cis-ocp-vm-v100-6-3

DevOps & Security

Ensure all CPU vulnerabilities are mitigated (Manual)

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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