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<?xml version="1.0" encoding="UTF-8"?>
<glsa id="201406-03">
<title>Fail2ban: Multiple vulnerabilities</title>
<synopsis>Multiple vulnerabilities have been found in Fail2ban, the worst of
which allows remote attackers to cause a Denial of Service condition.
<product type="ebuild">fail2ban</product>
<announced>June 01, 2014</announced>
<revised>June 01, 2014: 1</revised>
<package name="net-analyzer/fail2ban" auto="yes" arch="*">
<unaffected range="ge">0.8.12</unaffected>
<vulnerable range="lt">0.8.12</vulnerable>
<p>Fail2ban is a tool for parsing log files and banning IP addresses which
show suspicious behavior.
<p>Multiple vulnerabilities have been discovered in Fail2ban. Please review
the CVE identifiers referenced below for details.
<impact type="normal">
<p>A remote attacker could send a crafted URL to a web site which, when
parsed by Fail2ban, would deny a specific IP address. Also, errors in
regular expressions within certain filters can cause arbitrary IP
addresses to be banned. Furthermore, a local attacker could perform
symlink attacks to overwrite arbitrary files with the privileges of the
user running the application.
<p>There is no known workaround at this time.</p>
<p>All Fail2ban users should upgrade to the latest version:</p>
# emerge --sync
# emerge --ask --oneshot --verbose "&gt;=net-analyzer/fail2ban-0.8.12
<uri link="">CVE-2009-5023</uri>
<uri link="">CVE-2013-2178</uri>
<uri link="">CVE-2013-7176</uri>
<metadata tag="requester" timestamp="Fri, 07 Oct 2011 23:37:06 +0000">craig</metadata>
<metadata tag="submitter" timestamp="Sun, 01 Jun 2014 15:17:17 +0000">