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	    Caldera International, Inc. Security Advisory

Subject:		UnixWare 7: message catalog environment variable vulnerability
Advisory number: 	CSSA-2002-SCO.3
Issue date: 		2002 February 7
Cross reference:
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1. Problem Description
	
	The library functions that manipulated message catalogs could
	be subverted via environment variables to use a user's own
	message catalogs, possibly causing a set{uid,gid} program to
	memory fault, allowing the possibility of a privilege
	escalation vulnerability.


2. Vulnerable Supported Versions

	Operating System	Version		Affected Files
	------------------------------------------------------------------
	UnixWare 7		7.1.1		/usr/lib/libc.so.1


3. Workaround

	None.


4. UnixWare 7

  4.1 Location of Fixed Binaries

	ftp://stage.caldera.com/pub/security/unixware/CSSA-2002-SCO.3/


  4.2 Verification

	MD5 (erg711179.Z) = 89b893bc581c8b9601a95a9271268c47

	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:

	Download erg711179.Z to the /tmp directory

	# uncompress /tmp/erg711179.Z
	# pkgadd -d /tmp/erg711179


5. References

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

	This advisory addresses Caldera Security internal incidents
	sr859904, fz512992, erg711179.

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 would like to thank jggm JeGalGhongMyeung
	<jggm@mail.com> for the discovery and research of this
	vulnerability.


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