Security Update: [CSSA-2001-SCO.21] Open Unix, UnixWare 7: dtaction argument buffer overflow

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___________________________________________________________________________

	    Caldera International, Inc. Security Advisory

Subject:		Open Unix, UnixWare 7: dtaction argument buffer overflow
Advisory number: 	CSSA-2001-SCO.21
Issue date: 		2001 October 1
Cross reference:
___________________________________________________________________________



1. Problem Description
	
	Very long arguments to the dtaction command cause an argument
	buffer overflow.  This could be used by an unauthorized user
	to gain privilege.


2. Vulnerable Versions

	Operating System	Version		Affected Files
	------------------------------------------------------------------
	UnixWare 7		All		/usr/dt/bin/dtaction
	Open Unix		8.0.0		/usr/dt/bin/dtaction


3. Workaround

	None.


4. UnixWare 7

  4.1 Location of Fixed Binaries

	ftp://stage.caldera.com/pub/security/openunix/CSSA-2001-SCO.21/


  4.2 Verification

	md5 checksums:
	
	73300a4b513babf273c56ff67a4ff60e	dtaction.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/dt/bin/dtaction /usr/dt/bin/dtaction-
	# uncompress /tmp/dtaction.Z
	# cp dtaction /usr/dt/bin
	# cd /usr/dt/bin
	# chown root dtaction
	# chgrp sys dtaction
	# chmod 6555 dtaction


5. References

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

	This advisory addresses Caldera Security internal incident
	sr847409.

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

	Caldera International wishes to thank KF <dotslashat_private>
        for discovering and reporting this problem.

	 
___________________________________________________________________________

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