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From: security at caldera.com (security@...dera.com)
Subject: Security Update: [CSSA-2002-SCO.40] OpenServer 5.0.5 OpenServer 5.0.6 : ypxfrd remote file access vulnerability

To: bugtraq@...urityfocus.com announce@...ts.caldera.com scoannmod@...itec.on.ca full-disclosure@...ts.netsys.com

______________________________________________________________________________

			SCO Security Advisory

Subject:		OpenServer 5.0.5 OpenServer 5.0.6 : ypxfrd remote file access vulnerability
Advisory number: 	CSSA-2002-SCO.40
Issue date: 		2002 October 10
Cross reference:
______________________________________________________________________________


1. Problem Description

	There is a vulnerability in ypxfrd that allows a local user
	(possibly remote) to read any file on a system running the
	daemon.


2. Vulnerable Supported Versions

	System				Binaries
	----------------------------------------------------------------------
	OpenServer 5.0.5		/etc/ypxfrd
	OpenServer 5.0.6		/etc/ypxfrd


3. Solution

	The proper solution is to install the latest packages.


4. OpenServer 5.0.5

	4.1 Location of Fixed Binaries

	ftp://ftp.caldera.com/pub/updates/OpenServer/CSSA-2002-SCO.40


	4.2 Verification

	MD5 (VOL.000.000) = 62683d366d60f0a4e61bc51c32355c6a

	md5 is available for download from
		ftp://ftp.sco.com/pub/security/tools


	4.3 Installing Fixed Binaries

		Upgrade the affected binaries with the following commands:

	1) Download the VOL* files to the /tmp directory

	Run the custom command, specify an install from media images,
	and specify the /tmp directory as the location of the images.


5. OpenServer 5.0.6

	5.1 Location of Fixed Binaries

	ftp://ftp.caldera.com/pub/updates/OpenServer/CSSA-2002-SCO.40


	5.2 Verification

	MD5 (VOL.000.000) = 62683d366d60f0a4e61bc51c32355c6a

	md5 is available for download from
		ftp://ftp.sco.com/pub/security/tools


	5.3 Installing Fixed Binaries

		Upgrade the affected binaries with the following commands:

	1) Download the VOL* files to the /tmp directory

	Run the custom command, specify an install from media images,
	and specify the /tmp directory as the location of the images.


6. References

	Specific references for this advisory:
		http://www.kb.cert.org/vuls/id/538033
		http://isec.pl/vulnerabilities/0006.txt

	SCO security resources:
		http://www.sco.com/support/security/index.html

	This security fix closes SCO incidents sr868669, fz525993,
	erg712121.


7. Disclaimer

	SCO is not responsible for the misuse of any of the information
	we provide on this website and/or through our security
	advisories. Our advisories are a service to our customers
	intended to promote secure installation and use of SCO
	products.


8. Acknowledgements

	Janusz Niewiadomski <funkysh@...c.pl> of iSEC Security
	Research discovered and researched this vulnerability.

______________________________________________________________________________
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