{"containers":{"cna":{"affected":[{"product":"OpenSSL","vendor":"OpenSSL","versions":[{"status":"affected","version":"Fixed in OpenSSL 1.1.1g (Affected 1.1.1d-1.1.1f)"}]}],"credits":[{"lang":"en","value":"Bernd Edlinger"}],"datePublic":"2020-04-21T00:00:00.000Z","descriptions":[{"lang":"en","value":"Server or client applications that call the SSL_check_chain() function during or after a TLS 1.3 handshake may crash due to a NULL pointer dereference as a result of incorrect handling of the \"signature_algorithms_cert\" TLS extension. The crash occurs if an invalid or unrecognised signature algorithm is received from the peer. This could be exploited by a malicious peer in a Denial of Service attack. OpenSSL version 1.1.1d, 1.1.1e, and 1.1.1f are affected by this issue. This issue did not affect OpenSSL versions prior to 1.1.1d. 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