Severity Framework
CCSS (Common Configuration Scoring System) is a set of measures used to determine the severity of the rule.
Snyk CCSS
Rule category
Each rule is associated with a high-level category. For example IAM, Container, Monitoring, Logging, Network, etc.
Network/ Ports
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CIS-ControlsCSA-CCMISO-27001NIST-800-53PCI-DSSSOC-2
- Snyk IDSNYK-CC-00198
- creditSnyk Research Team
Description
Elastic Load Balancing security groups should permit access only to necessary ports to prevent access to potentially vulnerable services on other ports.
How to fix?
Ensure that the aws_security_group associated with a load balancer does not have an ingress block that allows access to all TCP ports.
Invalid configurations:
ingress.from_portset to0andingress.to_portset to65535ingress.protocolset to-1
Example Configuration
resource "aws_security_group" "elb-all-valid-elb-group" {
name = "elb-all-valid-elb-group"
description = "ELB All TCP Test"
ingress {
from_port = 80
to_port = 80
protocol = "tcp"
cidr_blocks = ["192.169.1.1/32"]
}
}