[Python-checkins] cpython (3.4): always set OP_NO_SSLv3 by default (closes #25530)
benjamin.peterson
python-checkins at python.org
Thu Nov 12 01:45:47 EST 2015
https://hg.python.org/cpython/rev/56f64ec9259f
changeset: 99071:56f64ec9259f
branch: 3.4
parent: 99067:aabe273b20ab
user: Benjamin Peterson <benjamin at python.org>
date: Wed Nov 11 22:38:41 2015 -0800
summary:
always set OP_NO_SSLv3 by default (closes #25530)
files:
Lib/test/test_ssl.py | 18 +++++++++---------
Misc/NEWS | 3 +++
Modules/_ssl.c | 2 ++
3 files changed, 14 insertions(+), 9 deletions(-)
diff --git a/Lib/test/test_ssl.py b/Lib/test/test_ssl.py
--- a/Lib/test/test_ssl.py
+++ b/Lib/test/test_ssl.py
@@ -674,11 +674,11 @@
@skip_if_broken_ubuntu_ssl
def test_options(self):
ctx = ssl.SSLContext(ssl.PROTOCOL_TLSv1)
- # OP_ALL | OP_NO_SSLv2 is the default value
- self.assertEqual(ssl.OP_ALL | ssl.OP_NO_SSLv2,
+ # OP_ALL | OP_NO_SSLv2 | OP_NO_SSLv3 is the default value
+ self.assertEqual(ssl.OP_ALL | ssl.OP_NO_SSLv2 | ssl.OP_NO_SSLv3,
ctx.options)
- ctx.options |= ssl.OP_NO_SSLv3
- self.assertEqual(ssl.OP_ALL | ssl.OP_NO_SSLv2 | ssl.OP_NO_SSLv3,
+ ctx.options |= ssl.OP_NO_TLSv1
+ self.assertEqual(ssl.OP_ALL | ssl.OP_NO_SSLv2 | ssl.OP_NO_SSLv3 | ssl.OP_NO_TLSv1,
ctx.options)
if can_clear_options():
ctx.options = (ctx.options & ~ssl.OP_NO_SSLv2) | ssl.OP_NO_TLSv1
@@ -2172,17 +2172,17 @@
" SSL2 client to SSL23 server test unexpectedly failed:\n %s\n"
% str(x))
if hasattr(ssl, 'PROTOCOL_SSLv3'):
- try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv3, True)
+ try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv3, False)
try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv23, True)
try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_TLSv1, True)
if hasattr(ssl, 'PROTOCOL_SSLv3'):
- try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv3, True, ssl.CERT_OPTIONAL)
+ try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv3, False, ssl.CERT_OPTIONAL)
try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv23, True, ssl.CERT_OPTIONAL)
try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_TLSv1, True, ssl.CERT_OPTIONAL)
if hasattr(ssl, 'PROTOCOL_SSLv3'):
- try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv3, True, ssl.CERT_REQUIRED)
+ try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv3, False, ssl.CERT_REQUIRED)
try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv23, True, ssl.CERT_REQUIRED)
try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_TLSv1, True, ssl.CERT_REQUIRED)
@@ -2214,8 +2214,8 @@
try_protocol_combo(ssl.PROTOCOL_SSLv3, ssl.PROTOCOL_TLSv1, False)
if no_sslv2_implies_sslv3_hello():
# No SSLv2 => client will use an SSLv3 hello on recent OpenSSLs
- try_protocol_combo(ssl.PROTOCOL_SSLv3, ssl.PROTOCOL_SSLv23, True,
- client_options=ssl.OP_NO_SSLv2)
+ try_protocol_combo(ssl.PROTOCOL_SSLv3, ssl.PROTOCOL_SSLv23,
+ False, client_options=ssl.OP_NO_SSLv2)
@skip_if_broken_ubuntu_ssl
def test_protocol_tlsv1(self):
diff --git a/Misc/NEWS b/Misc/NEWS
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -107,6 +107,9 @@
at the end if the FileInput was opened with binary mode.
Patch by Ryosuke Ito.
+- Issue #25530: Disable the vulnerable SSLv3 protocol by default when creating
+ ssl.SSLContext.
+
- Issue #25569: Fix memory leak in SSLSocket.getpeercert().
- Issue #21827: Fixed textwrap.dedent() for the case when largest common
diff --git a/Modules/_ssl.c b/Modules/_ssl.c
--- a/Modules/_ssl.c
+++ b/Modules/_ssl.c
@@ -2037,6 +2037,8 @@
options = SSL_OP_ALL & ~SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS;
if (proto_version != PY_SSL_VERSION_SSL2)
options |= SSL_OP_NO_SSLv2;
+ if (proto_version != PY_SSL_VERSION_SSL3)
+ options |= SSL_OP_NO_SSLv3;
SSL_CTX_set_options(self->ctx, options);
#ifndef OPENSSL_NO_ECDH
--
Repository URL: https://hg.python.org/cpython
More information about the Python-checkins
mailing list