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Security Update: [CSSA-2001-SCO.33] OpenServer 5.0.5: nmap port scanner can kill inetd
From: security () caldera com
Date: Thu, 15 Nov 2001 13:45:45 -0800

To: bugtraq () securityfocus com announce () lists caldera com scoannmod () xenitec on ca


            Caldera International, Inc. Security Advisory

Subject:                OpenServer 5.0.5: nmap port scanner can kill inetd
Advisory number:        CSSA-2001-SCO.33
Issue date:             2001 November 15

1. Problem Description
        The "nmap" port scanner can kill inetd if invoked with the -P0

2. Vulnerable Versions

        Operating System        Version         Affected Files
        OpenServer              5.0.5           /etc/inetd

3. Workaround

        This problem is fixed in the OpenServer 5.0.6 product. If an
        OpenServer 5.0.6 machine is available, the inetd binary from
        it can be used on the OpenServer 5.0.5 machine.

4. OpenServer

  4.1 Location of Fixed Binaries


  4.2 Verification

        md5 checksums:

        43a9a473c59b6af8314504701f331a86        inetd.Z

        md5 is available for download from


  4.3 Installing Fixed Binaries

        Upgrade the affected binaries with the following commands:

        Download inetd.Z into the /tmp directory
        # cd /tmp
        # uncompress inetd.Z
        # mv /etc/inetd /etc/inetd-
        # chmod 0 /etc/inetd-
        # mv /tmp/inetd /etc
        # chown bin:bin /etc/inetd
        # chmod 711 /etc/inetd

5. References


        This and other advisories are located at

        This advisory addresses Caldera Security internal incidents
        sr853144, SCO-236-1787, and erg711859.

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 secure installation and
        use of Caldera International products.


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