SSL_VERIFYSTATUS ignored
curl and libcurl support "OCSP stapling", also known as the TLS
Certificate Status Request extension (using the
CURLOPT_SSL_VERIFYSTATUS option). When telling curl to use this
feature, it uses that TLS extension to ask for a fresh proof of
the server's certificate's validity. If the server doesn't support
the extension, or fails to provide said proof, curl is expected to
return an error.
Due to a coding mistake, the code that checks for a test success or
failure, ends up always thinking there's valid proof, even when
there is none or if the server doesn't support the TLS extension in
question. Contrary to how it used to function and contrary to how
this feature is documented to work.
This could lead to users not detecting when a server's certificate
goes invalid or otherwise be mislead that the server is in a better
shape than it is in reality.