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Fix for: CVE-2016-0772 python: smtplib StartTLS stripping attack (rhbz#1303647)

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Raise an error when STARTTLS fails.

- rhbz#1303647: https://bugzilla.redhat.com/show_bug.cgi?id=1303647
- rhbz#1346345: https://bugzilla.redhat.com/show_bug.cgi?id=1346345
- Fixed upstream: https://hg.python.org/cpython/rev/d590114c2394
This commit is contained in:
Tomas Orsava 2016-06-17 16:14:12 +02:00
parent afe637f988
commit 35bab9e580
2 changed files with 53 additions and 2 deletions
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35
00210-Raise-an-error-when-STARTTLS-fails.patch Normal file
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@ -0,0 +1,35 @@
From 761db274ca898f8a92348ed5979d3d3c1b0d634a Mon Sep 17 00:00:00 2001
From: Tomas Orsava <torsava@redhat.com>
Date: Fri, 17 Jun 2016 16:08:11 +0200
Subject: [PATCH] Raise an error when STARTTLS fails
CVE-2016-0772 python: smtplib StartTLS stripping attack
rhbz#1303647: https://bugzilla.redhat.com/show_bug.cgi?id=1303647
rhbz#1346345: https://bugzilla.redhat.com/show_bug.cgi?id=1346345
Based on an upstream change by Benjamin Peterson <benjamin@python.org>
- in changeset 101887:d590114c2394 3.4
- https://hg.python.org/cpython/rev/d590114c2394
---
Lib/smtplib.py | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/Lib/smtplib.py b/Lib/smtplib.py
index 4756973..dfbf5f9 100755
--- a/Lib/smtplib.py
+++ b/Lib/smtplib.py
@@ -773,6 +773,11 @@ class SMTP:
self.ehlo_resp = None
self.esmtp_features = {}
self.does_esmtp = 0
+ else:
+ # RFC 3207:
+ # 501 Syntax error (no parameters allowed)
+ # 454 TLS not available due to temporary reason
+ raise SMTPResponseException(resp, reply)
return (resp, reply)
def sendmail(self, from_addr, to_addrs, msg, mail_options=[],
--
2.5.5

20
python3.spec
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@ -140,7 +140,7 @@
Summary: Version 3 of the Python programming language aka Python 3000
Name: python3
Version: %{pybasever}.2
Release: 7%{?dist}
Release: 8%{?dist}
License: Python
Group: Development/Languages
@ -736,6 +736,14 @@ Patch204: 00204-increase-dh-keys-size.patch
# FIXED UPSTREAM
Patch209: 00209-prevent-buffer-overflow-in-zipimport-module.patch
# 00210 #
# CVE-2016-0772 python: smtplib StartTLS stripping attack
# rhbz#1303647: https://bugzilla.redhat.com/show_bug.cgi?id=1303647
# rhbz#1346345: https://bugzilla.redhat.com/show_bug.cgi?id=1346345
# FIXED UPSTREAM: https://hg.python.org/cpython/rev/d590114c2394
# Raise an error when STARTTLS fails
Patch210: 00210-Raise-an-error-when-STARTTLS-fails.patch
# (New patches go here ^^^)
#
# When adding new patches to "python" and "python3" in Fedora 17 onwards,
@ -1026,6 +1034,7 @@ sed -r -i s/'_PIP_VERSION = "[0-9.]+"'/'_PIP_VERSION = "%{pip_version}"'/ Lib/en
%patch204 -p1
%patch209 -p1
%patch210 -p1
# Currently (2010-01-15), http://docs.python.org/library is for 2.6, and there
# are many differences between 2.6 and the Python 3 library.
@ -1916,7 +1925,14 @@ rm -fr %{buildroot}
# ======================================================
%changelog
* Mon Jun 13 2016 Charalampos Stratakis <cstratak@redhat.com> - 3.4.2-6
* Thu Jun 16 2016 Tomas Orsava <torsava@redhat.com> - 3.4.2-8
- Fix for: CVE-2016-0772 python: smtplib StartTLS stripping attack
- Raise an error when STARTTLS fails
- rhbz#1303647: https://bugzilla.redhat.com/show_bug.cgi?id=1303647
- rhbz#1346345: https://bugzilla.redhat.com/show_bug.cgi?id=1346345
- Fixed upstream: https://hg.python.org/cpython/rev/d590114c2394
* Mon Jun 13 2016 Charalampos Stratakis <cstratak@redhat.com> - 3.4.2-7
- Added patch for fixing possible integer overflow and heap corruption in zipimporter.get_data()
* Thu Jul 09 2015 Thomas Spura <tomspur@fedoraproject.org> - 3.4.2-6