#VU95499 Use-after-free in Mozilla Firefox - CVE-2024-7530

Vulnerability identifier: #VU95499

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-7530

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Mozilla Firefox
Client/Desktop applications / Web browsers

Vendor: Mozilla

Description

The vulnerability allows a remote attacker to crash the browser

The vulnerability exists due to a use-after-free error in JavaScript code coverage collection. A remote attacker can trick the victim into visiting a specially crafted website, trigger a use-after-free error and crash the browser.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 128.0 - 128.0.3

---

External links
https://bugzilla.mozilla.org/show_bug.cgi?id=1904011
https://www.mozilla.org/security/advisories/mfsa2024-33/

---

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.