Security Update: [CSSA-2002-SCO.15] Open UNIX 8.0.0 UnixWare 7.1.1 : Buffer overflow in libX11 with -xrm

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                Caldera International, Inc.  Security Advisory

Subject:                Open UNIX 8.0.0 UnixWare 7.1.1 : Buffer overflow in libX11 with -xrm
Advisory number:        CSSA-2002-SCO.15
Issue date:             2002 April 11
Cross reference:
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1. Problem Description

        There is a buffer overflow in the X11 library such that any
        command linked with it that accepts the -xrm option will
        core dump if a long string is used as the argument. Any
        setuid setgid program that accepts the -xrm option is
        vulnerable to attack.


2. Vulnerable Supported Versions

        System                          Package
        ----------------------------------------------------------------------
        Open UNIX 8.0.0                 basex
        UnixWare 7.1.1                  basex


3. Solution

        The proper solution is to install the latest packages.


4. Open UNIX 8.0.0

        4.1 Location of Fixed Binaries

        ftp://stage.caldera.com/pub/security/openunix/CSSA-2002-SCO.15


        4.2 Verification

        MD5 (basex.711b.pkg) = 237963c02165609b41f33d6de50279c5

        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:

        Download basex.711b.pkg to the /var/spool/pkg directory

        # pkgadd -d /var/spool/pkg/basex.711b.pkg


5. UnixWare 7.1.1

        5.1 Location of Fixed Binaries

        ftp://stage.caldera.com/pub/security/openunix/CSSA-2002-SCO.15


        5.2 Verification

        MD5 (basex.711b.pkg) = 237963c02165609b41f33d6de50279c5

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


        5.3 Installing Fixed Binaries

        Upgrade the affected binaries with the following commands:

        Download basex.711b.pkg to the /var/spool/pkg directory

        # pkgadd -d /var/spool/pkg/basex.711b.pkg


6. References

        Specific references for this advisory:
                none

        Caldera UNIX security resources:
                http://stage.caldera.com/support/security/

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

        This security fix closes Caldera incidents sr858540, fz519799,
        erg711938.


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.


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