According to https://openssl-library.org/roadmap/index.html, OpenSSL 4 is scheduled to be released in April 2026. This commit modifies code that checks $OPENSSL version numbers so that versions 4 and above will be recognized.
This commit modifies testssl.sh so that run_server_defaults() prints the server's supported TLS extensions sorted by extension number rather than listing them in the order in which they were found.
In order to simplify the sorting of the extensions, this commit changes $TLS_EXTENSIONS from a string to an array. In February 2017 comments were added (925e1061b2) saying that it would be $TLS_EXTENSIONS were an array. So, this commit addresses those comments. However, it is possible that the reason for those comments no longer apply.
With the current master branch of OpenSSL (3.5.0-dev), the output that is provided by s_client has changed in the case of a cipher suite that uses an ephemeral key. Rather than preceding the ephemeral key information with "Server Temp Key: ", it is now preceded by either "Peer Temp Key:" or "Negotiated TLS1.3 group:". This commit modifies the lines that extract ephemeral key information from OpenSSL responses to accept any of these strings.
In order to avoid delays due to lookups of the hostname "invalid." we
just avoid to use "invalid." whenever possible. :-)
Therefore we just do a test before whether `$OPENSSL s_client 2>&1 </dev/null`
does a connect, except when a WSL system is discovered. If that succeeds
we omit the part `-connect invalid.` to check whether the curve is supported.
In some quick testing this in fact improved the startup time.
This seemed to work under Linux with several openssl and one LibreSSL binary.
More testing would be required, especially e.g. under WSL / WSL2.
Also in `sclient_supported()` the `$OPENSSL s_client` statement was changed
in a similar fashion. That worked so far but would need to be observed more
closely.
In order to tell openssl binaries better apart the short banner below the
hash tag signs contain now also the date. That is the short version of the
build date unless it is not supplied which is the case of opensuse. Then
the name contains the date and it's taken from there.
The start and end banner lines have the same length now.
"sieve" was added in a comment and the sequence where sieve appears in
a pattern was trying to match other occurences (i.e. after nntp)
While testing the banners it appeared under Linux that a) the vendor
supplied openssl sometimes hangs during startup when determining the
supported curves using -connect b) a pattern was missing to detect
whether the curve was not supported which falsely labeled all supplied curves
as supported when using /usr/bin/openssl . The pattern for the latter
was added (b). For a) there needs to be a follow up PR to avoid the
long delays.
Three changes:
- added grep for "EV TLS" in addition to "EV SSL", as some issuers are
using this. This grep link actually picks-up most EV policies.
- Added policy detection for 2.23.140.1.1. This is from CA Browser
Forum https://cabforum.org/resources/object-registry/ extended-validation(1).
- Added policy detection for 1.3.6.1.4.1.38064.1.3.1.4 , which is SSL.com's EV policy.
OpenSSL 3.X outputs a different error message than previous versions when $OPENSSL s_client -curves X ... is called with an unsupported curve. This was resulting in the check within find_openssl_binary() adding every curve to $OPENSSL_SUPPORTED_CURVES, even ones that were not supported. This commit changes to check in order to detect the new error message.
