For recognising error conditions during run any testssl.sh run, the program
returns 0 if all checks have been performed successfully and unambiguously. 1
is returned per error or unambiguous condition and per IP. E.g. ./testssl.sh
--ssl-native testssl.net with two IP addresses returns 2 as each client
simulation gets a "1" (ssl-native returns currently wrong results here).
This fixes#986.
A kind of vulnerability scoring for monitoring tools or CI will be done
later separately, see #985 and #327.
As before (see #971) and as indicated (#970) some minor
changed to the jsonID have been taking place. Some
redundant verbosity has been eliminated, some IDs
changed the name.
For HTTP2 you should now ALPN_HTTP2.
Some obvious CWEs were added in the JSON section.
ke for null cipher list, information leakage in
the http headers. There's probably space for improvements.
A few early time marks were added to debug time spend.
Some servers will respond with an alert to a ClientHello that does not indicate support for secure renegotiation, which may be signaled through either an extension or the 0x00,0xff "cipher suite." In some cases testssl.sh calls tls_sockets() without including "00,ff" in the list of cipher suites, which results in some servers rejecting a ClientHello that would otherwise result in a successful connection.
This PR fixes the problem by adding "00,ff" to any ClientHello where it was previously missing, with one exception. If a TLSv1.3 ClientHello is being sent and only TLSv1.3 ciphers are listed, then the "00,ff" cipher suite is not added.
Error codes now done until run_server_defaults(). Previous
sections modified so that execution errors are added.
Modified in compare_server_name_to_cert() ret --> subret.
From the code perspective a clear distinction between
passing an error code and a functional return code
would be great. Still has to be determined whether it
maybe better to rename ret into something different.
Removed a stale code line in run_server_preference() for STARTTLS.
Following the recommendation from @dcooper16 this commit is addressing
a situation when the scan couldn't finish for external reasons and as
a consequence left a non-valid JSON file behind.
It also starts addressing #986 so that the protcol section only returns
a non-zero value if a check coundn't be performed or gave results which
weren't clear.
It also fixes a typo where in the TLS 1.3 check a status from the TLS 1.2
check was not correctly interpreted (TLS 1.2 not offered).
This commit fixes#983 by ensuring that the line printed just before calling "return" prints a newline character. It also fixes the problem that no output is sent to the JSON/CSV file in some cases in which no fallback is possible since the server does not support two different protocols below TLSv1.3.
In order to be more consistent with the other output functions having
"svrty" in their name, *_done_best and *_done_good were changed to
*_svrty_best and *_svrty_good.
run_spdy/run_http2 were renamed to run_npn and run_alpn as this is
what is actually being tested. Also the terminal and file output
is now reflecting this.
Also #980 was fixed in a sense that (only) for ALPN the protocol
h2 will get a "good". There will be an additional CSV/JSON line
for this.
This commit fixes#981 by using a while loop instead of a for loop to check each DNS name in the SAN extension, copying the syntax used in certificate_info() to display all of the SANs.
This commit adds code to run_server_defaults() so that in debug mode all of the server's certificates are saved in $TMPDIR in both PEM-encoded format and pretty-print text format.
testssl.sh was recently changed to store the text printout of the host's certificate in a file, $HOSTCERT_TXT, and then use this file in some places rather than calling "$OPENSSL x509 -in $HOSTCERT -text -noout". There was a problem, however, in cases in which the server had more than one certificate (including cases in which the server returned an unrelated certificate when sent a ClientHello w/o SNI), since the contents of $HOSTCERT_TXT was not always being updated whenever $HOSTCERT changed.
This commit fixes that problem by replacing the previous solution with a less ambitious one. In this version, the global variable is eliminated and instead run_server_defaults() stores a text version of each certificate it finds in an array. This value is then passed to certificate_transparency() and certificate_info() for use. It is also passed from certificate_info() to must_staple().
determine_trust() uses the output of "$OPENSSL verify" to determine whether OpenSSL can construct a valid certification path for the server's certificate. If it does not find a string of the form "error [1-9][0-9]? at [0-9]+ depth lookup:" in the output, then it assumes that validation was successful. In current versions of OpenSSL, when this error is created it is printed to stdout, but in OpenSSL 1.1.1 is it printed to stderr. Since testssl.sh only checks the output sent to stdout, it incorrectly treats all certificates as valid if OpenSSL 1.1.1 is used.
This commit fixes the problem by checking the text that is sent to both stdout and stderr.
This commit also fixes a typo in the call to "$OPENSSL verify" which resulted in the environment variables SSL_CERT_DIR and SSL_CERT_FILE not being set to "/dev/null".
In ``must_staple()`` and ``certificate_info()`` were the jsonIDs
changed to OpenSSLi / IETF names so that testssl.sh is more compliant
to the rest of the world. There might be still space for improvements
are far as common naming scheme is concerned.
The host certificate is now being delivered in JSON and CSV. For
further usage " " needs to be converted back to linefeeds.
Certificate Expiration was renamed to Certificate Validity.
The order of outputting the certificate serial and SHA1 fingerprint
has been swapped.
Also ``certificate_info()`` makes more use of HOSTCERT_TXT.
For certificate start+end time it is now displaying the
time on UTC and without mentioning the timezone twice.
Also if neither CRL nor OCSP URI is provided it'll appear
on the screen below those two checks. JSON/CSV has then an
additional finding
HOSTCERT_TXT is now generated each time a HOSTCERT is
written. For now it is just being used in ``read_sigalg_from_file()``.
More to come.
Also in JSON output the start date and end date of the certificate
are now in separate objects. (the time format could need some polishing though).
In the output created by certificate_info(), the "Server key size" line labels an elliptic curve key as "ECDSA." This commit changes the label to "EC." I believe this a more correct label since ECDSA is a signature algorithm, not a key type. Also, while unlikely, an elliptic curve key in a certificate may be used for ECDH (e.g, in TLS_ECDH_RSA_WITH_AES_128_CBC_SHA) rather than ECDSA.
Note that this does not impact the JSON or CSV output, since the corresponding fileout command already uses "$cert_keysize EC bits"
This commit adds TLSv1.3 support for run_server_defaults(). It uses get_server_certificate() to run separate checks for RSA and ECDSA certificates by sending TLSv1.3 ClientHello messages with different signature_algorithms values. A similar change is made to certificate_transparency() in order to check for certificate transparency support for certificates returned over TLSv1.3. It also modifies the check for certificates offered without SNI by including an option to use tls_sockets() with servers that support TLSv1.3 if OpenSSL does not support TLSv1.3.
In TLSv1.3, if a HelloRetryRequest needs to be sent and the call to tls_sockets() includes additional request extensions (other than key_share or cookie), then resend_if_hello_retry_request() adds an extra comma between extensions in the value sent to socksend_tls_clienthello(), which creates errors. This commit fixes the problem by removing the extra comma.
Dirk
David Cooper
Alexandre Teyar