Title

Access control lists between the test and development environments must be in a deny-by-default posture. (Cat II impact)

Discussion

To prevent malicious or accidental leakage of traffic, organizations must implement a deny-by-default security posture between test and development environments. All ingress and egress traffic not explicitly permitted between test and development environments must be denied. Such rule sets prevent many malicious exploits or accidental leakage by regulating the ports, protocols, or services necessary to each environment.

Check Content

Determine whether a deny-by-default security posture has been implemented for both ingress and egress traffic between the test and development environments. If the organization is not using a deny-by-default security posture for traffic between the test and development environments, this is a finding.

Fix Text

Implement a deny-by-default security posture for both ingress and egress traffic between test and development environments.

Additional Identifiers

Rule ID: SV-51531r1_rule

Vulnerability ID: V-39664

Group Title: ENTD0250 - Access control lists not in deny-by-default security posture.

Expert Comments

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