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From: security at sco.com (security@....com)
Subject: UnixWare 7.1.3 Open UNIX 8.0.0 UnixWare 7.1.1 : CDE libDtHelp buffer overflow

To: full-disclosure@...ts.netsys.com

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______________________________________________________________________________

			SCO Security Advisory

Subject:		UnixWare 7.1.3 Open UNIX 8.0.0 UnixWare 7.1.1 : CDE libDtHelp buffer overflow
Advisory number: 	CSSA-2003-SCO.31
Issue date: 		2003 October 31
Cross reference:	sr885326 fz528372 erg712445 CAN-2003-083 CERT VU#575804
______________________________________________________________________________


1. Problem Description

	The Common Desktop Environment (CDE) is a standard desktop
	environment for UNIX based systems. CDE libDTHelp contains
	a buffer overflow that can be exploited by a local user
	using specially crafted environment variables.
	
	An authenticated local user may be able to execute arbitrary
	code with root privileges. There is a possibility that a
	user can set the crafted environment variable to gain
	elevated privileges during initialization of the dtHelp
	application, or applications which link to libtDtHelp.

	The Common Vulnerabilities and Exposures project (cve.mitre.org)
	has assigned the name CAN-2003-0834 to this issue. CERT has
	assigned the name VU#575804 to this issue


2. Vulnerable Supported Versions

	System				Binaries
	----------------------------------------------------------------------
	UnixWare 7.1.3 		/usr/dt/lib/libDtHelp.so.1
	Open UNIX 8.0.0 	/usr/dt/lib/libDtHelp.so.1
	UnixWare 7.1.1 		/usr/dt/lib/libDtHelp.so.1


3. Solution

	The proper solution is to install the latest packages.


4. UnixWare 7.1.3 / Open UNIX 8.0.0 / UnixWare 7.1.1

	4.1 Location of Fixed Binaries

	ftp://ftp.sco.com/pub/updates/UnixWare/CSSA-2003-SCO.31


	4.2 Verification

	MD5 (erg712445.pkg.Z) = ecd4aaba3c6d0f7a22b7d2812fc9a174

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


	4.3 Installing Fixed Binaries

	Upgrade the affected binaries with the following sequence:

	Download erg712445.pkg.Z to the /var/spool/pkg directory

	# uncompress /var/spool/pkg/erg712445.pkg.Z
	# pkgadd -d /var/spool/pkg/erg712445.pkg


5. References

	Specific references for this advisory:
		http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0834 
		http://www.kb.cert.org/vuls/id/575804

	SCO security resources:
		http://www.sco.com/support/security/index.html

	This security fix closes SCO incidents sr885326 fz528372
	erg712445.


6. Disclaimer

	SCO 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 SCO
	products.


7. Acknowledgments

	SCO would like to thank Kevin Kotas from Computer Associates
	Intl. eTrust eVM

______________________________________________________________________________

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