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+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
+<glsa id="200707-13">
+ <title>Fail2ban: Denial of service</title>
+ <synopsis>
+ Fail2ban is vulnerable to a Denial of Service attack.
+ </synopsis>
+ <product type="ebuild">fail2ban</product>
+ <announced>2007-07-28</announced>
+ <revised count="02">2008-01-09</revised>
+ <bug>181214</bug>
+ <access>remote</access>
+ <affected>
+ <package name="net-analyzer/fail2ban" auto="yes" arch="*">
+ <unaffected range="ge">0.8.0-r1</unaffected>
+ <vulnerable range="lt">0.8.0-r1</vulnerable>
+ </package>
+ </affected>
+ <background>
+ <p>
+ Fail2ban is a tool for parsing log files and banning IP addresses which
+ make too many password failures.
+ </p>
+ </background>
+ <description>
+ <p>
+ A vulnerability has been discovered in Fail2ban when parsing log files.
+ </p>
+ </description>
+ <impact type="normal">
+ <p>
+ A remote attacker could send specially crafted SSH login banners to the
+ vulnerable host, which would prevent any ssh connection to the host and
+ result in a Denial of Service.
+ </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-0.8.0-r1"</code>
+ </resolution>
+ <references>
+ <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4321">CVE-2007-4321</uri>
+ <uri link="http://www.ossec.net/en/attacking-loganalysis.html#fail2ban">Original advisory</uri>
+ </references>
+ <metadata tag="requester" timestamp="2007-07-03T22:02:25Z">
+ aetius
+ </metadata>
+ <metadata tag="submitter" timestamp="2007-07-15T18:12:05Z">
+ p-y
+ </metadata>
+ <metadata tag="bugReady" timestamp="2007-07-15T18:13:27Z">
+ p-y
+ </metadata>
+</glsa>