Security Update: [CSSA-2001-SCO.22] Open Unix, UnixWare 7: dtprintinfo environment buffer overflow

[sco-security () caldera com]

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            Caldera International, Inc. Security Advisory

Subject:                Open Unix, UnixWare 7: dtprintinfo environment buffer overflow
Advisory number:        CSSA-2001-SCO.22
Issue date:             2001 October 1
Cross reference:
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1. Problem Description
        
        Very long environment variables will cause the dtprintinfo
        command to overflow a buffer.  This could be used by an
        unauthorized user to gain privilege.


2. Vulnerable Versions

        Operating System        Version         Affected Files
        ------------------------------------------------------------------
        UnixWare 7              All             /usr/dt/bin/dtprintinfo
        Open Unix               8.0.0           /usr/dt/bin/dtprintinfo


3. Workaround

        None.


4. UnixWare 7

  4.1 Location of Fixed Binaries

        ftp://stage.caldera.com/pub/security/openunix/CSSA-2001-SCO.22/


  4.2 Verification

        md5 checksums:
        
        e726067eba0107ac5efd8c1fdb141b0d        dtprintinfo.Z


        md5 is available for download from

                ftp://stage.caldera.com/pub/security/tools/


  4.3 Installing Fixed Binaries

        Upgrade the affected binaries with the following commands:

        # mv /usr/dt/bin/dtprintinfo /usr/dt/bin/dtprintinfo-
        # uncompress /tmp/dtprintinfo.Z
        # cp dtprintinfo /usr/dt/bin
        # cd /usr/dt/bin
        # chown root dtprintinfo
        # chgrp bin dtprintinfo
        # chmod 4555 dtprintinfo


5. References

        This and other advisories are located at
                http://stage.caldera.com/support/security

        This advisory addresses Caldera Security internal incident
        sr850737.

6. Disclaimer

        Caldera International, Inc. is not responsible for the misuse
        of any of the information we provide on our website and/or
        through our security advisories. Our advisories are a service
        to our customers intended to promote secure installation and
        use of Caldera International products.


7. Acknowledgements

        Caldera International wishes to thank KF <dotslash () snosoft com>
        for discovering and reporting this problem.

         
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