CVE-2024-5814

Unverifed Ciphersuite used on a client-side TLS1.3 Downgrade

CVE-2024-5814 is fixed in wolfssl on 1 platform by DEBIAN-CVE-2024-5814 (version 5.7.2-0.1), released August 27, 2024. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

5.3

medium

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0047

40th percentile

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

Where it's fixed

Product	Fixed in	Fix	Released
Linux
wolfssl · Debian 13.5 (trixie)	5.7.2-0.1	DEBIAN-CVE-2024-5814	Aug 27, 2024

Details

Published
August 27, 2024
Weakness
Improper Access Control
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-5814

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