New AWS Lambda Function URL Configuration Created

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About the rule

Rule Type

Standard

Rule Description

Detects when a user creates a Lambda function URL configuration, which could be used to expose the function to the internet and potentially allow unauthorized access to the function's IAM role for AWS API calls. This could give an adversary access to the privileges associated with the Lambda service role that is attached to that function.

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "DETECTION_ACTION_AWS_LAMBDA_FUNCTION_URL_CONFIG_CREATED" select Action1.CALLER,Action1.HOSTNAME,Action1.IPADDRESS,Action1.LOG_EVENT_NAME,Action1.SOURCE,Action1.SOURCE_REGION,Action1.REQUESTPARAMETERS

Detection

Execution Mode

realtime

Log Sources

AWS

Author

Ivan Saakov