blob: 7045319f6a25ecdc475658e7cb259cd569d17b56 [file] [log] [blame]
<?xml version="1.0" encoding="UTF-8"?>
<glsa id="201110-19">
<title>X.Org X Server: Multiple vulnerabilities</title>
<synopsis>Multiple vulnerabilities in the X.Org X server might allow local
attackers to disclose information.
<product type="ebuild">xorg-server</product>
<announced>October 22, 2011</announced>
<revised>October 22, 2011: 2</revised>
<package name="x11-base/xorg-server" auto="yes" arch="*">
<unaffected range="rge">1.9.5-r1</unaffected>
<unaffected range="ge">1.10.4-r1</unaffected>
<vulnerable range="lt">1.10.4-r1</vulnerable>
<p>The X Window System is a graphical windowing system based on a
client/server model.
<p>vladz reported the following vulnerabilities in the X.Org X server:</p>
<li>The X.Org X server follows symbolic links when trying to access the
lock file for a X display, showing a predictable behavior depending on
the file type of the link target (CVE-2011-4028).
<li>The X.Org X server lock file mechanism allows for a race condition to
cause the X server to modify the file permissions of an arbitrary file
to 0444 (CVE-2011-4029).
<impact type="normal">
<p>A local attacker could exploit these vulnerabilities to disclose
information by making arbitrary files on a system world-readable or gain
information whether a specified file exists on the system and whether it
is a file, directory, or a named pipe.
<p>There is no known workaround at this time.</p>
<p>All X.Org X Server 1.9 users should upgrade to the latest 1.9 version:</p>
# emerge --sync
# emerge --ask --oneshot --verbose "&gt;=x11-base/xorg-server-1.9.5-r1"
<p>All X.Org X Server 1.10 users should upgrade to the latest version:</p>
# emerge --sync
# emerge --ask --oneshot --verbose "&gt;=x11-base/xorg-server-1.10.4-r1"
<uri link="">CVE-2011-4028</uri>
<uri link="">CVE-2011-4029</uri>
<metadata timestamp="Thu, 13 Oct 2011 20:53:51 +0000" tag="requester">a3li</metadata>
<metadata timestamp="Sat, 22 Oct 2011 17:19:57 +0000" tag="submitter">a3li</metadata>