[Full-Disclosure] OpenServer 5.0.6 OpenServer 5.0.7 : MMDF Various buffer overflows and other security issues

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                    SCO Security Advisory

Subject: OpenServer 5.0.6 OpenServer 5.0.7 : MMDF Various buffer overflows and
other security issues
Advisory number: SCOSA-2004.7
Issue date: 2004 July 14
Cross reference: sr884728 fz528322 erg712434 CAN-2004-0510 CAN-2004-0511 CAN-2004-0512

1. Problem Description

    Deprotect discovered a buffer overflow in execmail.  After reviewing 
    our code we determined the whole MMDF package needed a security audit.
   
    Various buffer overflows and other security issues that affect all 
    MMDF binaries have been corrected. 
   
    All but one of the MMDF binaries that were setuid root are no 
    longer setuid. 
   
    Additional changes in this version of MMDF are documented at
    ftp://ftp.sco.com/pub/openserver5/507/mp/mp3/osr507mp3.html#rn507mp_mmdf
    and in the updated man pages which are included in SCOSA-2004.7
   
    The Common Vulnerabilities and Exposures project (cve.mitre.org)
    has assigned MMDF buffer overflows the name CAN-2004-0510.
   
    The Common Vulnerabilities and Exposures project (cve.mitre.org)
    has assigned MMDF null dereferences the name CAN-2004-0511.
   
    The Common Vulnerabilities and Exposures project (cve.mitre.org)
    has assigned MMDF core dumps the name CAN-2004-0512.
   

2. Vulnerable Supported Versions

    System                  Binaries
    ----------------------------------------------------------------------
    OpenServer 5.0.6        MMDF Distribution
    OpenServer 5.0.7        MMDF Distribution
   

3. Solution

    The proper solution is to install the latest packages.
   

4. OpenServer 5.0.7

    4.1 Location of Fixed Binaries
   
    ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2004.7
   
    The fixes are also available in SCO OpenServer Release 5.0.7 
    Maintenance Pack 3 or later.  See
    http://www.sco.com/support/update/download/osr507list.html.
   

5. OpenServer 5.0.6

    5.1 Location of Fixed Binaries
   
    ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2004.7
   
    5.2 Verification
   
    MD5 (VOL.000.000) = 7d079342022ff408e479184fab3ee86b
   
    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 download directory as the location of
    the images.
   

6. References

    Specific references for this advisory:
            http://www.deprotect.com/advisories/DEPROTECT-20040206.txt
   
    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 sr884728 fz528322
    erg712434.
   

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 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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