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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200608-23">
<title>Heartbeat: Denial of Service</title>
<synopsis>
Heartbeat is vulnerable to a Denial of Service which can be triggered by a
remote attacker without authentication.
</synopsis>
<product type="ebuild">heartbeat</product>
<announced>August 24, 2006</announced>
<revised>September 22, 2006: 02</revised>
<bug>141894</bug>
<access>remote</access>
<affected>
<package name="sys-cluster/heartbeat" auto="yes" arch="*">
<unaffected range="ge">2.0.7</unaffected>
<unaffected range="rge">1.2.5</unaffected>
<vulnerable range="lt">2.0.7</vulnerable>
</package>
</affected>
<background>
<p>
Heartbeat is a component of the High-Availability Linux project. It is
used to perform death-of-node detection, communications and cluster
management.
</p>
</background>
<description>
<p>
Yan Rong Ge discovered that the peel_netstring() function in
cl_netstring.c does not validate the "length" parameter of user input,
which can lead to an out-of-bounds memory access when processing
certain Heartbeat messages (CVE-2006-3121). Furthermore an unspecified
local DoS issue was fixed (CVE-2006-3815).
</p>
</description>
<impact type="normal">
<p>
By sending a malicious UDP Heartbeat message, even before
authentication, a remote attacker can crash the master control process
of the cluster.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All Heartbeat users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose sys-cluster/heartbeat</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3121">CVE-2006-3121</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3815">CVE-2006-3815</uri>
</references>
<metadata tag="requester" timestamp="Sat, 19 Aug 2006 16:22:39 +0000">
jaervosz
</metadata>
<metadata tag="submitter" timestamp="Mon, 21 Aug 2006 14:22:38 +0000">
falco
</metadata>
<metadata tag="bugReady" timestamp="Wed, 23 Aug 2006 14:19:23 +0000">
falco
</metadata>
</glsa>