[gnutls-devel] GnuTLS | Fix issues in record_size_limit extension handling (!879)

Development of GNU's TLS library gnutls-devel at lists.gnutls.org
Thu Jan 31 20:44:45 CET 2019


Hubert Kario started a new discussion on lib/ext/record_size_limit.c:

>  	if (new_size < MIN_RECORD_SIZE)
>  		return 0;
>  
> -	session->internals.hsk_flags |= HSK_RECORD_SIZE_LIMIT_NEGOTIATED;
> +	/* if a record size larger than user specified maximum, ignore it */
> +	if (new_size > session->security_parameters.max_record_send_size)
> +		return 0;
>  
> -	/* if a larger record size limit than the protocol limit is
> -	 * provided by the peer, ignore it and stick to the default */
> -	if (unlikely(new_size > DEFAULT_MAX_RECORD_SIZE))
> -		return gnutls_assert_val(0);

I don't think it should be ignored, it should be clamped to MAX_RECORD_SIZE

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