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Conventional methods supporting Java binary security mainly rely on the security of the hosts Java Virtual Machine (JVM). However, malicious Java binaries keep exploiting the vulnerabilities of JVMs, escaping their sandbox restrictions and allowing attacks on end user systems. Administrators must confront the difficulties and dilemmas brought on by security upgrades. On the other hand, binary rewriting techniques have been advanced to allow users to enforce security policies directly on mobile code. They have the advantage of supporting a richer set of security policies and self-constrained written code. However, the high administrative and performance overhead caused by security configuration and code rewriting have prevented rewriters from becoming a practical security tool.In this paper, we address these problems by integrating binary code rewriters with web caching proxies and build the security system called PB-JARS, a Proxy-based JAva Rewriting System. PB-JARS works as a complimentary system to existing JVM security mechanisms by placing another line of defense between users and their end user systems. It gives system administrators centralized security control and management for mobile code and security policies. We evaluated PB-JARS using a real Java binary traffic model derived from analyzing real web trace records. Our results show that adding binary rewriting to web caching system can be very efficient in improving end host security at low cost.
Security and Protection, Binary Rewriting, Web Servers, Traffic Analysis, Performance Evaluation

B. D. Fleisch and Y. Song, "Utilizing Binary Rewriting for Improving End-Host Security," in IEEE Transactions on Parallel & Distributed Systems, vol. 18, no. , pp. 1687-1699, 2007.
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