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📦 npm

GHSA-qj85-69xf-2vxq

MEDIUM

AWS CDK RestApi not generating authorizationScope correctly in resultant CFN template

Also known asCVE-2024-45037
Published
Aug 27, 2024
Updated
Aug 28, 2024
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed

EPSS Exploitation Probability

via FIRST.org ↗
0.3%probability of exploitation in next 30 days
Lower Risk23th percentile-0.22%
0.00%0.34%0.69%1.03%0.4%0.3%Dec 25Apr 26Jun 26

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

1 pkg affected
📦aws-cdk

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects npm packages — download data is not available via public APIs for these ecosystems.

Description

Summary

The AWS Cloud Development Kit (CDK) is an open-source framework for defining cloud infrastructure using code. Customers use it to create their own applications which are converted to AWS CloudFormation templates during deployment to a customer’s AWS account. CDK contains pre-built components called "constructs" that are higher-level abstractions providing defaults and best practices. This approach enables developers to use familiar programming languages to define complex cloud infrastructure more efficiently than writing raw CloudFormation templates.

We identified an issue in AWS Cloud Development Kit (CDK) which, under certain conditions, can result in granting authenticated Amazon Cognito users broader than intended access. Specifically, if a CDK application uses the "RestApi" construct with "CognitoUserPoolAuthorizer" as the authorizer and uses authorization scopes to limit access. This issue does not affect the availability of the specific API resources.

Impact

Authenticated Cognito users may gain unintended access to protected API resources or methods, leading to potential data disclosure, and modification issues.

Impacted versions: >=2.142.0;<=2.148.0

Patches

The patch is included in CDK version >=2.148.1.

Recommended Actions

  • Upgrade your AWS CDK version to 2.148.1 or newer and re-deploy your application(s) to address this issue.
  • If you are using older CDK versions before 2.142.0, you are not affected by this issue, however it is recommended to upgrade to the latest version to receive the latest features and fixes.
  • Confirm whether your application(s) is affected by searching for "CognitoUserPoolsAuthorizer" in your CDK application. If it is referenced inside the "RestApi" construct, and the "RestApi" resource or method utilize authorization scopes to limit access, and you deployed your applications using the impacted versions of CDK, your application is affected.

References

If you have any questions or comments about this advisory we ask that you contact AWS/Amazon Security via our vulnerability reporting page [1] or directly via email to [email protected]. Please do not create a public GitHub issue.

[1] Vulnerability reporting page: https://aws.amazon.com/security/vulnerability-reporting

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmaws-cdk2.142.0&&< 2.148.12.148.1

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for aws-cdk. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update aws-cdk to 2.148.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-qj85-69xf-2vxq is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-qj85-69xf-2vxq is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-qj85-69xf-2vxq. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Summary The AWS Cloud Development Kit (CDK) is an open-source framework for defining cloud infrastructure using code. Customers use it to create their own applications which are converted to AWS CloudFormation templates during deployment to a customer’s AWS account. CDK contains pre-built components called "constructs" that are higher-level abstractions providing defaults and best practices. This approach enables developers to use familiar programming languages to define complex cloud infrastructure more efficiently than writing raw CloudFormation templates. We identified an issue in AWS
O3 Security · Impact-Aware SCA

Is GHSA-qj85-69xf-2vxq in your dependencies?

O3 detects GHSA-qj85-69xf-2vxq across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.