(OpenBSD Issues Fix) X11 Overflows Let Local Users Gain Root Privileges
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SecurityTracker Alert ID: 1017877 |
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SecurityTracker URL: http://securitytracker.com/id/1017877
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CVE Reference:
CVE-2007-1003, CVE-2007-1351, CVE-2007-1352
(Links to External Site)
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Date: Apr 5 2007
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Impact:
Execution of arbitrary code via local system, Root access via local system, User access via local system
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 7.2 and prior versions
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Description:
Several vulnerabilities were reported in X. A local user can obtain elevated privileges on the target system.
A local user can trigger an integer overflow in the processing of BDF fonts to execute arbitrary code on the target system with root privileges [CVE-2007-1351].
A local user can trigger an integer overflow in 'fonts.dir' to execute arbitrary code on the target system with root privileges [CVE-2007-1352].
A local user can trigger an integer overflow in the XC-MISC extension to execute arbitrary code on the target system with root privileges [CVE-2007-1003].
Sean Larsson of iDefense Labs discovered the XC-MISC extension vulnerability. iDefense reported the other two vulnerabilities.
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Impact:
A local user can obtain root privileges on the target system.
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Solution:
OpenBSD has issued the following patches.
ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/021_xorg.patch
ftp://ftp.openbsd.org/pub/OpenBSD/patches/4.0/common/011_xorg.patch
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Vendor URL: wiki.x.org/wiki/Development/Security?action=show&redirect=SecurityPage (Links to External Site)
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Cause:
Boundary error
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Underlying OS:
UNIX (OpenBSD)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Thu, 5 Apr 2007 00:16:13 -0400
Subject: OpenBSD
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SECURITY FIX: April 4, 2007 All architectures
Multiple vulnerabilities have been discovered in X.Org.
XC-MISC extension ProcXCMiscGetXIDList memory corruption vulnerability, BDFFont parsing
integer overflow vulnerability, fonts.dir file parsing integer overflow vulnerability,
multiple integer overflows in the XGetPixel() and XInitImage functions in ImUtil.c.
CVE-2007-1003, CVE-2007-1351, CVE-2007-1352, CVE-2007-1667.
A source code patch exists which remedies this problem.
ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/021_xorg.patch
ftp://ftp.openbsd.org/pub/OpenBSD/patches/4.0/common/011_xorg.patch
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