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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200909-15">
<title>Lynx: Arbitrary command execution</title>
<synopsis>
An incomplete fix for an issue related to the Lynx URL handler might allow
for the remote execution of arbitrary commands.
</synopsis>
<product type="ebuild">lynx</product>
<announced>September 12, 2009</announced>
<revised>September 12, 2009: 01</revised>
<bug>243058</bug>
<access>remote</access>
<affected>
<package name="www-client/lynx" auto="yes" arch="*">
<unaffected range="ge">2.8.6-r4</unaffected>
<vulnerable range="lt">2.8.6-r4</vulnerable>
</package>
</affected>
<background>
<p>
Lynx is a fully-featured WWW client for users running
cursor-addressable, character-cell display devices such as vt100
terminals and terminal emulators.
</p>
</background>
<description>
<p>
Clint Ruoho reported that the fix for CVE-2005-2929 (GLSA 200511-09)
only disabled the lynxcgi:// handler when not using the advanced mode.
</p>
</description>
<impact type="normal">
<p>
A remote attacker can entice a user to access a malicious HTTP server,
causing Lynx to execute arbitrary commands. NOTE: The advanced mode is
not enabled by default. Successful exploitation requires the
"lynxcgi://" protocol to be registered with lynx on the victim's
system.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All Lynx users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=www-client/lynx-2.8.6-r4&quot;</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2929">CVE-2005-2929</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4690">CVE-2008-4690</uri>
<uri link="/security/en/glsa/glsa-200511-09.xml">GLSA 200511-09</uri>
</references>
<metadata tag="requester" timestamp="Fri, 07 Aug 2009 11:47:31 +0000">
rbu
</metadata>
<metadata tag="submitter" timestamp="Fri, 28 Aug 2009 08:16:43 +0000">
a3li
</metadata>
<metadata tag="bugReady" timestamp="Mon, 31 Aug 2009 03:37:19 +0000">
a3li
</metadata>
</glsa>