python3: Security fix for CVE-2024-8088

CVE fixed:
- CVE-2024-8088: python: cpython: denial of service in zipfile
Upstream-Status: Backport from e0264a6111

(From OE-Core rev: 295addec33c83443423a3ef87905c3a70f44a4e7)

Signed-off-by: Rohini Sangam <rsangam@mvista.com>
Signed-off-by: Siddharth Doshi <sdoshi@mvista.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

meta/recipes-devtools/python/python3/CVE-2024-8088.patch

@@ -0,0 +1,124 @@
+From e0264a61119d551658d9445af38323ba94fc16db Mon Sep 17 00:00:00 2001
+From: "Jason R. Coombs" <jaraco@jaraco.com>
+Date: Thu, 22 Aug 2024 19:24:33 -0400
+Subject: [PATCH] CVE-2024-8088: Sanitize names in zipfile.Path. (GH-122906)
+
+Upstream-Status: Backport from https://github.com/python/cpython/commit/e0264a61119d551658d9445af38323ba94fc16db
+CVE: CVE-2024-8088
+
+Signed-off-by: Rohini Sangam <rsangam@mvista.com>
+---
+ Lib/test/test_zipfile.py   | 17 ++++++
+ Lib/zipfile.py             | 61 ++++++++++++++++++-
+ 2 files changed, 77 insertions(+), 1 deletion(-)
+
+diff --git a/Lib/test/test_zipfile.py b/Lib/test/test_zipfile.py
+index 32c0170..a60dc11 100644
+--- a/Lib/test/test_zipfile.py
++++ b/Lib/test/test_zipfile.py
+@@ -3280,6 +3280,23 @@ with zipfile.ZipFile(io.BytesIO(), "w") as zf:
+         zipfile.Path(zf)
+         zf.extractall(source_path.parent)
+ 
++    def test_malformed_paths(self):
++        """
++        Path should handle malformed paths.
++        """
++        data = io.BytesIO()
++        zf = zipfile.ZipFile(data, "w")
++        zf.writestr("/one-slash.txt", b"content")
++        zf.writestr("//two-slash.txt", b"content")
++        zf.writestr("../parent.txt", b"content")
++        zf.filename = ''
++        root = zipfile.Path(zf)
++        assert list(map(str, root.iterdir())) == [
++            'one-slash.txt',
++            'two-slash.txt',
++            'parent.txt',
++        ]
++
+ 
+ class StripExtraTests(unittest.TestCase):
+     # Note: all of the "z" characters are technically invalid, but up
+diff --git a/Lib/zipfile.py b/Lib/zipfile.py
+index 7d18bc2..cbac8d9 100644
+--- a/Lib/zipfile.py
++++ b/Lib/zipfile.py
+@@ -9,6 +9,7 @@ import io
+ import itertools
+ import os
+ import posixpath
++import re
+ import shutil
+ import stat
+ import struct
+@@ -2182,7 +2183,65 @@ def _difference(minuend, subtrahend):
+     return itertools.filterfalse(set(subtrahend).__contains__, minuend)
+ 
+ 
+-class CompleteDirs(ZipFile):
++class SanitizedNames:
++    """
++    ZipFile mix-in to ensure names are sanitized.
++    """
++
++    def namelist(self):
++        return list(map(self._sanitize, super().namelist()))
++
++    @staticmethod
++    def _sanitize(name):
++        r"""
++        Ensure a relative path with posix separators and no dot names.
++        Modeled after
++        https://github.com/python/cpython/blob/bcc1be39cb1d04ad9fc0bd1b9193d3972835a57c/Lib/zipfile/__init__.py#L1799-L1813
++        but provides consistent cross-platform behavior.
++        >>> san = SanitizedNames._sanitize
++        >>> san('/foo/bar')
++        'foo/bar'
++        >>> san('//foo.txt')
++        'foo.txt'
++        >>> san('foo/.././bar.txt')
++        'foo/bar.txt'
++        >>> san('foo../.bar.txt')
++        'foo../.bar.txt'
++        >>> san('\\foo\\bar.txt')
++        'foo/bar.txt'
++        >>> san('D:\\foo.txt')
++        'D/foo.txt'
++        >>> san('\\\\server\\share\\file.txt')
++        'server/share/file.txt'
++        >>> san('\\\\?\\GLOBALROOT\\Volume3')
++        '?/GLOBALROOT/Volume3'
++        >>> san('\\\\.\\PhysicalDrive1\\root')
++        'PhysicalDrive1/root'
++        Retain any trailing slash.
++        >>> san('abc/')
++        'abc/'
++        Raises a ValueError if the result is empty.
++        >>> san('../..')
++        Traceback (most recent call last):
++        ...
++        ValueError: Empty filename
++        """
++
++        def allowed(part):
++            return part and part not in {'..', '.'}
++
++        # Remove the drive letter.
++        # Don't use ntpath.splitdrive, because that also strips UNC paths
++        bare = re.sub('^([A-Z]):', r'\1', name, flags=re.IGNORECASE)
++        clean = bare.replace('\\', '/')
++        parts = clean.split('/')
++        joined = '/'.join(filter(allowed, parts))
++        if not joined:
++            raise ValueError("Empty filename")
++        return joined + '/' * name.endswith('/')
++
++
++class CompleteDirs(SanitizedNames, ZipFile):
+     """
+     A ZipFile subclass that ensures that implied directories
+     are always included in the namelist.
+-- 
+2.35.7
+