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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200908-08">
<title>ISC DHCP: dhcpd Denial of Service</title>
<synopsis>
dhcpd as included in the ISC DHCP implementation does not properly handle
special conditions, leading to a Denial of Service.
</synopsis>
<product type="ebuild">dhcp</product>
<announced>August 18, 2009</announced>
<revised>August 18, 2009: 01</revised>
<bug>275231</bug>
<access>remote</access>
<affected>
<package name="net-misc/dhcp" auto="yes" arch="*">
<unaffected range="ge">3.1.2_p1</unaffected>
<vulnerable range="lt">3.1.2_p1</vulnerable>
</package>
</affected>
<background>
<p>
ISC DHCP is the reference implementation of the Dynamic Host
Configuration Protocol as specified in RFC 2131.
</p>
</background>
<description>
<p>
Christoph Biedl discovered that dhcpd does not properly handle certain
DHCP requests when configured both using "dhcp-client-identifier" and
"hardware ethernet".
</p>
</description>
<impact type="normal">
<p>
A remote attacker might send a specially crafted request to dhcpd,
possibly resulting in a Denial of Service (daemon crash).
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All ISC DHCP users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=net-misc/dhcp-3.1.2_p1&quot;</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1892">CVE-2009-1892</uri>
</references>
<metadata tag="requester" timestamp="Tue, 28 Jul 2009 17:01:31 +0000">
rbu
</metadata>
<metadata tag="submitter" timestamp="Tue, 04 Aug 2009 19:40:02 +0000">
a3li
</metadata>
<metadata tag="bugReady" timestamp="Wed, 05 Aug 2009 13:32:31 +0000">
a3li
</metadata>
</glsa>