Alibaba Cloud Security group allow internet traffic to SSH port (22)

Description

This policy identifies Security groups that allow inbound traffic on SSH port (22) from the public internet. As a best practice, restrict security groups to only allow permitted traffic and limit brute force attacks on your network.

Code Example

resource "alicloud_security_group_rule" "example" {
  ...
  type = "ingress"
  ip_protocol = "tcp"
  port_range = "22/22"
-  cidr_ip = "0.0.0.0/0"
+  cidr_ip = "192.168.1.0/24"
}

Remediation

Terraform

• Resource: alicloud_security_group_rule
• Attribute: cidr_ip

To mitigate this issue, ensure that the `cidr_ip` attribute in the `alicloud_security_group_rule` resource does not include `0.0.0.0/0` for ingress on port 22.

Example:

Rule Details

Field	Value
ID	IAC-0002
Severity	INFO
IaC Type	Terraform
Frameworks	Terraform
Checkov ID	CKV_ALI_2

References

• Checkov Rule

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