cyberstrikeus CIS 6.3 — Ensure all CPU vulnerabilities are mitigated
Profile Applicability
- Level 1
Description
Ensure that all known CPU vulnerabilities are mitigated. This ensures that known attacks, such as Spectre, Meltdown, etc. either do not affect the node or are mitigated via software.
Rationale
Vulnerability mitigation ensures that known attacks cannot be exploited.
Impact
Impact analysis should be performed on a per-mitigation basis.
Audit Procedure
View CPU mitigations:
$ ls /sys/devices/system/cpu/vulnerabilities
Output may resemble the following:
"Not affected" CPU is not affected by the vulnerability
"Vulnerable" CPU is affected and no mitigation in effect
"Mitigation: $M" CPU is affected and mitigation $M is in effect
Remediation
Add the appropriate kernel arguments to the MachineConfigPools of the workers nodes and reboot them. See Documentation Chapter 1.Customizing nodes | Red Hat Product Documentation
Default Value
The cpu vulnerabilities file is not populated by default
References
None listed in the PDF.
CIS Controls
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|---|---|---|---|
| v8 | 7.4 Perform Automated Application Patch Management | Y | Y | Y |
MITRE ATT&CK Mappings
| Tactic | Technique |
|---|---|
| Privilege Escalation | T1068 - Exploitation for Privilege Escalation |
| Credential Access | T1212 - Exploitation for Credential Access |
Profile
- Level 1 - OpenShift Virtualization