From e4eda4d33f40e6e868d895915facc8c24265b584 Mon Sep 17 00:00:00 2001 From: Antoine Pitrou Date: Fri, 17 Oct 2014 19:28:30 +0200 Subject: Issue #22638: SSLv3 is now disabled throughout the standard library. It can still be enabled by instantiating a SSLContext manually. --- Lib/ssl.py | 3 +++ Misc/NEWS | 3 +++ 2 files changed, 6 insertions(+) diff --git a/Lib/ssl.py b/Lib/ssl.py index 8854e37..d74b340 100644 --- a/Lib/ssl.py +++ b/Lib/ssl.py @@ -454,6 +454,9 @@ def _create_stdlib_context(protocol=PROTOCOL_SSLv23, *, cert_reqs=None, context = SSLContext(protocol) # SSLv2 considered harmful. context.options |= OP_NO_SSLv2 + # SSLv3 has problematic security and is only required for really old + # clients such as IE6 on Windows XP + context.options |= OP_NO_SSLv3 if cert_reqs is not None: context.verify_mode = cert_reqs diff --git a/Misc/NEWS b/Misc/NEWS index fd502b6..d570430 100644 --- a/Misc/NEWS +++ b/Misc/NEWS @@ -178,6 +178,9 @@ Core and Builtins Library ------- +- Issue #22638: SSLv3 is now disabled throughout the standard library. + It can still be enabled by instantiating a SSLContext manually. + - Issue #22641: In asyncio, the default SSL context for client connections is now created using ssl.create_default_context(), for stronger security. -- cgit v0.12