<?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>2007-03-18</announced> <revised count="01">2007-03-18</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 ">=net-misc/ltsp-4.2-r1"</code> </resolution> <references> <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2450">CVE-2006-2450</uri> <uri link="https://www.gentoo.org/security/en/glsa/glsa-200608-05.xml">GLSA 200608-05</uri> </references> <metadata tag="requester" timestamp="2007-02-10T19:11:34Z"> falco </metadata> <metadata tag="bugReady" timestamp="2007-02-10T23:53:14Z"> falco </metadata> <metadata tag="submitter" timestamp="2007-02-27T02:25:26Z"> aetius </metadata> </glsa>