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Detect when an AWS security group is opened to the world on a port commonly associated with an administrative service.
Monitor CloudTrail and detect when an AWS security group has been created or modified with one of the following API calls:
This rule inspects the @requestParameters.ipPermissions.items.ipRanges.items.cidrIp
or @requestParameters.cidrIp
array to determine if either of the strings are contained - 0.0.0.0/0
or ::/0
for the following ports:
Administrative ports that are open to the world are a common target for attackers to gain unauthorized access to resources or data.
Note: There is a separate rule to detect AWS Security Group Open to the World.
{{@userIdentity.session_name}}
should have made a {{@evt.name}}
API call.aws-cli
command revoke-security-group-ingress
or the AWS console to remove the rule.aws-cli
command modify-security-group-rules
or AWS console to modify the existing rule.