(OpenBSD Issues Fix) Xdm May Open Random TCP Sockets
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SecurityTracker Alert ID: 1010308 |
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SecurityTracker URL: http://securitytracker.com/id/1010308
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CVE Reference:
GENERIC-MAP-NOMATCH
(Links to External Site)
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Date: May 27 2004
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Impact:
User access via network
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Fix Available: Yes Vendor Confirmed: Yes
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Description:
A vulnerability was reported in xdm. The software may open random TCP sockets.
Steve Rumble reported that xdm opens a chooserFd TCP socket even when DisplayManager.requestPort is set to 0.
The flaw resides in 'xc/programs/xdm/socket.c'.
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Impact:
The software may open random TCP ports.
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Solution:
OpenBSD has issued a patch:
ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.5/common/008_xdm.patch
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Vendor URL: bugs.xfree86.org/show_bug.cgi?id=1376 (Links to External Site)
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Cause:
Access control error, State 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: Wed, 26 May 2004 22:38:07 -0400
Subject: OpenBSD xdm security fix
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> 008: SECURITY FIX: May 26, 2004
> With the introduction of IPv6 code in xdm(1), one test on the'requestPort' resource was
> deleted by accident. This makes xdm create the chooser socket even if xdmcp is disabled
> in xdm-config, by setting requestPort to 0. See XFree86 bugzilla for details.
> A source code patch exists which remedies this problem.
ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.5/common/008_xdm.patch
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