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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200705-14">
<title>XScreenSaver: Privilege escalation</title>
<synopsis>
XScreenSaver allows local users to bypass authentication under certain
configurations.
</synopsis>
<product type="ebuild">xscreensaver</product>
<announced>2007-05-13</announced>
<revised>2007-05-13: 01</revised>
<bug>176584</bug>
<access>local</access>
<affected>
<package name="x11-misc/xscreensaver" auto="yes" arch="*">
<unaffected range="ge">5.02</unaffected>
<vulnerable range="lt">5.02</vulnerable>
</package>
</affected>
<background>
<p>
XScreenSaver is a widely used screen saver collection shipped on
systems running the X11 Window System.
</p>
</background>
<description>
<p>
XScreenSaver incorrectly handles the results of the getpwuid() function
in drivers/lock.c when using directory servers during a network outage.
</p>
</description>
<impact type="normal">
<p>
A local user can crash XScreenSaver by preventing network connectivity
if the system uses a remote directory service for credentials such as
NIS or LDAP, which will unlock the screen.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All XScreenSaver users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=x11-misc/xscreensaver-5.02"</code>
</resolution>
<references>
<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1859">CVE-2007-1859</uri>
</references>
<metadata tag="requester" timestamp="2007-05-08T10:52:36Z">
jaervosz
</metadata>
<metadata tag="submitter" timestamp="2007-05-08T15:43:15Z">
falco
</metadata>
<metadata tag="bugReady" timestamp="2007-05-13T21:32:41Z">
falco
</metadata>
</glsa>
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