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		Caldera International, Inc.  Security Advisory

Subject:		OpenServer 5.0.5 : sar -o buffer overflow
Advisory number: 	CSSA-2002-SCO.17
Issue date: 		2002 May 01
Cross reference:
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1. Problem Description

	If the /usr/bin/sar command is given an exceedingly long
	argument to the o option, it will memory fault. This could
	allow a malicious user to elevate their permissions.


2. Vulnerable Supported Versions

	System				Binary
	----------------------------------------------------------------------
	OpenServer 5.0.5		/usr/bin/sar
					/usr/lib/sa/sadc
					/usr/bin/cpusar
					/usr/bin/mpsar

3. Solution

	The proper solution is to install the latest packages.


4. OpenServer 5.0.5

	4.1 Location of Fixed Binaries

	ftp://stage.caldera.com/pub/security/openserver/CSSA-2002-SCO.17


	4.2 Verification

	MD5 (VOL.000.000) = f912fe801263863956c257c4ef395570

	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:

	1) Download the VOL* files to the /tmp directory

	Run the custom command, specify an install from media images,
	and specify the /tmp directory as the location of the images.


5. References

	Specific references for this advisory:
		none

	Caldera UNIX security resources:
		http://stage.caldera.com/support/security/

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

	This security fix closes Caldera incidents sr862424, fz520480,
	erg712003.


6. 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.


7. Acknowledgements

	Caldera would like to thank KF <dotslash@snosoft.com> for
	discovering this problem, researching it, and alerting us.
	And being patient, too.

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