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