Runtime integrity measurement and enforcement with automated whitelist generation
This poster discusses a strategy for automatic whitelist generation and enforcement using techniques from information flow control and trusted computing. During a measurement phase, a cloud provider uses dynamic taint tracking to generate a whitelist of executed code and associated file hashes generated by an integrity measurement system. Then, at runtime, it can again use dynamic taint tracking to enforce execution only of code from files whose names and integrity measurement hashes exactly match the whitelist, preventing adversaries from exploiting buffer overflows or running their own code on the system. This provides the capability for runtime integrity enforcement or attestation. Our prototype system, built on top of Intel's PIN emulation environment and the libdft taint tracking system, demonstrates high accuracy in tracking the sources of instructions.