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<?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>2014-06-25: 1</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 ">=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>
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