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The ndcfg command raises its privileges with the security subsystem (as opposed to being setuid), and has a buffer overlow in its command line processing. This could allow a malicious user to run code of their choice with raised privileges.

   Caldera International, Inc. Security Advisory

Subject:                UnixWare 7.1.1 Open UNIX 8.0.0 : command line buffer overflow in ndcfg
Advisory number:        CSSA-2002-SCO.36
Issue date:             2002 August 21
Cross reference:
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1. Problem Description

        The ndcfg command raises its privileges with the security
        subsystem (as opposed to being setuid), and has a buffer
        overlow in its command line processing. This could allow a
        malicious user to run code of their choice with raised
        privileges.

2. Vulnerable Supported Versions

        System                          Binaries
        ----------------------------------------------------------------------
        UnixWare 7.1.1                  /usr/lib/netcfg/bin/ndcfg
        Open UNIX 8.0.0                 /usr/lib/netcfg/bin/ndcfg

3. Solution

        The proper solution is to install the latest packages.

4. UnixWare 7.1.1

        4.1 Location of Fixed Binaries

         ftp://ftp.caldera.com/pub/updates/OpenUNIX/CSSA-2002-SCO.36

        4.2 Verification

        MD5 (erg712108.pkg.Z) = f8530ac78e14157fd134fd1f0846ba3c

        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:

        Download erg712108.pkg.Z to the /var/spool/pkg directory

        # uncompress /var/spool/pkg/erg712108.pkg.Z
        # pkgadd -d /var/spool/pkg/erg712108.pkg

5. Open UNIX 8.0.0

        5.1 Location of Fixed Binaries

         ftp://ftp.caldera.com/pub/updates/OpenUNIX/CSSA-2002-SCO.36

        5.2 Verification

        MD5 (erg712108.pkg.Z) = f8530ac78e14157fd134fd1f0846ba3c

        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:

        Download erg712108.pkg.Z to the /var/spool/pkg directory

        # uncompress /var/spool/pkg/erg712108.pkg.Z
        # pkgadd -d /var/spool/pkg/erg712108.pkg

6. References

        Specific references for this advisory:
                 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0981

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

        This security fix closes Caldera incidents sr868384, fz525920,
        erg712108.

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 issue was discovered during an internal security audit.