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Add missing check in mysqlnd_auth.c #21711

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Add missing check in mysqlnd_auth.c #21711

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7 changes: 7 additions & 0 deletions ext/mysqlnd/mysqlnd_auth.c
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Original file line number Diff line number Diff line change
Expand Up @@ -920,6 +920,13 @@ mysqlnd_sha256_auth_get_auth_data(struct st_mysqlnd_authentication_plugin * self
ret[passwd_len] = '\0';
} else {
*auth_data_len = 0;

if (auth_plugin_data_len < SCRAMBLE_LENGTH) {
SET_CLIENT_ERROR(conn->error_info, CR_MALFORMED_PACKET, UNKNOWN_SQLSTATE, "The server sent wrong length for scramble");
DBG_ERR_FMT("The server sent wrong length for scramble %zu. Expected %u", auth_plugin_data_len, SCRAMBLE_LENGTH);
DBG_RETURN(NULL);
}

server_public_key = mysqlnd_sha256_get_rsa_key(conn, session_options, pfc_data);

if (server_public_key) {
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