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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200703-19">
<title>LTSP: Authentication bypass in included LibVNCServer code</title>
<synopsis>
LTSP includes a version of libVNCServer that is vulnerable to an
authentication bypass.
</synopsis>
<product type="ebuild">ltsp</product>
<announced>March 18, 2007</announced>
<revised>March 18, 2007: 01</revised>
<bug>142661</bug>
<access>remote</access>
<affected>
<package name="net-misc/ltsp" auto="yes" arch="*">
<unaffected range="ge">4.2-r1</unaffected>
<vulnerable range="lt">4.2-r1</vulnerable>
</package>
</affected>
<background>
<p>
The Linux Terminal Server Project adds thin-client support to Linux
servers.
</p>
</background>
<description>
<p>
The LTSP server includes vulnerable LibVNCServer code, which fails to
properly validate protocol types effectively letting users decide what
protocol to use, such as "Type 1 - None" (GLSA-200608-05). The LTSP VNC
server will accept this security type, even if it is not offered by the
server.
</p>
</description>
<impact type="high">
<p>
An attacker could exploit this vulnerability to gain unauthorized
access with the privileges of the user running the VNC server.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All LTSP users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=net-misc/ltsp-4.2-r1&quot;</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2450">CVE-2006-2450</uri>
<uri link="/security/en/glsa/glsa-200608-05.xml">GLSA 200608-05</uri>
</references>
<metadata tag="requester" timestamp="Sat, 10 Feb 2007 19:11:34 +0000">
falco
</metadata>
<metadata tag="bugReady" timestamp="Sat, 10 Feb 2007 23:53:14 +0000">
falco
</metadata>
<metadata tag="submitter" timestamp="Tue, 27 Feb 2007 02:25:26 +0000">
aetius
</metadata>
</glsa>