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			SCO Security Advisory

Subject:		OpenServer 5.0.5 OpenServer 5.0.6 : REVISED: snmpd denial-of-service vulnerabilities.
Advisory number: 	CSSA-2002-SCO.25.1
Issue date: 		2002 October 15
Cross reference:	CSSA-2002-SCO.25
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1. Problem Description

	The University of Oulu (Finland) wrote approximately 53000
	tests for snmpd error conditions. For OpenServer, many of
	the tests caused the snmp daemon to grow in size. This could
	lead to denial-of-service attacks. This update fixes a
	problem with strlcpy missing from the previous version for
	5.0.5. NOTE: please remove the previous version before
	installing this new version.


2. Vulnerable Supported Versions

	System				Binaries
	----------------------------------------------------------------------
	OpenServer 5.0.5		/usr/lib/libsnmp.so.1
	OpenServer 5.0.6		/usr/lib/libsnmp.so.1


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.25.1


	4.2 Verification

	MD5 (VOL.000.000) = 64ee71be9dda2b336aa759334cf50291

	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 sequence:

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

	2) Remove any previous version of this advisory (erg711930)

	3) 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.25.1


	5.2 Verification

	MD5 (VOL.000.000) = 64ee71be9dda2b336aa759334cf50291

	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 sequence:

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

	2) Remove any previous version of this advisory (erg711930)

	3) 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.cert.org/advisories/CA-2002-03.html

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

	This security fix closes SCO incidents sr858202,SCO-559-1345
	and erg711930.


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

	This vulnerability was discovered and researched by the
	University of Oulu (oulu.fi).

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