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import python3-3.6.8-39.el8_4

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CentOS Sources 2021-11-02 03:51:19 -04:00 committed by Stepan Oksanichenko
parent b2efcd69f9
commit d72d9cb256
2 changed files with 52 additions and 1 deletions
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40
SOURCES/00366-CVE-2021-3733.patch Normal file
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@ -0,0 +1,40 @@
From 29c669440dddba61d18e1b7fdd57180cae9e4ae3 Mon Sep 17 00:00:00 2001
From: Yeting Li <liyt@ios.ac.cn>
Date: Wed, 7 Apr 2021 19:27:41 +0800
Subject: [PATCH] bpo-43075: Fix ReDoS in urllib AbstractBasicAuthHandler
(GH-24391)
Fix Regular Expression Denial of Service (ReDoS) vulnerability in
urllib.request.AbstractBasicAuthHandler. The ReDoS-vulnerable regex
has quadratic worst-case complexity and it allows cause a denial of
service when identifying crafted invalid RFCs. This ReDoS issue is on
the client side and needs remote attackers to control the HTTP server.
(cherry picked from commit 7215d1ae25525c92b026166f9d5cac85fb1defe1)
Co-authored-by: Yeting Li <liyt@ios.ac.cn>
---
Lib/urllib/request.py | 2 +-
.../next/Security/2021-01-31-05-28-14.bpo-43075.DoAXqO.rst | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)
create mode 100644 Misc/NEWS.d/next/Security/2021-01-31-05-28-14.bpo-43075.DoAXqO.rst
diff --git a/Lib/urllib/request.py b/Lib/urllib/request.py
index 6624e04317ba2..56565405a7097 100644
--- a/Lib/urllib/request.py
+++ b/Lib/urllib/request.py
@@ -947,7 +947,7 @@ class AbstractBasicAuthHandler:
# (single quotes are a violation of the RFC, but appear in the wild)
rx = re.compile('(?:^|,)' # start of the string or ','
'[ \t]*' # optional whitespaces
- '([^ \t]+)' # scheme like "Basic"
+ '([^ \t,]+)' # scheme like "Basic"
'[ \t]+' # mandatory whitespaces
# realm=xxx
# realm='xxx'
diff --git a/Misc/NEWS.d/next/Security/2021-01-31-05-28-14.bpo-43075.DoAXqO.rst b/Misc/NEWS.d/next/Security/2021-01-31-05-28-14.bpo-43075.DoAXqO.rst
new file mode 100644
index 0000000000000..1c9f727e965fb
--- /dev/null
+++ b/Misc/NEWS.d/next/Security/2021-01-31-05-28-14.bpo-43075.DoAXqO.rst
@@ -0,0 +1 @@
+Fix Regular Expression Denial of Service (ReDoS) vulnerability in :class:`urllib.request.AbstractBasicAuthHandler`. The ReDoS-vulnerable regex has quadratic worst-case complexity and it allows cause a denial of service when identifying crafted invalid RFCs. This ReDoS issue is on the client side and needs remote attackers to control the HTTP server.

13
SPECS/python3.spec
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@ -14,7 +14,7 @@ URL: https://www.python.org/
# WARNING When rebasing to a new Python version,
# remember to update the python3-docs package as well
Version: %{pybasever}.8
Release: 38%{?dist}
Release: 39%{?dist}
License: Python
@ -598,6 +598,12 @@ Patch359: 00359-CVE-2021-23336.patch
# Main BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1990860
Patch362: 00362-threading-enumerate-rlock.patch
# 00366 #
# CVE-2021-3733: Denial of service when identifying crafted invalid RFCs
# Upstream: https://bugs.python.org/issue43075
# Tracking bug: https://bugzilla.redhat.com/show_bug.cgi?id=1995234
Patch366: 00366-CVE-2021-3733.patch
# (New patches go here ^^^)
#
# When adding new patches to "python" and "python3" in Fedora, EL, etc.,
@ -926,6 +932,7 @@ git apply %{PATCH351}
%patch357 -p1
%patch359 -p1
%patch362 -p1
%patch366 -p1
# Remove files that should be generated by the build
# (This is after patching, so that we can use patches directly from upstream)
@ -1851,6 +1858,10 @@ fi
# ======================================================
%changelog
* Thu Sep 09 2021 Lumír Balhar <lbalhar@redhat.com> - 3.6.8-39
- Security fix for CVE-2021-3733: Denial of service when identifying crafted invalid RFCs
Resolves: rhbz#1995234
* Wed Aug 11 2021 Charalampos Stratakis <cstratak@redhat.com> - 3.6.8-38
- Fix reentrant call to threading.enumerate()
Resolves: rhbz#1990860