Vulnerability identifier: #VU74826

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-29536

CWE-ID: CWE-763

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Mozilla Firefox
Client/Desktop applications / Web browsers
Firefox ESR
Client/Desktop applications / Web browsers
Firefox for Android
Mobile applications / Apps for mobile phones
Firefox Focus for Android
Mobile applications / Apps for mobile phones

Vendor: Mozilla

Description

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

The vulnerability exists due to an invalid free operation from JavaScript code. A remote attacker can trick the victim to visit a specially crafted web page, trigger memory corruption and execute arbitrary code.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 100.0 - 111.0.1

Firefox ESR: 102.0 - 102.9.0

Firefox for Android: 100.1.0 - 111.1.1

---

External links
http://www.mozilla.org/en-US/security/advisories/mfsa2023-13/
http://www.mozilla.org/en-US/security/advisories/mfsa2023-14/

---

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.