Arbitrary JavaScript code execution in Mozilla PDF.js



Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-4367
CWE-ID CWE-843
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 PDF.js
Web applications / JS libraries

Vendor Mozilla

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Type Confusion

EUVDB-ID: #VU89537

Risk: High

CVSSv4.0: 7.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2024-4367

CWE-ID: CWE-843 - Type confusion

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a type confusion error when handling fonts in PDF.js. A remote attacker can trick the victim to visit a specially crafted website, trigger a type confusion error and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PDF.js: 0.1.0 - 4.1.392

CPE2.3 External links

https://codeanlabs.com/blog/research/cve-2024-4367-arbitrary-js-execution-in-pdf-js/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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