This PR adds support for TLSv1.3 to run_server_preference(). It only provides partial support, as it only works if the support supports and earlier TLS protocol (in order to determine whether the server has a cipher order). It also will only show TLSv1.3 as the "Negotiated protocol" if $OPENSSL supports TLSv1.3.
This PR also fixes a bug in which the variable "proto" was defined as used as both a regular variable and as an array.
If run_server_preference() is performed
* against a server that supports SSLv3 and that does not have a cipher order; and
* using a version of OpenSSL that does not support SSLv3; and
* with the --mapping option set to "rfc" or "no-openssl"
then the "Negotiated cipher per proto" will not show the SSLv3 cipher since cipher[i] will be empty.
This PR addresses issue #660 for run_rc4(), ensuring that support for RC4 ciphers is detected even if no RC4 ciphers are supported with the highest protocol that the server supports.
This PR adds support for TLSv1.3 to run_std_cipherlists().
This PR also provides a partial fix for #660 - addressing the issue only for run_std_cipherlists(). Rather than testing the server once for each cipher list, it tries the server once for each protocol supported by the server. This makes the testing more robust, but adds significantly to the time it takes to perform the tests.
This PR addresses issue #660 for run_sweet32(), detecting if 3DES is used, even if it isn't used with the highest protocol version supported by the server. As with PR #854, this increased robustness comes at the expense of taking addition time to run the test.
In client_simulation_sockets() and tls_sockets(), don't work to create a SOCK_REPLY_FILE that contains the entire server's response (in cases where the response was spread across multiple packets) unless $DEBUG is at least 1.
I believe there is a typo in the second definition of DEBUG_ALLINONE. If I run testssl.sh using the -x option for bash I get the following error:
testssl.sh: line 12714: -false: command not found
In order to santize input better there's a fucntion
now which does the work . ``safe_echo()``.
It is actually the same as ``tml_out()`` but is a bit snappier.
This PR adds initial support for TLSv1.3 to tls_sockets() and for run_client_simulation(). It does not change any of the other functions test TLSv1.3. So, with the exception of run_client_simulation(), the functionality added by this PR can only be tested using the --devel option.
This PR does not include the ability to decrypt the encrypted portions of the server's response. So, it does not support functions that need to see such things as the server's certificate, status information, or extensions (other than key share).
This PR fixes the use of has_server_protocol() in two places.
Currently std_ciphersuites() only tries SSLv2 if the server is known to support SSLv2. This changes it to try SSLv2 unless the server is known to not support SSLv2.
In run_beast(), tests against the server are run to determine support for TLSv1.2, TLSv1.1, TLSv1, and SSLv3 unless the server is known to support that protocol (i.e., even if has_server_protocol() reports that the server does not support the protocol). This changes it so that a test is only performed against the server if has_server_protocol() reports that it doesn't know whether the protocol is supported.
In the data provided by https://api.dev.ssllabs.com/api/v3/getClients, Chrome 57 Win 7 and Firefox 53 Win 7 send ClientHellos that indicate support for TLSv1.3 draft 18, but the highest_protocol for each of these is specified as 0x0303. The result is that if the server being tested supports TLSV1.3 draft 18, `run_client_simulation()` will incorrectly report "No connection" for these servers since the DETECTED_TLS_VERSION (0x0304) will be higher than the specified highest_protocol.
This PR fixes the problem by changing the highest_protocol to 0x0304. Note that another solution to this problem would be to change the ClientHello messages for these two browsers. It is my understanding that TLSv1.3 is disabled by default for these browsers, so presumably the ClientHello messages would not specify TLSv1.3 support if they were configured with TLSv1.3 support disabled.
This may not be specific to LibreSSL, but just my local setup. However, when I test using LibreSSL testssl.sh still prints the following message several times:
WARNING: can't open config file: /usr/local/etc/ssl/openssl.cnf
This PR suppresses the error message for several calls to $OPENSSL and so fixes the problem.
The logic is complete now, so that if a protocol has been detected as
supported or not supported it will save a few cycles not to test
this protocol again.
There's probably -- also besides #839 space for improvements. The
advantage of this solution is that ``has_server_protocol()`` also
marks a protocol as tested if the result of the test is negative.
David Cooper
Dirk
Frank Breedijk