1.7.1.5 Ensure no unconfined services exist

Information

Unconfined processes run in unconfined domains For unconfined processes, SELinux policy rules are applied, but policy rules exist that allow processes running in unconfined domains almost all access. Processes running in unconfined domains fall back to using DAC rules exclusively. If an unconfined process is compromised, SELinux does not prevent an attacker from gaining access to system resources and data, but of course, DAC rules are still used. SELinux is a security enhancement on top of DAC rules - it does not replace them

Solution

Investigate any unconfined processes found during the audit action. They may need to have an existing security context assigned to them or a policy built for them. Occasionally certain daemons such as backup or centralized management software may require running unconfined. Any such software should be carefully analyzed and documented before such an exception is made.

See Also

https://workbench.cisecurity.org/files/2608

Item Details

Category: SYSTEM AND INFORMATION INTEGRITY

References: 800-53|SI-4, CSCv7|9.2

Plugin: Unix

Control ID: 673a4ffc49c2e4d37415865665efc22974cfb9ccb1e086679e4e4c36d347a914