CVSS 3.1 Score 5.3 of 10 (medium)


Published Feb 15, 2024


CVE-2023-6937 is a vulnerability in wolfSSL prior to version 5.6.6 that allows for the combination of (D)TLS messages using different keys into one (D)TLS record. The most extreme case is that an unencrypted (D)TLS 1.3 record from the server containing a ServerHello message and the rest of the first server flight could be accepted by a wolfSSL client. This vulnerability does not compromise key negotiation and authentication, leading to a low severity rating. The affected products are 't9ySXW' and 't9ySXX'. No remediation steps were mentioned, but it is advised to update to version 5.6.6 or later to mitigate this vulnerability.


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