CVE-2024-5814

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

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

Remediation

Solution:

  • Update wolfSSL to 5.7.2.

Workaround:

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

Category

5.1
CVSS
Severity: Medium
CVSS 4.0 •
EPSS 0.13%
Affected: wolfSSL wolfSSL
Published at:
Updated at:

References

Link Tags
https://github.com/wolfSSL/wolfssl/blob/master/ChangeLog.md#add_later

Frequently Asked Questions

What is the severity of CVE-2024-5814?
CVE-2024-5814 has been scored as a medium severity vulnerability.
How to fix CVE-2024-5814?
To fix CVE-2024-5814: Update wolfSSL to 5.7.2.
Is CVE-2024-5814 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-5814 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-5814?
CVE-2024-5814 affects wolfSSL wolfSSL.
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