A malicious TLS1.2 server can force a TLS1.3 client with downgrade capability to use a ciphersuite that it did not agree to and achieve a successful connection. This is because, aside from the extensions, the client was skipping fully parsing the server hello. https://doi.org/10.46586/tches.v2024.i1.457-500
History

Tue, 27 Aug 2024 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Wolfssl
Wolfssl wolfssl
Weaknesses CWE-284
CPEs cpe:2.3:a:wolfssl:wolfssl:-:*:*:*:*:*:*:*
Vendors & Products Wolfssl
Wolfssl wolfssl
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 27 Aug 2024 18:45:00 +0000

Type Values Removed Values Added
Description A malicious TLS1.2 server can force a TLS1.3 client with downgrade capability to use a ciphersuite that it did not agree to and achieve a successful connection. This is because, aside from the extensions, the client was skipping fully parsing the server hello. https://doi.org/10.46586/tches.v2024.i1.457-500
Title Unverifed Ciphersuite used on a client-side TLS1.3 Downgrade
References
Metrics cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/AU:Y/V:D/RE:M/U:Green'}


cve-icon MITRE

Status: PUBLISHED

Assigner: wolfSSL

Published: 2024-08-27T18:38:08.974Z

Updated: 2024-08-27T19:21:04.561Z

Reserved: 2024-06-10T19:48:59.670Z

Link: CVE-2024-5814

cve-icon Vulnrichment

Updated: 2024-08-27T19:20:38.320Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-08-27T19:15:17.980

Modified: 2024-08-28T12:57:39.090

Link: CVE-2024-5814

cve-icon Redhat

No data.