Security Update: [CSSA-2002-SCO.41] UnixWare 7.1.1 Open UNIX 8.0.0 : rcp of /proc causes denial-of-service

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                    SCO Security Advisory

Subject: UnixWare 7.1.1 Open UNIX 8.0.0 : rcp of /proc causes
denial-of-service
Advisory number: CSSA-2002-SCO.41
Issue date: 2002 October 21
Cross reference:

1. Problem Description

    An rcp of /proc by a normal user can cause the entire system
    to be unusable.
   

2. Vulnerable Supported Versions

    System                          Binaries
    ----------------------------------------------------------------------
    UnixWare 7.1.1                  /etc/conf/pack.d/fs/Driver_atup.o
                                    /etc/conf/pack.d/fs/Driver_mp.o
    Open UNIX 8.0.0                 /etc/conf/pack.d/fs/Driver_atup.o
                                    /etc/conf/pack.d/fs/Driver_mp.o
   

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-2002-SCO.41
   
   
    4.2 Verification
   
    MD5 (erg712112c.pkg.Z) = 106da290e2483bc7aba11d7f486b50c4
   
    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 erg712112c.pkg.Z to the /var/spool/pkg directory
   
    # uncompress /var/spool/pkg/erg712112c.pkg.Z
    # pkgadd -d /var/spool/pkg/erg712112c.pkg
   

5. Open UNIX 8.0.0

    5.1 Location of Fixed Binaries
   
    ftp://ftp.sco.com/pub/updates/OpenUNIX/CSSA-2002-SCO.41
   
   
    5.2 Verification
   
    MD5 (erg712112d.pkg.Z) = b0e485feccbbe76aefb4061f9b7e6192
   
    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 erg712112d.pkg.Z to the /var/spool/pkg directory
   
    # uncompress /var/spool/pkg/erg712112d.pkg.Z
    # pkgadd -d /var/spool/pkg/erg712112d.pkg
   

6. References

    Specific references for this advisory:
            http://mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-1231
   
    SCO security resources:
            http://www.sco.com/support/security/index.html
   
    This security fix closes SCO incidents sr868418, fz525927,
    erg712112.
   

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.