From 04ea4b1e6cb9e05044b0ca821ce28074a1c8472e Mon Sep 17 00:00:00 2001
From: Lumir Balhar <lbalhar@redhat.com>
Date: Tue, 12 Dec 2023 10:26:43 +0100
Subject: [PATCH] Security fix for CVE-2023-45803

Resolves: RHEL-16874
---
 CVE-2023-45803.patch | 94 ++++++++++++++++++++++++++++++++++++++++++++
 python-urllib3.spec  | 12 +++++-
 2 files changed, 105 insertions(+), 1 deletion(-)
 create mode 100644 CVE-2023-45803.patch

diff --git a/CVE-2023-45803.patch b/CVE-2023-45803.patch
new file mode 100644
index 0000000..a639836
--- /dev/null
+++ b/CVE-2023-45803.patch
@@ -0,0 +1,94 @@
+From d71ab28f104cac824c6036fa9b35cc2e2dd19bf8 Mon Sep 17 00:00:00 2001
+From: Lumir Balhar <lbalhar@redhat.com>
+Date: Tue, 12 Dec 2023 11:06:20 +0100
+Subject: [PATCH] Security fix for CVE-2023-45803
+
+---
+ src/urllib3/_collections.py   | 18 ++++++++++++++++++
+ src/urllib3/connectionpool.py |  5 +++++
+ src/urllib3/poolmanager.py    |  7 +++++--
+ 3 files changed, 28 insertions(+), 2 deletions(-)
+
+diff --git a/src/urllib3/_collections.py b/src/urllib3/_collections.py
+index da9857e..bceb845 100644
+--- a/src/urllib3/_collections.py
++++ b/src/urllib3/_collections.py
+@@ -268,6 +268,24 @@ class HTTPHeaderDict(MutableMapping):
+         else:
+             return vals[1:]
+ 
++    def _prepare_for_method_change(self):
++        """
++        Remove content-specific header fields before changing the request
++        method to GET or HEAD according to RFC 9110, Section 15.4.
++        """
++        content_specific_headers = [
++            "Content-Encoding",
++            "Content-Language",
++            "Content-Location",
++            "Content-Type",
++            "Content-Length",
++            "Digest",
++            "Last-Modified",
++        ]
++        for header in content_specific_headers:
++            self.discard(header)
++        return self
++
+     # Backwards compatibility for httplib
+     getheaders = getlist
+     getallmatchingheaders = getlist
+diff --git a/src/urllib3/connectionpool.py b/src/urllib3/connectionpool.py
+index 4018321..8f9ebb5 100644
+--- a/src/urllib3/connectionpool.py
++++ b/src/urllib3/connectionpool.py
+@@ -36,6 +36,7 @@ from .exceptions import (
+ from .packages import six
+ from .packages.six.moves import queue
+ from .packages.ssl_match_hostname import CertificateError
++from ._collections import HTTPHeaderDict
+ from .request import RequestMethods
+ from .response import HTTPResponse
+ from .util.connection import is_connection_dropped
+@@ -800,7 +801,11 @@ class HTTPConnectionPool(ConnectionPool, RequestMethods):
+         redirect_location = redirect and response.get_redirect_location()
+         if redirect_location:
+             if response.status == 303:
++                # Change the method according to RFC 9110, Section 15.4.4.
+                 method = "GET"
++                # And lose the body not to transfer anything sensitive.
++                body = None
++                headers = HTTPHeaderDict(headers)._prepare_for_method_change()
+ 
+             try:
+                 retries = retries.increment(method, url, response=response, _pool=self)
+diff --git a/src/urllib3/poolmanager.py b/src/urllib3/poolmanager.py
+index 3a31a28..7d4c22c 100644
+--- a/src/urllib3/poolmanager.py
++++ b/src/urllib3/poolmanager.py
+@@ -4,7 +4,7 @@ import collections
+ import functools
+ import logging
+ 
+-from ._collections import RecentlyUsedContainer
++from ._collections import HTTPHeaderDict, RecentlyUsedContainer
+ from .connectionpool import HTTPConnectionPool, HTTPSConnectionPool, port_by_scheme
+ from .exceptions import (
+     LocationValueError,
+@@ -381,9 +381,12 @@ class PoolManager(RequestMethods):
+         # Support relative URLs for redirecting.
+         redirect_location = urljoin(url, redirect_location)
+ 
+-        # RFC 7231, Section 6.4.4
+         if response.status == 303:
++            # Change the method according to RFC 9110, Section 15.4.4.
+             method = "GET"
++            # And lose the body not to transfer anything sensitive.
++            kw["body"] = None
++            kw["headers"] = HTTPHeaderDict(kw["headers"])._prepare_for_method_change()
+ 
+         retries = kw.get("retries")
+         if not isinstance(retries, Retry):
+-- 
+2.43.0
+
diff --git a/python-urllib3.spec b/python-urllib3.spec
index fac5f50..02d25e5 100644
--- a/python-urllib3.spec
+++ b/python-urllib3.spec
@@ -6,7 +6,7 @@
 
 Name:           python-%{srcname}
 Version:        1.26.5
-Release:        4%{?dist}
+Release:        5%{?dist}
 Summary:        Python HTTP library with thread-safe connection pooling and file post
 
 License:        MIT
@@ -26,6 +26,12 @@ BuildArch:      noarch
 # Upstream fix: https://github.com/urllib3/urllib3/commit/01220354d389cd05474713f8c982d05c9b17aafb
 Patch1: CVE-2023-43804.patch
 
+# CVE-2023-45803
+# Remove HTTP request body when request method is changed.
+# Tracking bug: https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2023-45803
+# Upstream fix: https://github.com/urllib3/urllib3/commit/4e98d57809dacab1cbe625fddeec1a290c478ea9
+Patch2: CVE-2023-45803.patch
+
 %description
 Python HTTP module with connection pooling and file POST abilities.
 
@@ -128,6 +134,10 @@ ln -s %{python3_sitelib}/__pycache__/six.cpython-%{python3_version_nodots}.pyc \
 
 
 %changelog
+* Tue Dec 12 2023 Lumír Balhar <lbalhar@redhat.com> - 1.26.5-5
+- Security fix for CVE-2023-45803
+Resolves: RHEL-16874
+
 * Thu Oct 12 2023 Lumír Balhar <lbalhar@redhat.com> - 1.26.5-4
 - Security fix for CVE-2023-43804
 Resolves: RHEL-12001