cdk-nag
Version:
Check CDK v2 applications for best practices using a combination on available rule packs.
64 lines • 7.75 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
/*
Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
const path_1 = require("path");
const aws_cdk_lib_1 = require("aws-cdk-lib");
const aws_events_1 = require("aws-cdk-lib/aws-events");
const nag_rules_1 = require("../../nag-rules");
/**
* EventBridge event bus policies do not allow for open access
* @param node the CfnResource to check
*/
exports.default = Object.defineProperty((node) => {
if (node instanceof aws_events_1.CfnEventBusPolicy) {
if (aws_cdk_lib_1.Stack.of(node).resolve(node.principal) === '*') {
const condition = aws_cdk_lib_1.Stack.of(node).resolve(node.condition);
if (condition === undefined ||
condition.key === undefined ||
condition.type === undefined ||
condition.value === undefined) {
return nag_rules_1.NagRuleCompliance.NON_COMPLIANT;
}
}
const resolvedStatement = aws_cdk_lib_1.Stack.of(node).resolve(node.statement);
if (resolvedStatement !== undefined) {
const condition = aws_cdk_lib_1.Stack.of(node).resolve(resolvedStatement?.Condition);
if (resolvedStatement?.Effect === 'Allow' &&
checkMatchingPrincipal(resolvedStatement?.Principal) === true &&
(condition === undefined || JSON.stringify(condition) === '{}')) {
return nag_rules_1.NagRuleCompliance.NON_COMPLIANT;
}
}
return nag_rules_1.NagRuleCompliance.COMPLIANT;
}
else {
return nag_rules_1.NagRuleCompliance.NOT_APPLICABLE;
}
}, 'name', { value: path_1.parse(__filename).name });
/**
* Helper function to check whether the event bus policy applies to all principals
* @param node The CfnEventBusPolicy to check
* @param principal The principals in the event bus policy
* @returns Whether the CfnEventBusPolicy applies to all principals
*/
function checkMatchingPrincipal(principals) {
if (principals === '*') {
return true;
}
const awsPrincipal = principals.AWS;
if (Array.isArray(awsPrincipal)) {
for (const account of awsPrincipal) {
if (account === '*') {
return true;
}
}
}
else if (awsPrincipal === '*') {
return true;
}
return false;
}
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