should upgrade to the latest version:</p>
# emerge --sync
# emerge --ask --oneshot --verbose "&gt;=app-admin/denyhosts-2.6-r9"
<uri link="">CVE-2013-6890</uri>
<metadata tag="requester" timestamp="Mon, 16 Jun 2014 04:56:45 +0000">
<metadata tag="submitter" timestamp="Wed, 25 Jun 2014 20:54:12 +0000">Zlogene</metadata>