CVE-2024-5814 Unverifed Ciphersuite used on a client-side TLS1.3 Downgrade

What is CVE-2024-5814?

CVE-2024-5814 is a medium-severity vulnerability in Wolfssl Wolfssl, published on 27 Aug 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official 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

Weakness: CWE-284

Which versions are affected by CVE-2024-5814?

It affects 1 product.

Products include Wolfssl Wolfssl.

How do I fix CVE-2024-5814?

Apply the vendor's patch.

Is CVE-2024-5814 being exploited?

There is no known exploitation of CVE-2024-5814 in the wild and no public exploit code.

Other vulnerabilities in Wolfssl Wolfssl

• CVE-2024-5991 Buffer overread in domain name matching Critical 10.0
• CVE-2021-37155 Security feature bypass in n/a Critical 9.8
• CVE-2020-36177 Memory corruption in n/a Critical 9.8
• CVE-2014-2896 Memory corruption in n/a Critical 9.8
• CVE-2014-2897 Memory corruption in n/a Critical 9.8

All Wolfssl Wolfssl vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2024-5814, GHSA-8cr7-x5g8-m3f3, JLSEC-2026-684, UBUNTU-CVE-2024-5814.