Operating System:

Published:

27 January 2005

Protect yourself against future threats.

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             AUSCERT External Security Bulletin Redistribution

            ESB-2005.0092 -- SCO Security Advisory SCOSA-2005.5
 OpenServer 5.0.6 OpenServer 5.0.7 : scosessoin local privilege elevation
                              27 January 2005

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           scosession
Publisher:         SCO
Operating System:  OpenServer 5.0.6 and 5.0.7
Impact:            Increased Privileges
Access:            Existing Account
CVE Names:         CAN-2003-1021

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______________________________________________________________________________

			SCO Security Advisory

Subject:		OpenServer 5.0.6 OpenServer 5.0.7 : scosessoin local privilege elevation
Advisory number: 	SCOSA-2005.5
Issue date: 		2005 January 25
Cross reference:	sr886719 fz528461 erg712476 CAN-2003-1021
______________________________________________________________________________


1. Problem Description

	A problem has been identified in the scosession program
	when handling strings on the commandline. Because of this,
	a local attacker may be able to gain elevated privileges.

	The Common Vulnerabilities and Exposures project (cve.mitre.org)
	has assigned the name CAN-2003-1021 to this issue.


2. Vulnerable Supported Versions

	System				Binaries
	----------------------------------------------------------------------
	OpenServer 5.0.6 		/usr/bin/X11/scosession
	OpenServer 5.0.7 		/usr/bin/X11/scosession

3. Solution

	The proper solution is to install the latest packages.

4. OpenServer 5.0.6

	4.1 First install oss646b or later

        4.2 Location of oss646c

        ftp://ftp.sco.com/pub/openserver5/oss646c/

        4.3 Verification of oss646c

        MD5 (VOL.000.000) = f19b6c6949f615316bfb075d249989e8
        MD5 (VOL.000.001) = 341ff8553aecd2c7b0c2beaf83030d0f
        MD5 (VOL.000.002) = 6e46708ad8029e12280d4f9ac60ab814
        MD5 (VOL.000.003) = 2868b64a6a6db742adb3b485be645d7e
        MD5 (VOL.000.004) = 1696fe1db9bb063827ee5e76e58dff84
        MD5 (VOL.000.005) = f39da342f8af72fcaccdf478dca04109
        MD5 (VOL.000.006) = 2b31611c8af7d2e7910d6e8e3cf701a6
        MD5 (VOL.000.007) = d0175c0f4e3ed29435b1eab95609f8f4
        MD5 (VOL.000.008) = aa9e8a525c341fed077f981b1dacb486
        MD5 (VOL.000.009) = 8e023af67b57507824406bdda322079a
        MD5 (VOL.000.010) = 2b46e8adba8ae0b64109f2069da978a2

	4.4 Location of Fixed Binaries

	ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2005.5

	4.5 Verification

	MD5 (VOL.000.000) = 953b64f2a068cd188717ebf3c87e9aed

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

	4.6 Installing Fixed Binaries

	Upgrade the affected binaries with the following sequence:

	1) Download the VOL* files to a directory

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


5. OpenServer 5.0.7

	5.1 Location of Fixed Binaries

	ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2005.5

	The fixes are also available in SCO OpenServer Release 5.0.7
        Maintenance Pack 3 or later.  See
        http://www.sco.com/support/update/download/osr507list.html.

	5.2 Verification

	MD5 (VOL.000.000) = 953b64f2a068cd188717ebf3c87e9aed

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


	5.3 Installing Fixed Binaries

	Upgrade the affected binaries with the following sequence:

	1) Download the VOL* files to a directory

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


6. References

	Specific references for this advisory:
		http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-1021

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

	SCO security advisories via email
		http://www.sco.com/support/forums/security.html

	This security fix closes SCO incidents sr886719 fz528461
	erg712476.


7. 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.


8. Acknowledgments

	SCO would like to thank Joel Soderberg and Christer Oberg
	of Deprotect which describes itself as "a Swedish based
	security company divided into four divisions; Managed
	Security Services, Security Services, Products and Development
	and our Security Academy."

______________________________________________________________________________

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