#VU96744 Type Confusion in OpenSSL - CVE-2024-6119

Vulnerability identifier: #VU96744

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-6119

CWE-ID: CWE-843

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenSSL
Server applications / Encryption software

Vendor: OpenSSL Software Foundation

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a type confusion error when performing certificate name checks. A remote attacker can supply a specially crafted X.509 certificate to the server, trigger a type confusion error and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

OpenSSL: 3.0.0 - 3.0.14, 3.1.0 - 3.1.6, 3.2.0, 3.2.1, 3.2.2, 3.3.0, 3.3.1

---

External links
https://openssl-library.org/news/secadv/20240903.txt

---

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.