Security Update: [CSSA-2003-SCO.1] UnixWare 7.1.1 Open UNIX 8.0.0 : command line argument buffer overflow in ps

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                        SCO Security Advisory

Subject:                UnixWare 7.1.1 Open UNIX 8.0.0 : command line argument buffer overflow in ps
Advisory number:        CSSA-2003-SCO.1
Issue date:             2003 January 10
Cross reference:
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1. Problem Description

        The ps command has a command line argument buffer overflow.
        Note that ps is not a setuid or setgid program, but instead it
        is authorized to use (and does use) the
        procprivl(SETPRV,pm_work(P_MACREAD) call.  Therefore, this
        vulnerability is exploitable, and could be used to run code of
        the attacker's choice with these elevated privileges.


2. Vulnerable Supported Versions

        System                          Binaries
        ----------------------------------------------------------------------
        UnixWare 7.1.1                  /sbin/ps
                                        /usr/bin/ps

        Open UNIX 8.0.0                 /sbin/ps
                                        /usr/bin/ps


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/OpenUNIX/CSSA-2003-SCO.1


        4.2 Verification

        MD5 (erg712109.pkg.Z) = 70777560bc1e0d55ceff89dfd8334c47

        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 erg712109.pkg.Z to the /var/spool/pkg directory

        # uncompress /var/spool/pkg/erg712109.pkg.Z
        # pkgadd -d /var/spool/pkg/erg712109.pkg


5. Open UNIX 8.0.0

        5.1 Location of Fixed Binaries

        ftp://ftp.sco.com/pub/updates/OpenUNIX/CSSA-2003-SCO.1


        5.2 Verification

        MD5 (erg712109.pkg.Z) = 70777560bc1e0d55ceff89dfd8334c47

        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 erg712109.pkg.Z to the /var/spool/pkg directory

        # uncompress /var/spool/pkg/erg712109.pkg.Z
        # pkgadd -d /var/spool/pkg/erg712109.pkg


6. References

        Specific references for this advisory:

                none

        SCO security resources:

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

        This security fix closes SCO incidents sr868388, fz525923,
        erg712109.


7. 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.


8. Acknowledgements

         SCO Security discovered and researched this vulnerability.

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