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CVE-2024-39687

7.2 · HIGH

Fedify is a TypeScript library for building federated server apps powered by ActivityPub and other standards.

Published Jul 5, 2024CWE-918EPSS 0.60%

Overview

CVE-2024-39687 is a high-severity vulnerability. It was published on July 5, 2024 and has a CVSS 3.1 base score of 7.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Fedify is a TypeScript library for building federated server apps powered by ActivityPub and other standards. At present, when Fedify needs to retrieve an object or activity from a remote activitypub server, it makes a HTTP request to the `@id` or other resources present within the activity it has received from the web. This activity could reference an `@id` that points to an internal IP address, allowing an attacker to send request to resources internal to the fedify server's network. This applies to not just resolution of documents containing activities or objects, but also to media URLs as well. Specifically this is a Server Side Request Forgery attack. Users should upgrade to Fedify version 0.9.2, 0.10.1, or 0.11.1 to receive a patch for this issue.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/dahlia/fedify/commit/30f9cf4a175704a04c874f3ea88414c5f1e00b28GitHubgithub.com/dahlia/fedify/commit/c641e976089dd913f649889c1bfb016df04e86baGitHubgithub.com/dahlia/fedify/security/advisories/GHSA-p9cg-vqcc-grcxGitHubgithub.com/dahlia/fedify/commit/30f9cf4a175704a04c874f3ea88414c5f1e00b28GitHubgithub.com/dahlia/fedify/commit/c641e976089dd913f649889c1bfb016df04e86baGitHubgithub.com/dahlia/fedify/security/advisories/GHSA-p9cg-vqcc-grcx

How CyberStrike helps

Frequently asked questions

What is CVE-2024-39687?

CVE-2024-39687 is a high-severity vulnerability. It was published on July 5, 2024 and has a CVSS 3.1 base score of 7.2 (HIGH).

How severe is CVE-2024-39687?

This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-39687?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2024-39687?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-39687 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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