[Full-disclosure] SCOSA-2005.50 OpenServer 6.0.0 : Telnet Environment Leakage

[security@xxxxxxx]

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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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