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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200411-07">
<title>Proxytunnel: Format string vulnerability</title>
<synopsis>
Proxytunnel is vulnerable to a format string vulnerability, potentially
allowing a remote server to execute arbitrary code with the rights of the
Proxytunnel process.
</synopsis>
<product type="ebuild">Proxytunnel</product>
<announced>November 03, 2004</announced>
<revised>November 03, 2004: 01</revised>
<bug>69379</bug>
<access>remote</access>
<affected>
<package name="net-misc/proxytunnel" auto="yes" arch="*">
<unaffected range="ge">1.2.3</unaffected>
<vulnerable range="lt">1.2.3</vulnerable>
</package>
</affected>
<background>
<p>
Proxytunnel is a program that tunnels connections to a remote server
through a standard HTTPS proxy.
</p>
</background>
<description>
<p>
Florian Schilhabel of the Gentoo Linux Security Audit project found a
format string vulnerability in Proxytunnel. When the program is started in
daemon mode (-a [port]), it improperly logs invalid proxy answers to
syslog.
</p>
</description>
<impact type="normal">
<p>
A malicious remote server could send specially-crafted invalid answers to
exploit the format string vulnerability, potentially allowing the execution
of arbitrary code on the tunnelling host with the rights of the Proxytunnel
process.
</p>
</impact>
<workaround>
<p>
You can mitigate the issue by only allowing connections to trusted remote
servers.
</p>
</workaround>
<resolution>
<p>
All Proxytunnel users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/proxytunnel-1.2.3"</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0992">CAN-2004-0992</uri>
<uri link="http://proxytunnel.sourceforge.net/news.html">Proxytunnel News</uri>
</references>
<metadata tag="requester" timestamp="Tue, 2 Nov 2004 21:56:56 +0000">
koon
</metadata>
<metadata tag="submitter" timestamp="Wed, 3 Nov 2004 09:32:39 +0000">
koon
</metadata>
<metadata tag="bugReady" timestamp="Wed, 3 Nov 2004 14:02:21 +0000">
koon
</metadata>
</glsa>