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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200705-09">
<title>IPsec-Tools: Denial of Service</title>
<synopsis>
IPsec-Tools contains a vulnerability that allows a remote attacker to crash
the IPsec tunnel.
</synopsis>
<product type="ebuild">ipsec-tools</product>
<announced>May 08, 2007</announced>
<revised>May 08, 2007: 01</revised>
<bug>173219</bug>
<access>remote</access>
<affected>
<package name="net-firewall/ipsec-tools" auto="yes" arch="*">
<unaffected range="ge">0.6.7</unaffected>
<vulnerable range="lt">0.6.7</vulnerable>
</package>
</affected>
<background>
<p>
IPsec-Tools is a port of KAME's implementation of the IPsec utilities.
It contains a collection of network monitoring tools, including racoon,
ping, and ping6.
</p>
</background>
<description>
<p>
The isakmp_info_recv() function in src/racoon/isakmp_inf.c does not
always check that DELETE (ISAKMP_NPTYPE_D) and NOTIFY (ISAKMP_NPTYPE_N)
packets are encrypted.
</p>
</description>
<impact type="normal">
<p>
A remote attacker could send a specially crafted IPsec message to one
of the two peers during the beginning of phase 1, resulting in the
termination of the IPsec exchange.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All IPsec-Tools users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=net-firewall/ipsec-tools-0.6.7&quot;</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1841">CVE-2007-1841</uri>
</references>
<metadata tag="requester" timestamp="Thu, 03 May 2007 18:53:19 +0000">
jaervosz
</metadata>
<metadata tag="submitter" timestamp="Sun, 06 May 2007 12:07:13 +0000">
falco
</metadata>
<metadata tag="bugReady" timestamp="Mon, 07 May 2007 19:54:14 +0000">
vorlon
</metadata>
</glsa>