Do not reply to this mail. This security advisory is being sent from a
nonexistent address in order to avoid spam problems.  Caldera's
contact address for UNIX security issues is security-alert@caldera.com.


___________________________________________________________________________

	    Caldera International, Inc. Security Advisory

Subject:		Open UNIX, UnixWare 7: rpc.ttdbserverd format string vulnerability
Advisory number: 	CSSA-2001-SCO.28
Issue date: 		2001 October 17
Cross reference:
___________________________________________________________________________


1. Problem Description
	
	The rpc.ttdbserverd command is vulnerable to a format string
	attack.  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/rpc.ttdbserverd
	Open UNIX		8.0.0		/usr/dt/bin/rpc.ttdbserverd


3. Workaround

	None.


4. UnixWare 7, Open UNIX 8

  4.1 Location of Fixed Binaries

	ftp://stage.caldera.com/pub/security/openunix/CSSA-2001-SCO.28/


  4.2 Verification

	md5 checksums:

	a0adb360b1c576a5792e3334d7676a27	erg711831b.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:

	# uncompress /tmp/erg711831b.Z
	# pkgadd -d /tmp/erg711831b


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
	sr851392, fz518746 and erg711831.


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 Mark Dowd
	of the ISS X-Force.

	 
___________________________________________________________________________