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	    Caldera International, Inc. Security Advisory

Subject:		UnixWare 7: su buffer overflow
Advisory number: 	CSSA-2001-SCO.2
Issue date: 		2001 June, 26
Cross reference:
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1. Problem Description

	The su command is vulnerable to a command line argument buffer
	overflow. This could allow a process to execute arbitrary
	code, allowing a malicious user to gain elevated privileges.


2. Vulnerable Versions

	Operating System	Version		Affected Files
	------------------------------------------------------------------
	UnixWare 7		All		/sbin/su
						/usr/bin/su
						/usr/lib/libiaf.a
						/usr/lib/libiaf.so

3. Workaround

	None.


4. UnixWare 7

  4.1 Location of Fixed Binaries

	ftp://stage.caldera.com/pub/security/unixware/CSSA-2001-SCO.2/


  4.2 Verification

	md5 checksums:
	
	ec9c4201d83b8031063ff03bd325e200	erg711713a.Z


	md5 is available for download from

		ftp://stage.caldera.com/pub/security/tools/md5


  4.3 Installing Fixed Binaries

	Upgrade the affected binaries with the following commands:

	# uncompress /tmp/erg711713a.Z
	# pkgadd -d /tmp/erg711713a


5. References

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

        This advisory addresses Caldera Security internal incident sr847407.


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, Inc. products.

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