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
Published: 2024-08-27
Score: 5.1 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

Vendor Solution

Update wolfSSL to 5.7.2.


Vendor Workaround

On client side, use the wolfSSL methods for specific protocol versions instead of the downgrade API.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
EUVD EUVD EUVD-2024-46962 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

Sat, 06 Dec 2025 01:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}


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:

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 : Analyzed

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

Modified: 2025-12-06T00:54:13.963

Link: CVE-2024-5814

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses