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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201810-09">
<title>X.Org X Server: Privilege escalation</title>
<synopsis>A vulnerability in X.Org X Server allows local users to escalate
privileges.
</synopsis>
<product type="ebuild">xorg x server</product>
<announced>2018-10-30</announced>
<revised count="1">2018-10-30</revised>
<bug>669588</bug>
<access>local</access>
<affected>
<package name="x11-base/xorg-server" auto="yes" arch="*">
<unaffected range="ge">1.20.3</unaffected>
<vulnerable range="lt">1.20.3</vulnerable>
</package>
</affected>
<background>
<p>The X Window System is a graphical windowing system based on a
client/server model.
</p>
</background>
<description>
<p>An incorrect permission check for -modulepath and -logfile options when
starting Xorg. X server allows unprivileged users with the ability to log
in to the system via physical console to escalate their privileges and
run arbitrary code under root privileges.
</p>
</description>
<impact type="high">
<p>A local attacker can escalate privileges to root by passing crafted
parameters to the X.org X server.
</p>
</impact>
<workaround>
<p>There is no known workaround at this time.</p>
</workaround>
<resolution>
<p>All X.Org X Server users should upgrade to the latest version:</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=x11-base/xorg-server-1.20.3"
</code>
</resolution>
<references>
<uri link="https://nvd.nist.gov/vuln/detail/CVE-2018-14665">CVE-2018-14665</uri>
</references>
<metadata tag="requester" timestamp="2018-10-30T15:53:55Z">whissi</metadata>
<metadata tag="submitter" timestamp="2018-10-30T20:42:13Z">whissi</metadata>
</glsa>
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