SC-39: Process Isolation
Control Family:
CSF v1.1 References:
Threats Addressed:
Baselines:
- Low
- SC-39
- Moderate
- SC-39
- High
- SC-39
Next Version:
- NIST Special Publication 800-53 Revision 5:
- SC-39: Process Isolation
Control Statement
The information system maintains a separate execution domain for each executing process.
Supplemental Guidance
Information systems can maintain separate execution domains for each executing process by assigning each process a separate address space. Each information system process has a distinct address space so that communication between processes is performed in a manner controlled through the security functions, and one process cannot modify the executing code of another process. Maintaining separate execution domains for executing processes can be achieved, for example, by implementing separate address spaces. This capability is available in most commercial operating systems that employ multi-state processor technologies.
Control Enhancements
SC-39(1): Hardware Separation
Baseline(s):
The information system implements underlying hardware separation mechanisms to facilitate process separation.
SC-39(2): Thread Isolation
Baseline(s):
The information system maintains a separate execution domain for each thread in [Assignment: organization-defined multi-threaded processing].