CVE-2024-4367

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.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 13.31% Top 10%
Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Affected: Mozilla Firefox ESR
Affected: Mozilla Thunderbird
Published at:
Updated at:

References

Link Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1893645 issue tracking
https://www.mozilla.org/security/advisories/mfsa2024-21/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2024-22/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2024-23/ vendor advisory
https://lists.debian.org/debian-lts-announce/2024/05/msg00010.html mailing list
https://lists.debian.org/debian-lts-announce/2024/05/msg00012.html mailing list
http://seclists.org/fulldisclosure/2024/Aug/30 mailing list
https://codeanlabs.com/blog/research/cve-2024-4367-arbitrary-js-execution-in-pdf-js/
https://github.com/gogs/gogs/issues/7928
https://github.com/mozilla/pdf.js/releases/tag/v4.2.67
https://www.exploit-db.com/exploits/52273

Frequently Asked Questions

What is the severity of CVE-2024-4367?
CVE-2024-4367 has been scored as a high severity vulnerability.
How to fix CVE-2024-4367?
To fix CVE-2024-4367, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-4367 being actively exploited in the wild?
It is possible that CVE-2024-4367 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~13% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-4367?
CVE-2024-4367 affects Mozilla Firefox, Mozilla Firefox ESR, Mozilla Thunderbird.
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