<?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 count="01">2007-05-13</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>