Back to the future: fault-tolerant live update with time-traveling state transfer
LISA'13 Proceedings of the 27th international conference on Large Installation System Administration
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Despite the growing attention to security concerns and advances in code verification tools, many memory errors still escape testing and plague production applications with security vulnerabilities. We present RCORE, an efficient dynamic program monitoring infrastructure to perform automated security vulnerability monitoring. Our approach is to perform extensive static analysis at compile time to automatically index program state invariants (PSIs). At runtime, our novel dynamic analysis continuously inspects the program state and produces a report when PSI violations are found. Our technique retrofits existing applications and is designed for both offline and production runs. To avoid slowing down production applications, we can perform our dynamic analysis on idle cores to detect suspicious behavior in the background. The alerts raised by our analysis are symptoms of memory corruption or other—potentially exploitable—dangerous behavior. Our experimental evaluation confirms that RCORE can report on several classes of vulnerabilities with very low overhead.