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Buffer overflow attacks are a significant security concern for software systems. Address space randomization helps prevent these attacks by making it difficult for attackers to predict the memory location of variables, thus thwarting attempts to overwrite program variables and hijack control flow. Non-executable stacks further protect against executing arbitrary code by ensuring that certain areas of memory cannot be executed. Return-to-libc techniques may bypass some defenses, such as address space randomization. This article also discusses the implications of false positives in Intrusion Detection Systems (IDS).
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Address space randomization helps prevent which components of buffer overflow attacks? • A: overwriting program variables • B: hijacking the control flow • C: executing arbitrary code
Non-executable stacks help prevent which component of buffer overflow attacks? • A: overwriting program variables • B: hijacking the control flow • C: executing arbitrary code
Return-to-libc is a countermeasure to foil which buffer overflow defense? • A: Address space randomization • B: Non-executable stack • C: libsafe
If an IDS reports an attack when only benign actions occur, this is an example of a: • A: false positive • B: false negative • C: evasion
