bugtraq - OpenServer 5.0.6 OpenServer 5.0.7 : termsh atcronsh auditsh environment buffer overflows

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Date: Thu, 7 Apr 2005 13:07:08 -0700
From: please_reply_to_security@....com
To: security-announce@...t.sco.com, bugtraq@...urityfocus.com,
	full-disclosure@...ts.netsys.com
Subject: OpenServer 5.0.6 OpenServer 5.0.7 : termsh atcronsh auditsh environment buffer overflows



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______________________________________________________________________________

			SCO Security Advisory

Subject:		OpenServer 5.0.6 OpenServer 5.0.7 : termsh atcronsh auditsh environment buffer overflows
Advisory number: 	SCOSA-2005.15
Issue date: 		2005 April 7
Cross reference:	sr875152 fz527464 erg712238 sr886656 fz528456 erg712472 sr886657 fz528457 erg712473 CAN-2005-0351
______________________________________________________________________________


1. Problem Description

	A very long HOME environment variable will cause a buffer
	overflow in auditsh, atcronsh and termsh. 

	506 requires
	OSS646C installed prior to installation of this fix 

	The Common Vulnerabilities and Exposures project (cve.mitre.org)
	has assigned the name CAN-2005-0351 to this issue.


2. Vulnerable Supported Versions

	System				Binaries
	----------------------------------------------------------------------
	OpenServer 5.0.6 		/usr/lib/sysadm/auditsh
					/usr/lib/sysadm/termsh
					/usr/lib/sysadm/atcronsh

	OpenServer 5.0.7 		/usr/lib/sysadm/auditsh
					/usr/lib/sysadm/termsh
					/usr/lib/sysadm/atcronsh

3. Solution

	The proper solution is to install the latest packages.

4. OpenServer 5.0.6

	4.1 First install oss646c 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 Installation of oss646c

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

	4.5 Location of Fixed Binaries

	ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2005.15

	4.6 Verification

	MD5 (VOL.000.000) = 3b47d83661354009a73acbd2979c4d0c

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


	4.7 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-2005.15

	5.2 Verification

	MD5 (VOL.000.000) = 3b47d83661354009a73acbd2979c4d0c

	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-2005-0351

	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 sr875152 fz527464
	erg712238 sr886656 fz528456 erg712472 sr886657 fz528457
	erg712473.


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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