[Full-disclosure] SCOSA-2005.51 OpenServer 5.0.7 OpenServer 6.0.0 : CUPS Denial of Service Vulnerability

[security@xxxxxxx]

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                        SCO Security Advisory

Subject:                OpenServer 5.0.7 OpenServer 6.0.0 : CUPS Denial of 
Service Vulnerability
Advisory number:        SCOSA-2005.51
Issue date:             2005 November 24
Cross reference:        fz533150
                        sr891399 fz530152 erg712687
                        CVE-2004-0558 CVE-2005-2874

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1. Problem Description

        A remote user can cause the CUPS service to hang and consume all
        available CPU resources.

        The Common Vulnerabilities and Exposures project (cve.mitre.org)
        has assigned the name CVE-2005-2874 to this issue.

        The OpenServer 5.0.7 CUPS is additionally vulnerable to the
        following:

        CUPS versions prior to 1.1.21 are vulnerable to a denial of
        service attack. By sending a specially-crafted UDP packet to the
        IPP port, a remote attacker could cause a denial of service.

        The Common Vulnerabilities and Exposures project (cve.mitre.org)
        has assigned the name CVE-2004-0558 to this issue.


2. Vulnerable Supported Versions

        System                          Binaries
        ----------------------------------------------------------------------
        OpenServer 5.0.7                cups distribution
        OpenServer 6.0.0                cups distribution


3. Solution

        The proper solution is to install the latest packages.


4. OpenServer 5.0.7

        4.1 Location of Fixed Binaries

        The fixes are only available in SCO OpenServer Release 5.0.7
        Maintenance Pack 4 or later.

        ftp://ftp.sco.com/pub/openserver5/507/mp/osr507mp4/osr507mp4_vol.tar


    4.2 Verification

        MD5 (osr507mp4_vol.tar) = 4c87d840ff5b43221258547d19030228

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


    4.3 Installing Fixed Binaries

        See the SCO OpenServer Release 5.0.7 Maintenance Pack 4 Release
        and Installation Notes:

        ftp://ftp.sco.com/pub/openserver5/507/mp/osr507mp4/osr507mp4.htm


5. OpenServer 6.0.0

        5.1 Location of Fixed Binaries

        ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2005.51


    5.2 Verification

        MD5 (VOL.000.000) = 99663199247aa130ffe9c3bfa4a349db

        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 directory as
           the location of the images.


6. References

        Specific references for this advisory:
                http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0558
                http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2874
                http://securitytracker.com/id?1012811
                http://www.cups.org/relnotes.php#010123
                http://www.cups.org/str.php?L1042+P0+S-1+C0+I0+E0+Q1042
                http://xforce.iss.net/xforce/xfdb/17389

        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 fz533150 sr891399
        fz530152 erg712687.


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.


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