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+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
+<glsa id="200710-16">
+  <title>X.Org X server: Composite local privilege escalation</title>
+  <synopsis>
+    A vulnerability has been discovered in the Composite extension of the X.Org
+    X server, allowing for a local privilege escalation.
+  </synopsis>
+  <product type="ebuild">X.Org</product>
+  <announced>2007-10-14</announced>
+  <revised count="01">2007-10-14</revised>
+  <bug>191964</bug>
+  <access>local</access>
+  <affected>
+    <package name="x11-base/xorg-server" auto="yes" arch="*">
+      <unaffected range="ge">1.3.0.0-r1</unaffected>
+      <vulnerable range="lt">1.3.0.0-r1</vulnerable>
+    </package>
+  </affected>
+  <background>
+    <p>
+    The X Window System is a graphical windowing system based on a
+    client/server model.
+    </p>
+  </background>
+  <description>
+    <p>
+    Aaron Plattner discovered a buffer overflow in the compNewPixmap()
+    function when copying data from a large pixel depth pixmap into a
+    smaller pixel depth pixmap.
+    </p>
+  </description>
+  <impact type="high">
+    <p>
+    A local attacker could execute arbitrary code with the privileges of
+    the user running the X server, typically root.
+    </p>
+  </impact>
+  <workaround>
+    <p>
+    Disable the Composite extension by setting ' Option "Composite"
+    "disable" ' in the Extensions section of xorg.conf.
+    </p>
+    <p>
+    Note: This could affect the functionality of some applications.
+    </p>
+  </workaround>
+  <resolution>
+    <p>
+    All X.Org X server users should upgrade to the latest version:
+    </p>
+    <code>
+    # emerge --sync
+    # emerge --ask --oneshot --verbose "&gt;=x11-base/xorg-server-1.3.0.0-r1"</code>
+  </resolution>
+  <references>
+    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4730">CVE-2007-4730</uri>
+  </references>
+  <metadata tag="requester" timestamp="2007-10-02T20:35:12Z">
+    p-y
+  </metadata>
+  <metadata tag="bugReady" timestamp="2007-10-02T20:35:33Z">
+    p-y
+  </metadata>
+  <metadata tag="submitter" timestamp="2007-10-08T00:30:05Z">
+    rbu
+  </metadata>
+</glsa>