From e49b43bffa693476b4c51cbae97f34bbf2cd2ef5 Mon Sep 17 00:00:00 2001 From: Charalampos Stratakis Date: Fri, 23 Aug 2024 14:58:55 +0200 Subject: [PATCH] Security fix for CVE-2024-8088 Resolves: RHEL-55939 --- ...22905-sanitize-names-in-zipfile-path.patch | 121 ++++++++++++++++++ python3.12.spec | 10 +- 2 files changed, 130 insertions(+), 1 deletion(-) create mode 100644 00436-cve-2024-8088-gh-122905-sanitize-names-in-zipfile-path.patch diff --git a/00436-cve-2024-8088-gh-122905-sanitize-names-in-zipfile-path.patch b/00436-cve-2024-8088-gh-122905-sanitize-names-in-zipfile-path.patch new file mode 100644 index 0000000..c0552ce --- /dev/null +++ b/00436-cve-2024-8088-gh-122905-sanitize-names-in-zipfile-path.patch @@ -0,0 +1,121 @@ +From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 +From: "Miss Islington (bot)" + <31488909+miss-islington@users.noreply.github.com> +Date: Mon, 12 Aug 2024 02:35:17 +0200 +Subject: [PATCH] 00436: [CVE-2024-8088] gh-122905: Sanitize names in + zipfile.Path. + +--- + Lib/test/test_zipfile/_path/test_path.py | 17 +++++ + Lib/zipfile/_path/__init__.py | 64 ++++++++++++++++++- + ...-08-11-14-08-04.gh-issue-122905.7tDsxA.rst | 1 + + 3 files changed, 81 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/_path/test_path.py b/Lib/test/test_zipfile/_path/test_path.py +index 06d5aab69b..90885dbbe3 100644 +--- a/Lib/test/test_zipfile/_path/test_path.py ++++ b/Lib/test/test_zipfile/_path/test_path.py +@@ -577,3 +577,20 @@ def test_getinfo_missing(self, alpharep): + zipfile.Path(alpharep) + with self.assertRaises(KeyError): + alpharep.getinfo('does-not-exist') ++ ++ 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', ++ ] +diff --git a/Lib/zipfile/_path/__init__.py b/Lib/zipfile/_path/__init__.py +index 78c413563b..42f9fded21 100644 +--- a/Lib/zipfile/_path/__init__.py ++++ b/Lib/zipfile/_path/__init__.py +@@ -83,7 +83,69 @@ def __setstate__(self, state): + super().__init__(*args, **kwargs) + + +-class CompleteDirs(InitializedState, zipfile.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(InitializedState, SanitizedNames, zipfile.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. diff --git a/python3.12.spec b/python3.12.spec index 19f9938..da9bae8 100644 --- a/python3.12.spec +++ b/python3.12.spec @@ -20,7 +20,7 @@ URL: https://www.python.org/ #global prerel ... %global upstream_version %{general_version}%{?prerel} Version: %{general_version}%{?prerel:~%{prerel}} -Release: 1%{?dist} +Release: 2%{?dist} License: Python-2.0.1 @@ -398,6 +398,10 @@ Patch415: 00415-cve-2023-27043-gh-102988-reject-malformed-addresses-in-email-par # CVE-2023-52425. Future versions of Expat may be more reactive. Patch422: 00422-fix-tests-for-xmlpullparser-with-expat-2-6-0.patch +# 00436 # c76cc2aa3a2c30375ade4859b732ada851cc89ed +# [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., @@ -1888,6 +1892,10 @@ fi # ====================================================== %changelog +* Fri Aug 23 2024 Charalampos Stratakis - 3.12.5-2 +- Security fix for CVE-2024-8088 +Resolves: RHEL-55939 + * Wed Aug 07 2024 Tomáš Hrnčiar - 3.12.5-1 - Update to 3.12.5 - Security fix for CVE-2024-6923