Analysis of Signature Wrapping Attacks and Countermeasures

  • Authors:
  • Sebastian Gajek;Meiko Jensen;Lijun Liao;Jörg Schwenk

  • Affiliations:
  • -;-;-;-

  • Venue:
  • ICWS '09 Proceedings of the 2009 IEEE International Conference on Web Services
  • Year:
  • 2009

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Abstract

In recent research it turned out that Boolean verification of digital signatures in the context of WS-Security is likely to fail: If parts of a SOAP message are signed and the signature verification applied to the whole document returns true, then nevertheless the document may have been significantly altered.In this paper, we provide a detailed analysis on the possible scenarios that enable these signature wrapping attacks. Derived from this analysis, we propose a new solution that uses a subset of XPath instead of ID attributes to point to the signed subtree, and show that this solution is both efficient and secure.