72 lines
2.6 KiB
XML
72 lines
2.6 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<?xml-stylesheet href="/xsl/glsa.xsl" type="text/xsl"?>
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<?xml-stylesheet href="/xsl/guide.xsl" type="text/xsl"?>
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<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
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<glsa id="200404-03">
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<title>Tcpdump Vulnerabilities in ISAKMP Parsing</title>
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<synopsis>
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There are multiple vulnerabilities in tcpdump and libpcap related to
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parsing of ISAKMP packets.
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</synopsis>
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<product type="ebuild">tcpdump</product>
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<announced>March 31, 2004</announced>
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<revised>March 31, 2004: 01</revised>
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<bug>38206</bug>
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<bug>46258</bug>
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<access>remote</access>
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<affected>
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<package name="net-analyzer/tcpdump" auto="yes" arch="*">
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<unaffected range="ge">3.8.3-r1</unaffected>
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<vulnerable range="le">3.8.1</vulnerable>
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</package>
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<package name="net-libs/libpcap" auto="yes" arch="*">
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<unaffected range="ge">0.8.3-r1</unaffected>
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<vulnerable range="le">0.8.1-r1</vulnerable>
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</package>
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</affected>
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<background>
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<p>
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Tcpdump is a program for monitoring IP network traffic. Libpcap is a
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supporting library which is responsibile for capturing packets off a network
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interface.
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</p>
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</background>
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<description>
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<p>
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There are two specific vulnerabilities in tcpdump, outlined in [ reference
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1 ]. In the first scenario, an attacker may send a specially-crafted ISAKMP
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Delete packet which causes tcpdump to read past the end of its buffer. In
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the second scenario, an attacker may send an ISAKMP packet with the wrong
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payload length, again causing tcpdump to read past the end of a buffer.
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</p>
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</description>
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<impact type="high">
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<p>
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Remote attackers could potentially cause tcpdump to crash or execute
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arbitrary code as the 'pcap' user.
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</p>
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</impact>
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<workaround>
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<p>
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There is no known workaround at this time. All tcpdump users are encouraged
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to upgrade to the latest available version.
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</p>
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</workaround>
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<resolution>
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<p>
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All tcpdump users should upgrade to the latest available version.
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ADDITIONALLY, the net-libs/libpcap package should be upgraded.
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</p>
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<code>
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# emerge sync
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# emerge -pv ">=net-libs/libpcap-0.8.3-r1" ">=net-analyzer/tcpdump-3.8.3-r1"
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# emerge ">=net-libs/libpcap-0.8.3-r1" ">=net-analyzer/tcpdump-3.8.3-r1"</code>
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</resolution>
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<references>
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<uri link="http://www.rapid7.com/advisories/R7-0017.html">Rapid7 Advisory</uri>
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<uri link="http://rhn.redhat.com/errata/RHSA-2004-008.html">Red Hat Security Advisory</uri>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0989">CVE Advisory</uri>
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</references>
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</glsa>
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