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            Caldera International, Inc. Security Advisory

Subject: Open UNIX, UnixWare 7: DCE SPC library buffer overflow
Advisory number: CSSA-2001-SCO.30
Issue date: 2001 November 6
Cross reference:
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1. Problem Description
        
        The DCE SPC library is vulnerable to a network buffer overflow
        attack. This bug manifests itself in dtspcd.
        

2. Vulnerable Versions

        Operating System Version Affected Files
        ------------------------------------------------------------------
        UnixWare 7 All /usr/dt/lib/libDtSvc.so.1
        Open UNIX 8.0.0 /usr/dt/lib/libDtSvc.so.1

3. Workaround

        None.

4. UnixWare 7, Open UNIX 8

  4.1 Location of Fixed Binaries

        ftp://stage.caldera.com/pub/security/openunix/CSSA-2001-SCO.30/

  4.2 Verification

        md5 checksums:
        
        8d5c98f761dd68aa108794d8ed5c70f1 erg711881.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:

        # uncompress /tmp/erg711881.Z
        # pkgadd -d /tmp/erg711881

5. References

        CERT / ISS draft advisory VU#172583

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

        This advisory addresses Caldera Security internal incidents
        sr854831, fz519245, and erg711881

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 the secure installation
        and use of Caldera International products.

7. Acknowledgements

        This vulnerability was discovered and researched by Chris
        Spencer of the ISS X-Force.

         
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