bpo-31399: Let OpenSSL verify hostname and IP address (#3462)

bpo-31399: Let OpenSSL verify hostname and IP

The ssl module now uses OpenSSL's X509_VERIFY_PARAM_set1_host() and
X509_VERIFY_PARAM_set1_ip() API to verify hostname and IP addresses.

* Remove match_hostname calls
* Check for libssl with set1_host, libssl must provide X509_VERIFY_PARAM_set1_host()
* Add documentation for OpenSSL 1.0.2 requirement
* Don't support OpenSSL special mode with a leading dot, e.g. ".example.org" matches "www.example.org". It's not standard conform.
* Add hostname_checks_common_name

Signed-off-by: Christian Heimes <christian@python.org>
This commit is contained in:
Christian Heimes 2018-01-27 15:51:38 +01:00 committed by GitHub
parent 746cc75541
commit 61d478c71c
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GPG key ID: 4AEE18F83AFDEB23
15 changed files with 302 additions and 73 deletions

View file

@ -1375,7 +1375,8 @@ else:
if key_file or cert_file:
context.load_cert_chain(cert_file, key_file)
self._context = context
self._check_hostname = check_hostname
if check_hostname is not None:
self._context.check_hostname = check_hostname
def connect(self):
"Connect to a host on a given (SSL) port."
@ -1389,13 +1390,6 @@ else:
self.sock = self._context.wrap_socket(self.sock,
server_hostname=server_hostname)
if not self._context.check_hostname and self._check_hostname:
try:
ssl.match_hostname(self.sock.getpeercert(), server_hostname)
except Exception:
self.sock.shutdown(socket.SHUT_RDWR)
self.sock.close()
raise
__all__.append("HTTPSConnection")