python3: fix CVE-2023-24329

Backport fix from cpython 3.11 branch.

(From OE-Core rev: 37defd828cc6a8267139928730d766167905d21a)

Signed-off-by: Joe Slater <joe.slater@windriver.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/python/python3/cve-2023-24329.patch

@@ -0,0 +1,50 @@
+From 72d356e3584ebfb8e813a8e9f2cd3dccf233c0d9 Mon Sep 17 00:00:00 2001
+From: "Miss Islington (bot)"
+ <31488909+miss-islington@users.noreply.github.com>
+Date: Sun, 13 Nov 2022 11:00:25 -0800
+Subject: [PATCH] gh-99418: Make urllib.parse.urlparse enforce that a scheme
+ must begin with an alphabetical ASCII character. (GH-99421)
+
+Prevent urllib.parse.urlparse from accepting schemes that don't begin with an alphabetical ASCII character.
+
+RFC 3986 defines a scheme like this: `scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )`
+RFC 2234 defines an ALPHA like this: `ALPHA = %x41-5A / %x61-7A`
+
+The WHATWG URL spec defines a scheme like this:
+`"A URL-scheme string must be one ASCII alpha, followed by zero or more of ASCII alphanumeric, U+002B (+), U+002D (-), and U+002E (.)."`
+(cherry picked from commit 439b9cfaf43080e91c4ad69f312f21fa098befc7)
+
+Co-authored-by: Ben Kallus <49924171+kenballus@users.noreply.github.com>
+--- end original header ---
+
+CVE: CVE-2023-24329
+
+Upstream-Status: Backport [see below]
+
+Taken from https://github.com/python/cpython.git
+commit 72d356e3584ebfb8e813a8e9f2cd3dccf233c0d9
+
+CVE fix extracted; test case and update to NEWS abandoned.
+Defuzzed.
+
+Signed-off-by: Joe Slater <joe.slater@windriver.com>
+---
+ Lib/urllib/parse.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Lib/urllib/parse.py b/Lib/urllib/parse.py
+index 26ddf30..1c53acb 100644
+--- a/Lib/urllib/parse.py
++++ b/Lib/urllib/parse.py
+@@ -469,7 +469,7 @@ def urlsplit(url, scheme='', allow_fragments=True):
+         clear_cache()
+     netloc = query = fragment = ''
+     i = url.find(':')
+-    if i > 0:
++    if i > 0 and url[0].isascii() and url[0].isalpha():
+         for c in url[:i]:
+             if c not in scheme_chars:
+                 break
+-- 
+2.25.1
+