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Protecting the Intranet Against “JavaScript Malware” and Related Attacks

  • Conference paper
Detection of Intrusions and Malware, and Vulnerability Assessment (DIMVA 2007)

Part of the book series: Lecture Notes in Computer Science ((LNSC,volume 4579))

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Abstract

The networking functionality of JavaScript is restricted by the Same Origin Policy (SOP). However, as the SOP applies on a document level, JavaScript still possesses certain functionality for cross domain communication. These capabilities can be employed by malicious JavaScript to gain access to intranet resources from the outside. In this paper we exemplify capabilities of such scripts. To protect intranet hosts against JavaScript based threats, we then propose three countermeasures: Element Level SOP, rerouting of cross-site requests, and restricting the local network. These approaches are discussed concerning their respective protection potential and disadvantages. Based on this analysis, the most promising approach, restricting the local network, is evaluated practically.

This work was supported by the German Ministry of Economics (BMWi) as part of the project “secologic”, www.secologic.org.

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Authors and Affiliations

  1. Security in Distributed Systems (SVS), University of Hamburg, Dept of Informatics, Vogt-Koelln-Str. 30, D-22527 Hamburg,  

    Martin Johns & Justus Winter

Authors
  1. Martin Johns
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  2. Justus Winter
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Bernhard M. Hämmerli Robin Sommer

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© 2007 Springer-Verlag Berlin Heidelberg

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Johns, M., Winter, J. (2007). Protecting the Intranet Against “JavaScript Malware” and Related Attacks. In: M. Hämmerli, B., Sommer, R. (eds) Detection of Intrusions and Malware, and Vulnerability Assessment. DIMVA 2007. Lecture Notes in Computer Science, vol 4579. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-73614-1_3

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  • DOI: https://doi.org/10.1007/978-3-540-73614-1_3

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-73613-4

  • Online ISBN: 978-3-540-73614-1

  • eBook Packages: Computer ScienceComputer Science (R0)

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