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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200707-14">
<title>tcpdump: Integer overflow</title>
<synopsis>
A vulnerability has been discovered in tcpdump, allowing for the execution
of arbitrary code, possibly with root privileges.
</synopsis>
<product type="ebuild">tcpdump</product>
<announced>July 28, 2007</announced>
<revised>July 28, 2007: 01</revised>
<bug>184815</bug>
<access>remote</access>
<affected>
<package name="net-analyzer/tcpdump" auto="yes" arch="*">
<unaffected range="ge">3.9.5-r3</unaffected>
<vulnerable range="lt">3.9.5-r3</vulnerable>
</package>
</affected>
<background>
<p>
tcpdump is a tool for capturing and inspecting network traffic.
</p>
</background>
<description>
<p>
mu-b from Digital Labs discovered that the return value of a snprintf()
call is not properly checked before being used. This could lead to an
integer overflow.
</p>
</description>
<impact type="high">
<p>
A remote attacker could send specially crafted BGP packets on a network
being monitored with tcpdump, possibly resulting in the execution of
arbitrary code with the privileges of the user running tcpdump, which
is usually root.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All tcpdump users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=net-analyzer/tcpdump-3.9.5-r3&quot;</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3798">CVE-2007-3798</uri>
</references>
<metadata tag="requester" timestamp="Sat, 14 Jul 2007 22:01:53 +0000">
p-y
</metadata>
<metadata tag="submitter" timestamp="Tue, 17 Jul 2007 18:00:19 +0000">
p-y
</metadata>
<metadata tag="bugReady" timestamp="Tue, 17 Jul 2007 18:48:59 +0000">
p-y
</metadata>
</glsa>