Network misconfigurations

AWS EC2 instance allows public ingress access on mongod default port 27018

Risk Level

Hazardous (3)

Compliance Frameworks


The port 27018 is the default port for mongod when running with--shardsvr command-line option or the shardsvr value for the clusterRole setting in a configuration file. It is a security risk to expose DB port to the public internet even though they are on a secure socket layer. Anyone on the internet can run port scanning tools, determine the open ports and launch specific attacks. It is a best practice to block public access, restrict access from specific IP addresses to port 27018 and make the connection secure.
  • Recommended Mitigation

    It is recommended to replace the source IP of the rule with a specific IP address or delete the rule.