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			SCO Security Advisory

Subject:		OpenServer 6.0.0 : Telnet Environment Leakage
Advisory number:	SCOSA-2005.50
Issue date:		2005 November 17
Cross reference:	sr895063 fz533032 erg712953
			CVE-2005-0488
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1. Problem Description

	Certain BSD-based telnet clients allow remote malicious telnet
	servers to read sensitive environment variables via the
	NEW-ENVIRON option with a SEND ENV_USERVAR command.
	
	The Common Vulnerabilities and Exposures project (cve.mitre.org)
	has assigned the name CVE-2005-0488 to this issue.


2. Vulnerable Supported Versions

	System				Binaries
	----------------------------------------------------------------------
	OpenServer 6.0.0 		/usr/bin/telnet


3. Solution

	The proper solution is to install the latest packages.


4. OpenServer 6.0.0

	4.1 Location of Fixed Binaries

	ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2005.50


	4.2 Verification

	MD5 (VOL.000.000) = 46b46ad83b21d7e775d58fa80f15f584

	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:

	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. References

	Specific references for this advisory:
		http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-0488
		http://idefense.com/application/poi/display?id=260&type=vulnerabilities

	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 sr895063 fz533032
	erg712953.


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.

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