Medium severity6.8NVD Advisory· Published Aug 24, 2020· Updated Jun 17, 2026
CVE-2020-24613
CVE-2020-24613
Description
wolfSSL before 4.5.0 mishandles TLS 1.3 server data in the WAIT_CERT_CR state, within SanityCheckTls13MsgReceived() in tls13.c. This is an incorrect implementation of the TLS 1.3 client state machine. This allows attackers in a privileged network position to completely impersonate any TLS 1.3 servers, and read or modify potentially sensitive information between clients using the wolfSSL library and these TLS servers.
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Affected products
3- wolfSSL/wolfSSLdescription
Patches
Vulnerability mechanics
References
1- research.nccgroup.com/2020/08/24/technical-advisory-wolfssl-tls-1-3-client-man-in-the-middle-attack/nvdExploitThird Party Advisory
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