2020-09-04 14:03:36
mitre
PUBLISHED
An issue was discovered in GnuTLS before 3.6.15. A server can trigger a NULL pointer dereference in a TLS 1.3 client if a no_renegotiation alert is sent with unexpected timing, and then an invalid second handshake occurs. The crash happens in the applications error handling path, where the gnutls_deinit function is called after detecting a handshake failure.