Severity Framework
Snyk CCSS
Rule category
Network / Public Access
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- Snyk ID SNYK-CC-00206
- credit Snyk Research Team
Description
Security groups provide stateful filtering of ingress/egress network traffic to AWS resources. AWS recommends that no security groups explicitly allow inbound ports.
How to fix?
Set the ingress.cidr_blocks attribute with a more restrictive CIDR block, for example 192.168.1.0/24.
Example Configuration
resource "aws_security_group" "inbound-all-private" {
name = "inbound-all-private"
ingress {
from_port = 0
to_port = 0
protocol = "-1"
cidr_blocks = ["192.168.0.0/24"]
}
}