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CVE-2024-4367

8.8 · HIGH

A type check was missing when handling fonts in PDF.js, which would allow arbitrary JavaScript execution in the PDF.js context.

Published May 14, 2024CWE-754EPSS 70.66%

Overview

CVE-2024-4367 is a high-severity vulnerability. It was published on May 14, 2024 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A type check was missing when handling fonts in PDF.js, which would allow arbitrary JavaScript execution in the PDF.js context. This vulnerability affects Firefox < 126, Firefox ESR < 115.11, and Thunderbird < 115.11.

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

Refbugzilla.mozilla.org/show_bug.cgi?id=1893645Reflists.debian.org/debian-lts-announce/2024/05/msg00010.htmlReflists.debian.org/debian-lts-announce/2024/05/msg00012.htmlRefwww.mozilla.org/security/advisories/mfsa2024-21/Refwww.mozilla.org/security/advisories/mfsa2024-22/Refwww.mozilla.org/security/advisories/mfsa2024-23/Refseclists.org/fulldisclosure/2024/Aug/30Refbugzilla.mozilla.org/show_bug.cgi?id=1893645Refcodeanlabs.com/blog/research/cve-2024-4367-arbitrary-js-execution-in-pdf-js/GitHubgithub.com/gogs/gogs/issues/7928

How CyberStrike helps

Frequently asked questions

What is CVE-2024-4367?

CVE-2024-4367 is a high-severity vulnerability. It was published on May 14, 2024 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2024-4367?

This vulnerability has a CVSS 3.1 base score of 8.8, 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-2024-4367?

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-2024-4367?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-4367 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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