Security Update: [CSSA-2003-SCO.4] UnixWare 7.1.1 Open UNIX 8.0.0 UnixWare 7.1.3 : Lax permissions on /dev/X

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                        SCO Security Advisory

Subject:                UnixWare 7.1.1 Open UNIX 8.0.0 UnixWare 7.1.3 : Lax permissions on /dev/X
Advisory number:        CSSA-2003-SCO.4
Issue date:             2003 March 04
Cross reference:
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1. Problem Description

        The /dev/X directory is world readable and writable, and
        the files in it are also world readable and writable.
        Denial-of-Service attacks are possible, as well as possible
        data hijacking. The X server sets these permissions when
        it starts up, so there is no workaround for this issue.


2. Vulnerable Supported Versions

        System                          Binaries
        ----------------------------------------------------------------------
        UnixWare 7.1.1                  Standard X Distribution
        Open UNIX 8.0.0                 Standard X Distribution
        UnixWare 7.1.3                  Standard X Distribution

3. Solution

        The proper solution is to install the latest packages.


4. UnixWare 7.1.1

        4.1 Location of Fixed Binaries

        ftp://ftp.sco.com/pub/updates/UnixWare/CSSA-2003-SCO.4


        4.2 Verification

        MD5 (basex.pkg.Z) = 510888d562f6c2249555fefdae94d49d
        MD5 (xserver.pkg.Z) = 74797f12d6e3e80300980854050f62ef

        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 basex.pkg.Z to the /var/spool/pkg directory

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

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


5. Open UNIX 8.0.0

        5.1 Location of Fixed Binaries

        ftp://ftp.sco.com/pub/updates/UnixWare/CSSA-2003-SCO.4


        5.2 Verification

        MD5 (basex.pkg.Z) = 510888d562f6c2249555fefdae94d49d
        MD5 (xserver.pkg.Z) = 74797f12d6e3e80300980854050f62ef

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


        5.3 Installing Fixed Binaries

        Upgrade the affected binaries with the following sequence:

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

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

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


6. UnixWare 7.1.3

        6.1 Location of Fixed Binaries

        ftp://ftp.sco.com/pub/updates/UnixWare/CSSA-2003-SCO.4


        6.2 Verification

        MD5 (basex.pkg.Z) = 510888d562f6c2249555fefdae94d49d
        MD5 (xserver.pkg.Z) = 74797f12d6e3e80300980854050f62ef

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


        6.3 Installing Fixed Binaries

        Upgrade the affected binaries with the following sequence:

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

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

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


7. References

        Specific references for this advisory:

                none

        SCO security resources:

                http://www.sco.com/support/security/index.html

        This security fix closes SCO incidents sr874992, sr874607,
        fz527440, erg712231.


8. 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.

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