Security Update: [CSSA-2002-SCO.33] OpenServer 5.0.5 OpenServer 5.0.6 : timed does not enforce nulls

[security () caldera com]

To: bugtraq () securityfocus com announce () lists caldera com scoannmod () xenitec on ca

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                Caldera International, Inc.  Security Advisory

Subject:                OpenServer 5.0.5 OpenServer 5.0.6 : timed does not enforce nulls
Advisory number:        CSSA-2002-SCO.33
Issue date:             2002 July 15
Cross reference:
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1. Problem Description

        The timed program does not enforce null-termination of
        strings in certain situations. It is possible that this
        could be used by a malicious user to perform a remote
        denial-of-service attack.


2. Vulnerable Supported Versions

        System                          Binaries
        ----------------------------------------------------------------------
        OpenServer 5.0.5                /etc/timed
        OpenServer 5.0.6                /etc/timed


3. Solution

        The proper solution is to install the latest packages.


4. OpenServer 5.0.5

        4.1 Location of Fixed Binaries

        ftp://ftp.caldera.com/pub/updates/OpenServer/CSSA-2002-SCO.33


        4.2 Verification

        MD5 (VOL.000.000) = 8f818406b55b806e10b05c3647517265

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


        4.3 Installing Fixed Binaries

                Upgrade the affected binaries with the following commands:

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

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


5. OpenServer 5.0.6

        5.1 Location of Fixed Binaries

        ftp://ftp.caldera.com/pub/updates/OpenServer/CSSA-2002-SCO.33


        5.2 Verification

        MD5 (VOL.000.000) = 8f818406b55b806e10b05c3647517265

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


        5.3 Installing Fixed Binaries

                Upgrade the affected binaries with the following commands:

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

        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://xforce.iss.net/static/6228.php
                http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2001-0388

        Caldera security resources:
                http://www.caldera.com/support/security/index.html

        This security fix closes Caldera incidents sr855195,
        SCO-559-1321, erg711889.


7. Disclaimer

        Caldera International, Inc. 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 Caldera products.


8. Acknowledgements

        This vulnerability was discovered and researched by David
        A. Holland <dholland () www linux org uk>.

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