forked from solderpunk/AV-98
TLS hardening.
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15
av98.py
15
av98.py
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@ -26,6 +26,7 @@ import sys
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import tempfile
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import urllib.parse
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import ssl
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import sys
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import time
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# Command abbreviations
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@ -373,10 +374,18 @@ Slow internet connection? Use 'set timeout' to be more patient.""")
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context = ssl.SSLContext()
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context.check_hostname = False
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context.verify_mode = ssl.CERT_NONE
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# Impose minimum TLS version
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if sys.version_info.minor == 7:
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context.minimum_version = ssl.TLSVersion.TLSv1_2
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else:
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context.options | ssl.OP_NO_TLSv1_1
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context.options | ssl.OP_NO_SSLv3
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context.options | ssl.OP_NO_SSLv2
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context.set_ciphers("AES+DHE:AES+ECDHE:CHACHA20+DHE:CHACHA20+ECDHE:!SHA1:@STRENGTH")
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#print(context.get_ciphers())
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s = context.wrap_socket(s, server_hostname = gi.host)
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try:
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s.connect(address[4])
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self._debug("Established {} connection.".format(s.version()))
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break
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except OSError as e:
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err = e
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@ -385,6 +394,10 @@ Slow internet connection? Use 'set timeout' to be more patient.""")
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# bubble up the exception from the last attempt and deny
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# knowledge of earlier failures.
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raise err
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self._debug("Established {} connection.".format(s.version()))
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self._debug("Cipher is: {}.".format(s.cipher()))
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# Send request and wrap response in a file descriptor
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self._debug("Sending %s<CRLF>" % gi.url)
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s.sendall((gi.url + CRLF).encode("UTF-8"))
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