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2007

From STEM to SEAD: Speculative Execution for Automated Defense

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From STEM to SEAD: Speculative Execution for Automated Defense
Most computer defense systems crash the process that they protect as part of their response to an attack. Although recent research explores the feasibility of selfhealing to automatically recover from an attack, selfhealing faces some obstacles before it can protect legacy applications and COTS (Commercial Off–The–Shelf) software. Besides the practical issue of not modifying source code, self-healing must know both when to engage and how to guide a repair. Previous work on a self-healing system, STEM, left these challenges as future work. This paper improves STEM’s capabilities along three lines to provide practical speculative execution for automated defense (SEAD). First, STEM is now applicable to COTS software: it does not require source code, and it imposes a roughly 73% performance penalty on Apache’s normal operation. Second, we introduce repair policy to assist the healing process and improve the semantic correctness of the repair. Finally, STEM can create behavior pro...
Michael E. Locasto, Angelos Stavrou, Gabriela F. C
Added 02 Oct 2010
Updated 02 Oct 2010
Type Conference
Year 2007
Where USENIX
Authors Michael E. Locasto, Angelos Stavrou, Gabriela F. Cretu, Angelos D. Keromytis
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