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		Caldera International, Inc.  Security Advisory

Subject:		UnixWare 7.1.1 Open UNIX 8.0.0 : REVISED: rpc.ttdbserverd file creation/deletion and buffer overflow vulnerabilities
Advisory number: 	CSSA-2002-SCO.28.1
Issue date: 		2002 August 19
Cross reference:
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1. Problem Description

	Several security bugs were discovered in the rpc.ttdbserverd
	program that allow an attacker to overwrite memory in the
	program as well as force the program to create and delete
	arbitrary files on the system. Some of these vulnerabilities
	are remotely exploitable.

	This update adds a fix for an additional vulnerability: a
	buffer overflow described by CERT CA-2002-26.


2. Vulnerable Supported Versions

	System				Binaries
	----------------------------------------------------------------------
	UnixWare 7.1.1			/usr/dt/bin/rpc.ttdbserverd
	Open UNIX 8.0.0 		/usr/dt/bin/rpc.ttdbserverd


3. Solution

	The proper solution is to install the latest packages.


4. UnixWare 7.1.1

	4.1 Location of Fixed Binaries

	ftp://ftp.caldera.com/pub/updates/OpenUNIX/CSSA-2002-SCO.28.1


	4.2 Verification

	MD5 (erg712073.pkg.Z) = c743fbce3e57a8dd07f417320ff5b3ab

	md5 is available for download from
		ftp://ftp.caldera.com/pub/security/tools


	4.3 Installing Fixed Binaries

		Upgrade the affected binaries with the following commands:

	Download erg712073.pkg.Z to the /var/spool/pkg directory

	# uncompress /var/spool/pkg/erg712073.pkg.Z
	# pkgadd -d /var/spool/pkg/erg712073.pkg


5. Open UNIX 8.0.0

	5.1 Location of Fixed Binaries

	ftp://ftp.caldera.com/pub/updates/OpenUNIX/CSSA-2002-SCO.28.1


	5.2 Verification

	MD5 (erg712073.pkg.Z) = c743fbce3e57a8dd07f417320ff5b3ab

	md5 is available for download from
		ftp://ftp.caldera.com/pub/security/tools


	5.3 Installing Fixed Binaries

		Upgrade the affected binaries with the following commands:

	Download erg712073.pkg.Z to the /var/spool/pkg directory

	# uncompress /var/spool/pkg/erg712073.pkg.Z
	# pkgadd -d /var/spool/pkg/erg712073.pkg


6. References

	Specific references for this advisory:

		CORE ST advisory CORE-20020528
		http://www.cert.org/advisories/CA-2002-20.html

		http://www.entercept.com/news/uspr/08-12-02.asp
		http://www.cert.org/advisories/CA-2002-26.html
		http://www.kb.cert.org/vuls/id/387387
		http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0679

	Caldera security resources:
		http://www.caldera.com/support/security/index.html

	This security fix closes Caldera incidents sr865685, fz521202,
	erg712073.


7. Disclaimer

	Caldera International, Inc. 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 Caldera products.


8. Acknowledgements

	The file creation and deletion vulnerabilities were discovered
	and researched by Ricardo Quesada of the CORE IMPACT team at
	CORE Security Technologies. Sinan Eren of the Entercept
	Richochet Team reported the CA-2002-26 vulnerability.

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