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			SCO Security Advisory

Subject:		OpenServer 5.0.5 OpenServer 5.0.6 OpenServer 5.0.7 : Samba security update available for download.
Advisory number: 	CSSA-2003-SCO.13.1
Issue date: 		2003 September 10
Cross reference:	erg875829 fz527531 sr876763
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1. Problem Description

	 This vulnerability, if exploited correctly, leads to an
	 anonymous user gaining root access on a Samba serving
	 system. All versions of Samba up to and including Samba
	 2.2.8 are vulnerable. An active exploit of the bug has
	 been reported in the wild. The Common Vulnerabilities and
	 Exposures (CVE) project has assigned: CAN-2003-0201:Buffer
	 overflow in the call_trans2open function in trans2.c for
	 Samba 2.2.x before 2.2.8a, 2.0.10 and earlier 2.0.x versions,
	 and Samba-TNG before 0.3.2, allows remote attackers to
	 execute arbitrary code. and CAN-2003-0085: Buffer overflow
	 in the SMB/CIFS packet fragment re-assembly code for SMB
	 daemon (smbd) in Samba before 2.2.8, and Samba-TNG before
	 0.3.1, allows remote attackers to execute arbitrary code.


2. Vulnerable Supported Versions

	System				Binaries
	----------------------------------------------------------------------
	OpenServer 5.0.5 		Distribution
	OpenServer 5.0.6 		Distribution
	OpenServer 5.0.7 		Distribution

3. Solution

	The proper solution is to install the latest packages.


4. OpenServer 5.0.6 OpenServer 5.0.5 

	4.1 First install:

		oss646b - Execution Environment Supplement
		gwxlibs version 1.2.1Ba - gwxlibs supplement

	4.2 Location of Fixed Binaries

	ftp://ftp.sco.com/pub/updates/OpenServer/CSSA-2003-SCO.13

	4.3 Verification

	MD5 (VOL.000.000) = 175ce3f07683a3a29ce248d1393813ec

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


	4.4 Installing Fixed Binaries

	Upgrade the affected binaries with the following sequence:

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

	2) Run the custom command, specify an install from media
	images, and specify the /tmp 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/CSSA-2003-SCO.13

	5.2 Verification

	MD5 (VOL.000.000) = 175ce3f07683a3a29ce248d1393813ec

	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 the /tmp directory

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

6. References

	Specific references for this advisory:
		http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0201 
		http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0085

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

	This security fix closes SCO incidents erg875829, fz527531,
	sr876763.


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. Acknowledgements

	Thanks to Sebastian Krahmer, SuSE Security Team, and Digital
	Defense, Inc. who alerted the Samba Team to this vulnerability.

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