71 lines
2.6 KiB
XML
71 lines
2.6 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="201110-19">
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<title>X.Org X Server: Multiple vulnerabilities</title>
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<synopsis>Multiple vulnerabilities in the X.Org X server might allow local
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attackers to disclose information.
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</synopsis>
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<product type="ebuild">xorg-server</product>
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<announced>October 22, 2011</announced>
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<revised>October 22, 2011: 2</revised>
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<bug>387069</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="rge">1.9.5-r1</unaffected>
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<unaffected range="ge">1.10.4-r1</unaffected>
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<vulnerable range="lt">1.10.4-r1</vulnerable>
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</package>
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</affected>
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<background>
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<p>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>vladz reported the following vulnerabilities in the X.Org X server:</p>
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<ul>
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<li>The X.Org X server follows symbolic links when trying to access the
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lock file for a X display, showing a predictable behavior depending on
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the file type of the link target (CVE-2011-4028).
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</li>
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<li>The X.Org X server lock file mechanism allows for a race condition to
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cause the X server to modify the file permissions of an arbitrary file
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to 0444 (CVE-2011-4029).
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</li>
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</ul>
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</description>
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<impact type="normal">
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<p>A local attacker could exploit these vulnerabilities to disclose
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information by making arbitrary files on a system world-readable or gain
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information whether a specified file exists on the system and whether it
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is a file, directory, or a named pipe.
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</p>
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</impact>
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<workaround>
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<p>There is no known workaround at this time.</p>
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</workaround>
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<resolution>
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<p>All X.Org X Server 1.9 users should upgrade to the latest 1.9 version:</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=x11-base/xorg-server-1.9.5-r1"
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</code>
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<p>All X.Org X Server 1.10 users should upgrade to the latest version:</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=x11-base/xorg-server-1.10.4-r1"
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</code>
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</resolution>
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<references>
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<uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4028">CVE-2011-4028</uri>
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<uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4029">CVE-2011-4029</uri>
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</references>
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<metadata timestamp="Thu, 13 Oct 2011 20:53:51 +0000" tag="requester">a3li</metadata>
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<metadata timestamp="Sat, 22 Oct 2011 17:19:57 +0000" tag="submitter">a3li</metadata>
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</glsa>
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