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                                  CERT-Renater

                       Note d'Information No. 2005/VULN332
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DATE                      : 25/05/2005

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : OpenServer 5.0.6, OpenServer 5.0.7.

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			SCO Security Advisory

Subject:		OpenServer 5.0.6 OpenServer 5.0.7 : nwprint privilege escalation
Advisory number: 	SCOSA-2005.26
Issue date: 		2005 May 25
Cross reference:	sr893493 fz531721 erg712826 CAN-2005-0993
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1. Problem Description

	Buffer overflow in nwprint allows local users to execute
	arbitrary code via a long command line argument.

	The Common Vulnerabilities and Exposures project (cve.mitre.org)
	has assigned the name CAN-2005-0993 to this issue.


2. Vulnerable Supported Versions

	System				Binaries
	----------------------------------------------------------------------
	OpenServer 5.0.6 		/usr/lib/nucrt/bin/nwprint
					/usr/lib/nucrt/bin/nwlpstat
					/etc/nwcleand
					/usr/lib/nucrt/bin/nwcancel
					/usr/lib/nucrt/bin/nwlpadmin

	OpenServer 5.0.7 		See the Maintenance Pack 3 Release Notes


3. Solution

	The proper solution is to install the latest packages.

4. OpenServer 5.0.6

         4.1 First install oss646c or later

         4.2 Location of oss646c

         ftp://ftp.sco.com/pub/openserver5/oss646c/

         4.3 Verification of oss646c

         MD5 (VOL.000.000) = f19b6c6949f615316bfb075d249989e8
         MD5 (VOL.000.001) = 341ff8553aecd2c7b0c2beaf83030d0f
         MD5 (VOL.000.002) = 6e46708ad8029e12280d4f9ac60ab814
         MD5 (VOL.000.003) = 2868b64a6a6db742adb3b485be645d7e
         MD5 (VOL.000.004) = 1696fe1db9bb063827ee5e76e58dff84
         MD5 (VOL.000.005) = f39da342f8af72fcaccdf478dca04109
         MD5 (VOL.000.006) = 2b31611c8af7d2e7910d6e8e3cf701a6
         MD5 (VOL.000.007) = d0175c0f4e3ed29435b1eab95609f8f4
         MD5 (VOL.000.008) = aa9e8a525c341fed077f981b1dacb486
         MD5 (VOL.000.009) = 8e023af67b57507824406bdda322079a
         MD5 (VOL.000.010) = 2b46e8adba8ae0b64109f2069da978a2

	4.4 Location of Fixed Binaries

	ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2005.26

	4.5 Verification

	MD5 (VOL.000.000) = 83798688f4e5ac7f9e8c9602df8fa575

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

	4.6 Installing Fixed Binaries

	Upgrade the affected binaries with the following sequence:

	1) Download the VOL* files to a directory

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


5. OpenServer 5.0.7

         5.1 Location of Fixed Binaries

         Maintenance Pack 3

         http://www.sco.com/support/update/download/osr507list.html

         5.2 Verification

         MD5 (507mp3_vol.tar) = c927aefdd50b50aca5d29e08c1562aec

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

         5.3 Installing Fixed Binaries

         See the Maintenance Pack 3 Release Notes

         ftp://ftp.sco.com/pub/openserver5/507/mp/mp3/osr507mp3.html
         or
         ftp://ftp.sco.com/pub/openserver5/507/mp/mp3/osr507mp3.txt

6. References

	Specific references for this advisory:
		http://lists.seifried.org/pipermail/security/2005-April/007678.html
		http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0993

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

	SCO security advisories via email
		http://www.sco.com/support/forums/security.html

	This security fix closes SCO incidents sr893493 fz531721
	erg712826.


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. Acknowledgments

	SCO would like to thank pasquale minervini

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