nuclei-templates/cloud/aws/vpc/unrestricted-admin-ports.yaml

66 lines
1.9 KiB
YAML

id: unrestricted-admin-ports
info:
name: Unrestricted Admin Port Access
author: princechaddha
severity: high
description: |
Checks for unrestricted ingress on TCP ports 22 (SSH) and 3389 (RDP) in Amazon VPC NACLs, exposing remote server administration to potentially malicious traffic.
impact: |
Allows unrestricted remote access, increasing the risk of unauthorized access and potential compromise.
remediation: |
Restrict access to ports 22 and 3389 to trusted IPs or IP ranges to adhere to the Principle of Least Privilege (POLP).
reference:
- https://docs.aws.amazon.com/vpc/latest/userguide/vpc-network-acls.html
metadata:
max-request: 2
tags: cloud,devops,aws,amazon,vpc,aws-cloud-config
variables:
region: "us-east-1"
flow: |
code(1)
for(let NACLIDs of iterate(template.nacls)){
set("naclid", NACLIDs)
code(2)
}
self-contained: true
code:
- engine:
- sh
- bash
source: |
aws ec2 describe-network-acls --region $region --query 'NetworkAcls[*].NetworkAclId' --output json
extractors:
- type: json
name: nacls
internal: true
json:
- '.[]'
- engine:
- sh
- bash
source: |
aws ec2 describe-network-acls --region $region --network-acl-ids $naclid --query 'NetworkAcls[*].Entries[?(RuleAction==`allow`) && (Egress==`false`)] | []' --output json
matchers-condition: and
matchers:
- type: word
words:
- "0.0.0.0/0"
- "CidrBlock"
condition: and
- type: word
words:
- "22"
- "3389"
condition: or
extractors:
- type: dsl
dsl:
- '"Access to the VPC subnets associated with your NACL " + naclid + " is not restricted."'
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