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Issue No. 06 - Nov.-Dec. (2013 vol. 10)
ISSN: 1545-5971
pp: 341-354
Hongxin Hu , Dept. of Comput. & Inf. Sci., Delaware State Univ., Dover, DE, USA
Gail-Joon Ahn , Security Eng. for Future Comput. Lab., Arizona State Univ., Tempe, AZ, USA
Ketan Kulkarni , NVIDIA, Sunnyvale, CA, USA
Emerging computing technologies such as web services, service-oriented architecture, and cloud computing has enabled us to perform business services more efficiently and effectively. However, we still suffer from unintended security leakages by unauthorized actions in business services while providing more convenient services to Internet users through such a cutting-edge technological growth. Furthermore, designing and managing web access control policies are often error-prone due to the lack of effective analysis mechanisms and tools. In this paper, we represent an innovative policy anomaly analysis approach for web access control policies, focusing on extensible access control markup language policy. We introduce a policy-based segmentation technique to accurately identify policy anomalies and derive effective anomaly resolutions, along with an intuitive visualization representation of analysis results. We also discuss a proof-of-concept implementation of our method called XAnalyzer and demonstrate how our approach can efficiently discover and resolve policy anomalies.
Data structures, Authorization, Boolean functions, Algorithm design and analysis, Access control, Web services, Knowledge discovery

Hongxin Hu, Gail-Joon Ahn and K. Kulkarni, "Discovery and Resolution of Anomalies in Web Access Control Policies," in IEEE Transactions on Dependable and Secure Computing, vol. 10, no. 6, pp. 341-354, 2014.
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