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	    Caldera International, Inc. Security Advisory

Subject:		OpenServer: /etc/popper buffer overflow
Advisory number: 	CSSA-2001-SCO.8
Issue date: 		2001 July 26
Cross reference:
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1. Problem Description
	
	The popper daemon /etc/popper was subject to a buffer overflow
	that could be used by a malicious user.


2. Vulnerable Versions

	Operating System	Version		Affected Files
	------------------------------------------------------------------
	OpenServer		<= 5.0.6a	/etc/popper


3. Workaround

	None.


4. OpenServer

  4.1 Location of Fixed Binaries

	ftp://stage.caldera.com/pub/security/openserver/CSSA-2001-SCO.8/


  4.2 Verification

	md5 checksums:
	

        8f07284a0ce19c8d4dc1f141c136d4f2     popper.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/popper.Z
	# mv /etc/popper /etc/popper.old
	# cp /tmp/popper /etc
	# chown bin /etc/popper
	# chgrp bin /etc/popper
	# chmod 755 /etc/popper


5. References

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

        This advisory addresses Caldera Security internal incident sr848324.

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 Gustavo Viscaino for
	originally finding the problem, Michael Brennen
	<mbrennen@fni.com> for forwarding the problem report from the
	qpopper list, and the folks at Qualcomm for fixing the
	problem.
	 
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