IP forwarding is enabled on the instance Affecting Compute Engine service in Google
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/ Policy
Is your environment affected by this misconfiguration?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsFrameworks
CIS-GoogleCSA-CCMISO-27001NIST-800-53
- Snyk IDSNYK-CC-00378
- creditSnyk Research Team
Description
By default, a Compute Engine instance cannot forward a packet originated by another instance ("IP forwarding"). If this is enabled, Google Cloud no longer enforces packet source and destination checking, which can result in data loss or unintended information disclosure.
How to fix?
Set the google_compute_instance can_ip_forward attribute to false.
Example Configuration
resource "google_compute_instance" "test" {
name = "enabled-ip-forwarding"
machine_type = "e2-micro"
zone = "us-east1-b"
can_ip_forward = false
boot_disk {
initialize_params {
image = "debian-10-buster-v20220920"
}
}
network_interface {
network = "default"
}
}