PT11. Message Ordering Pattern (also P10 PDU Order Pattern)

Initial publication S. Wendzel, S. Zander, B. Fechner, C. Herdin in [1]
Alias(es) PDU Order [1], Manipulated Message Ordering [2], Message Ordering [3].
Illustration The covert channel encodes data using a synthetic PDU order for a given number of PDUs flowing between covert sender and receiver.
Context Network Covert Timing Channels -> Protocol-aware
Evidence K. Ahsan and D. Kundur. 2002. Practical Data Hiding in TCP/IP. In Proc. Workshop on Multimedia Security
at ACM Multimedia ’02.

X. Luo, E.W.W. Chan, and R.K.C. Chang. 2007. Cloak: A Ten-Fold Way for Reliable Covert Communications. In Proc. 12th European Symposium On Research In Computer Security (ESORICS 2007) (LNCS), Vol. 4734. Springer.

A. El-Atawy and E. Al-Shaer. 2009. Building Covert Channels over the Packet Reordering Phenomenon. In INFOCOM 2009. 2186–2194.

See [1] and [2] for more evidence entries.
Implementation Cloak (not public)
Known Pattern-based Countermeasures

[1] S. Wendzel, S. Zander, B. Fechner, C. Herdin: Pattern-based Survey and Categorization of Network Covert Channel Techniques, ACM Computing Surveys, Vol. 47, Issue 3, pp. 50:1-26, ACM, 2015.
An early version of the article is available here: download.

[2] W. Mazurczyk, S. Wendzel, S. Zander, A. Houmansadr, K. Szczypiorski: Information Hiding in Communication Networks: Fundamentals, Mechanisms, and Applications, IEEE Series on Information and Communication Networks Security, Wiley, 2016 (cf.

[3] W. Mazurczyk, S. Wendzel, K. Cabaj: Towards Deriving Insights into Data Hiding Methods Using Pattern-based Approach, in Proc. Second International Workshop on Criminal Use of Information Hiding (CUING 2018) at ARES, pp. 10:1-10:10, ACM, 2018.

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