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UnixWare 7.1.4 : cdrecord local root exploit

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______________________________________________________________________________

                        SCO Security Advisory

Subject:                UnixWare 7.1.4 : cdrecord local root exploit
Advisory number:        SCOSA-2005.20
Issue date:             2005 April 07
Cross reference:        sr891408 fz530156 erg712690 CAN-2004-0806
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1. Problem Description

        cdrecord in the cdrtools package before 2.01, when installed
        setuid root, does not properly drop privileges before
        executing a program specified in the RSH environment variable,
        which allows local users to gain privileges. 

        The Common Vulnerabilities and Exposures project (cve.mitre.org) 
        has assigned the name CAN-2004-0806 to this issue.


2. Vulnerable Supported Versions

        System                          Binaries
        ----------------------------------------------------------------------
        UnixWare 7.1.4                  cdrtools distribution


3. Solution

        The proper solution is to install the latest packages.

4. UnixWare 7.1.4

        4.1 Location of Fixed Binaries

        ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.20

        4.2 Verification

        MD5 (cdrtools.pkg) = 5921506ffd8ff63a0207d946912f2493

        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:

        Download cdrtools.pkg to the /var/spool/pkg directory

        # pkgadd -d /var/spool/pkg/cdrtools.pkg


5. References

        Specific references for this advisory:
                http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0806

        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 sr891408 fz530156
        erg712690.


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.


7. Acknowledgments

        SCO would like to thank Max Vozeler

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