Security Update: [CSSA-2001-SCO.31] OpenServer: Sendmail debug input validation buffer overflow

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___________________________________________________________________________

	    Caldera International, Inc. Security Advisory

Subject:		OpenServer: Sendmail debug input validation buffer overflow
Advisory number: 	CSSA-2001-SCO.31
Issue date: 		2001 November 7
Cross reference:
___________________________________________________________________________


1. Problem Description
	
	An input validation error exists in Sendmail's debugging
	functionality. This could be used by an unauthorized user to
	gain privilege.


2. Vulnerable Versions

	Operating System	Version		Affected Files
	------------------------------------------------------------------
	OpenServer		5.0.4-5.0.6a	/usr/lib/sendmail


3. Workaround

	None.


4. OpenServer

  4.1 Location of Fixed Binaries

	ftp://stage.caldera.com/pub/security/openunix/CSSA-2001-SCO.31/


  4.2 Verification

	md5 checksums:
	
	d6fbe6e6ab98a0170c2d5029b4ade1bf	sendmail.Z


	md5 is available for download from

		ftp://stage.caldera.com/pub/security/tools/


  4.3 Installing Fixed Binaries

	Upgrade the affected binaries with the following commands:

	# mv /usr/lib/sendmail /usr/lib/sendmail.orig
	# chmod 0 /usr/lib/sendmail.orig
	# uncompress /tmp/sendmail.Z
	# cp /tmp/sendmail /usr/lib
	# chown root:bin /usr/lib/sendmail
	# chmod 4711 /usr/lib/sendmail


5. References

	http://www.securityfocus.com/archive/1/217901
	http://www.securityfocus.com/advisories/3583

	This and other advisories are located at
		http://stage.caldera.com/support/security

	This advisory addresses Caldera Security internal incidents
	sr851246, SCO-559-1306, and erg711828.


6. Disclaimer

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


7. Acknowledgements

	This vulnerability was discovered and researched by Cade
	Cairns <cairnscat_private>.

	 
___________________________________________________________________________

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