Address Space Layout Randomization

Address Space Layout Randomization: Protection mechanism that randomly arranges memory addresses, thereby making exploits more difficult. The term is relevant for the assessment and design of modern security architecturesSecurity ArchitectureThe structured design of security controls, trust boundaries, data flows, and operational responsibilities. and should be applied within the respective technical and organizational context.

How it works and where it fits

Address Space Layout Randomization is a preventive, detective, or corrective security control. Its effect depends on where it sits in the architecture, which data and decisions it processes, and how it might be bypassed. A control reduces a defined risk but rarely removes it completely, so it should be combined with additional layers of protection.

Practical security relevance

Before deployment, the objective, ownership, coverage, and expected behavior should be defined. Secure defaults, controlled exceptions, logging, and periodic effectiveness tests matter more than installation alone. Operational metrics should expose both blocked or detected activity and gaps, false alerts, and effects on legitimate business processes.

Related concepts

• Memory CorruptionMemory CorruptionUnintentional or targeted alteration of storage structures with security implications.: Unintentional or targeted alteration of storage structures with security implications.
• Binary ExploitationBinary ExploitationExploitation of memory or logic errors in compiled applications.: Exploitation of memory or logic errors in compiled applications.
• ExploitExploitCode or technique that specifically exploits a vulnerability.: Code or technique that specifically exploits a vulnerability.
• HardeningHardeningReduces the attack surface through secure configuration and the deactivation of unnecessary functions.: Reduces the attack surface through secure configuration and the deactivation of unnecessary functions.