PadSteg: introducing inter-protocol steganography

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• 作者：Bartosz Jankowski (1)
  Wojciech Mazurczyk (1)
  Krzysztof Szczypiorski (1)
  
• 关键词：Steganography ; ARP ; Frame padding ; Etherleak
• 刊名：Telecommunication Systems
• 出版年：2013
• 出版时间：February 2013
• 年：2013
• 卷：52
• 期：2
• 页码：1101-1111
• 全文大小：1607KB
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  16. Jankowski, B., Mazurczyk, W., & Szczypiorski, K. Information hiding using improper frame padding. / Submitted to 14th international telecommunications network strategy and planning symposium (Networks 2010), 27-0.09.2010, Warsaw, Poland.
  
• 作者单位：Bartosz Jankowski (1)
  Wojciech Mazurczyk (1)
  Krzysztof Szczypiorski (1)
  
  1. Institute of Telecommunications, Warsaw University of Technology, 15/19 Nowowiejska Str., Warsaw, Poland
  
• ISSN：1572-9451

文摘

Hiding information in network traffic may lead to leakage of confidential information. In this paper we introduce a new steganographic system: the PadSteg (Padding Steganography). To authors-best knowledge it is the first information hiding solution which represents inter-protocol steganography i.e. usage of relation between two or more protocols from the TCP/IP stack to enable secret communication. PadSteg utilizes ARP and TCP protocols together with an Etherleak vulnerability (improper Ethernet frame padding) to facilitate secret communication for hidden groups in LANs (Local Area Networks). Basing on real network traces we confirm that PadSteg is feasible in today’s networks and we estimate what steganographic bandwidth is achievable while limiting the chance of disclosure. We also point at possible countermeasures against PadSteg.