Exploit Methods/Reused code chunks

Details

This is more generally knows as Return Oriented Programming (ROP) or Jump Oriented Programming (JOP), but ultimately boils down to using the kernel's own executable memory to build a chain of gadgets in order to perform the attacker's exploit.

Examples

• remote execution (slides)
• JIT spraying

Mitigations

• compiler instrumentation for Control Flow Integrity (CFI)
• Return Address Protection, Indirect Control Transfer Protection (e.g. RAP)
• Constant blinding (to defeat JIT sprays)