#VU85709 Unchecked Return Value in Mozilla Firefox - CVE-2024-0743

Vulnerability identifier: #VU85709

Vulnerability risk: High

CVSSv4.0: 6.1 [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:U/U:Amber]

CVE-ID: CVE-2024-0743

CWE-ID: CWE-252

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 compromise the affected system.

The vulnerability exists due to an unchecked return value in TLS handshake code in NSS TLS method. A remote attacker can trick the victim to visit a specially crafted website and execute arbitrary code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 116.0 - 121.0.1

---

External links
https://www.mozilla.org/en-US/security/advisories/mfsa2024-01/

---

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.