[TOOL] Cctde - Covert Channel and Tunneling Over the HTTP Protocol Detection

From: SecuriTeam (support_at_securiteam.com)
Date: 01/25/05

  • Next message: SecuriTeam: "[NT] MSN Heartbeat Control Buffer Overflow (MS04-038)" 
    To: list@securiteam.com
Date: 25 Jan 2005 18:55:53 +0200

    The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
    - - promotion

    The SecuriTeam alerts list - Free, Accurate, Independent.

    Get your security news from a reliable source.
    http://www.securiteam.com/mailinglist.html

    - - - - - - - - -

      Cctde - Covert Channel and Tunneling Over the HTTP Protocol Detection
    ------------------------------------------------------------------------

    SUMMARY

    DETAILS

    Cctde is a first implementation of the Gray-World.net
    <http://gray-world.net/projects/papers/html/cctde.html> Covert Channel and
    Tunneling over the HTTP protocol Detection : GW implementation theoretical
    design' paper.
    The main goal of this project is to provide a way to register and disclose
    informations leading to the detection of unauthorized tunnels and covert
    channels embedded into the HTTP protocol but the concepts could also be
    applied to the detection of arbitrary data flows inside other high level
    protocols.

    Located between a mandatory HTTP proxy server and the HTTP clients (or
    before the NACS if no proxy exists), cctde is trying to detect if someone
    on the internal located network is using a CC|T (Covert Channel OR
    Tunneling) tool to bypass the NACS.

    Located in front of corporate servers in DMZ, cctde is trying to detect if
    someone located on the Internet is using server side tools such as
    <http://gray-world.net/pr_wsh.shtml> WebShell or
    <http://gray-world.net/pr_firepass.shtml> Firepass to run across the NACS
    boundaries.

    Cctde is currently designed as an analysis back-end for the
    <http://www.snort.org/> Snort NIDS tool. Snort acts as a network sensor -
    recording data streams or not in tcpdump format binary files - and
    communicates with the cctde part using an Unix socket. Cctde then reads
    Snort alerts and pcap packets from the Unix socket and store them into
    memory. It is then possible to correlate recorded data in order to detect
    specific network activities.

    Download Information:
    The tool can be obtained from:
    <http://gray-world.net/projects/cctde/cctde-0.2.tar.gz>
    http://gray-world.net/projects/cctde/cctde-0.2.tar.gz

    ADDITIONAL INFORMATION

    To keep updated with the tool visit the project's homepage at:
    <http://gray-world.net/pr_cctde.shtml>
    http://gray-world.net/pr_cctde.shtml

    ========================================

    This bulletin is sent to members of the SecuriTeam mailing list.
    To unsubscribe from the list, send mail with an empty subject line and body to: list-unsubscribe@securiteam.com
    In order to subscribe to the mailing list, simply forward this email to: list-subscribe@securiteam.com

    ====================
    ====================

    DISCLAIMER:
    The information in this bulletin is provided "AS IS" without warranty of any kind.
    In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages.

  • Next message: SecuriTeam: "[NT] MSN Heartbeat Control Buffer Overflow (MS04-038)"

    Relevant Pages