Security fix for CVE-2024-8088
Resolves: RHEL-55959
This commit is contained in:
Charalampos Stratakis
parent
48f7cc060e
commit
45f10eb791
@ -0,0 +1,128 @@
|
||||
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
||||
From: "Jason R. Coombs" <jaraco@jaraco.com>
|
||||
Date: Mon, 19 Aug 2024 19:28:20 -0400
|
||||
Subject: [PATCH] 00436: [CVE-2024-8088] gh-122905: Sanitize names in
|
||||
zipfile.Path.
|
||||
|
||||
Co-authored-by: Jason R. Coombs <jaraco@jaraco.com>
|
||||
---
|
||||
Lib/test/test_zipfile.py | 17 ++++++
|
||||
Lib/zipfile.py | 61 ++++++++++++++++++-
|
||||
...-08-11-14-08-04.gh-issue-122905.7tDsxA.rst | 1 +
|
||||
3 files changed, 78 insertions(+), 1 deletion(-)
|
||||
create mode 100644 Misc/NEWS.d/next/Library/2024-08-11-14-08-04.gh-issue-122905.7tDsxA.rst
|
||||
|
||||
diff --git a/Lib/test/test_zipfile.py b/Lib/test/test_zipfile.py
|
||||
index 4de6f379a4..8bdc7a1b7d 100644
|
||||
--- a/Lib/test/test_zipfile.py
|
||||
+++ b/Lib/test/test_zipfile.py
|
||||
@@ -3651,6 +3651,23 @@ def test_extract_orig_with_implied_dirs(self, alpharep):
|
||||
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 EncodedMetadataTests(unittest.TestCase):
|
||||
file_names = ['\u4e00', '\u4e8c', '\u4e09'] # Han 'one', 'two', 'three'
|
||||
diff --git a/Lib/zipfile.py b/Lib/zipfile.py
|
||||
index 86829abce4..b7bf9ef7e3 100644
|
||||
--- a/Lib/zipfile.py
|
||||
+++ b/Lib/zipfile.py
|
||||
@@ -9,6 +9,7 @@
|
||||
import itertools
|
||||
import os
|
||||
import posixpath
|
||||
+import re
|
||||
import shutil
|
||||
import stat
|
||||
import struct
|
||||
@@ -2243,7 +2244,65 @@ 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.
|
||||
diff --git a/Misc/NEWS.d/next/Library/2024-08-11-14-08-04.gh-issue-122905.7tDsxA.rst b/Misc/NEWS.d/next/Library/2024-08-11-14-08-04.gh-issue-122905.7tDsxA.rst
|
||||
new file mode 100644
|
||||
index 0000000000..1be44c906c
|
||||
--- /dev/null
|
||||
+++ b/Misc/NEWS.d/next/Library/2024-08-11-14-08-04.gh-issue-122905.7tDsxA.rst
|
||||
@@ -0,0 +1 @@
|
||||
+:class:`zipfile.Path` objects now sanitize names from the zipfile.
|
||||
@ -20,7 +20,7 @@ URL: https://www.python.org/
|
||||
#global prerel ...
|
||||
%global upstream_version %{general_version}%{?prerel}
|
||||
Version: %{general_version}%{?prerel:~%{prerel}}
|
||||
Release: 6%{?dist}
|
||||
Release: 7%{?dist}
|
||||
License: Python
|
||||
|
||||
|
||||
@ -394,6 +394,10 @@ Patch431: 00431-CVE-2024-4032.patch
|
||||
# about newlines.
|
||||
Patch435: 00435-gh-121650-encode-newlines-in-headers-and-verify-headers-are-sound-gh-122233.patch
|
||||
|
||||
# 00436 # 1acd6db660ad1124ab7ae449a841608dd9d9062d
|
||||
# [CVE-2024-8088] gh-122905: Sanitize names in zipfile.Path.
|
||||
Patch436: 00436-cve-2024-8088-gh-122905-sanitize-names-in-zipfile-path.patch
|
||||
|
||||
# (New patches go here ^^^)
|
||||
#
|
||||
# When adding new patches to "python" and "python3" in Fedora, EL, etc.,
|
||||
@ -1672,6 +1676,10 @@ CheckPython optimized
|
||||
# ======================================================
|
||||
|
||||
%changelog
|
||||
* Fri Aug 23 2024 Charalampos Stratakis <cstratak@redhat.com> - 3.11.9-7
|
||||
- Security fix for CVE-2024-8088
|
||||
Resolves: RHEL-55959
|
||||
|
||||
* Thu Aug 15 2024 Charalampos Stratakis <cstratak@redhat.com> - 3.11.9-6
|
||||
- Security fix for CVE-2024-6923
|
||||
Resolves: RHEL-53038
|
||||
|
||||
Loading…
Reference in New Issue
Block a user