diff -Nru python3.8-3.8.10/debian/changelog python3.8-3.8.10/debian/changelog --- python3.8-3.8.10/debian/changelog 2023-11-22 10:22:35.000000000 +0000 +++ python3.8-3.8.10/debian/changelog 2024-03-25 10:42:49.000000000 +0000 @@ -1,3 +1,16 @@ +python3.8 (3.8.10-0ubuntu1~20.04.10) focal-security; urgency=medium + + * SECURITY UPDATE: incorrect permission assignment + - debian/patches/CVE-2023-6597.patch: fix symlink bug in cleanup. + - CVE-2023-6597 + * SECURITY UPDATE: zipbomb DoS attack + - debian/patches/CVE-2024-0450.patch: raise BadZipFile when trying + to read an entry that overlaps with other entry or central + directory. + - CVE-2024-0450 + + -- Allen Huang Mon, 25 Mar 2024 10:42:49 +0000 + python3.8 (3.8.10-0ubuntu1~20.04.9) focal-security; urgency=medium * SECURITY UPDATE: TLS handshake bypass diff -Nru python3.8-3.8.10/debian/patches/CVE-2023-6597.patch python3.8-3.8.10/debian/patches/CVE-2023-6597.patch --- python3.8-3.8.10/debian/patches/CVE-2023-6597.patch 1970-01-01 00:00:00.000000000 +0000 +++ python3.8-3.8.10/debian/patches/CVE-2023-6597.patch 2024-03-25 10:42:49.000000000 +0000 @@ -0,0 +1,204 @@ +From 3ed752e27b85711d9779c26760a568cbfc9d9a84 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?S=C3=B8ren=20L=C3=B8vborg?= +Date: Thu, 7 Dec 2023 17:04:06 +0100 +Subject: [PATCH] [3.8] gh-91133: tempfile.TemporaryDirectory: fix symlink bug + in cleanup (GH-99930) (cherry picked from commit + 81c16cd94ec38d61aa478b9a452436dc3b1b524d) +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Co-authored-by: Søren Løvborg +Co-authored-by: Serhiy Storchaka +--- + Lib/tempfile.py | 27 +- + Lib/test/test_tempfile.py | 117 +++++++++- + Misc/NEWS.d/next/Library/2022-12-01-16-57-44.gh-issue-91133.LKMVCV.rst | 2 + 3 files changed, 136 insertions(+), 10 deletions(-) + create mode 100644 Misc/NEWS.d/next/Library/2022-12-01-16-57-44.gh-issue-91133.LKMVCV.rst + +--- a/Lib/tempfile.py ++++ b/Lib/tempfile.py +@@ -402,6 +402,22 @@ + raise FileExistsError(_errno.EEXIST, + "No usable temporary file name found") + ++def _dont_follow_symlinks(func, path, *args): ++ # Pass follow_symlinks=False, unless not supported on this platform. ++ if func in _os.supports_follow_symlinks: ++ func(path, *args, follow_symlinks=False) ++ elif _os.name == 'nt' or not _os.path.islink(path): ++ func(path, *args) ++ ++def _resetperms(path): ++ try: ++ chflags = _os.chflags ++ except AttributeError: ++ pass ++ else: ++ _dont_follow_symlinks(chflags, path, 0) ++ _dont_follow_symlinks(_os.chmod, path, 0o700) ++ + + # User visible interfaces. + +@@ -925,17 +941,10 @@ + def _rmtree(cls, name): + def onerror(func, path, exc_info): + if issubclass(exc_info[0], PermissionError): +- def resetperms(path): +- try: +- _os.chflags(path, 0) +- except AttributeError: +- pass +- _os.chmod(path, 0o700) +- + try: + if path != name: +- resetperms(_os.path.dirname(path)) +- resetperms(path) ++ _resetperms(_os.path.dirname(path)) ++ _resetperms(path) + + try: + _os.unlink(path) +--- a/Lib/test/test_tempfile.py ++++ b/Lib/test/test_tempfile.py +@@ -1377,6 +1377,103 @@ + "were deleted") + d2.cleanup() + ++ @support.skip_unless_symlink ++ def test_cleanup_with_symlink_modes(self): ++ # cleanup() should not follow symlinks when fixing mode bits (#91133) ++ with self.do_create(recurse=0) as d2: ++ file1 = os.path.join(d2, 'file1') ++ open(file1, 'wb').close() ++ dir1 = os.path.join(d2, 'dir1') ++ os.mkdir(dir1) ++ for mode in range(8): ++ mode <<= 6 ++ with self.subTest(mode=format(mode, '03o')): ++ def test(target, target_is_directory): ++ d1 = self.do_create(recurse=0) ++ symlink = os.path.join(d1.name, 'symlink') ++ os.symlink(target, symlink, ++ target_is_directory=target_is_directory) ++ try: ++ os.chmod(symlink, mode, follow_symlinks=False) ++ except NotImplementedError: ++ pass ++ try: ++ os.chmod(symlink, mode) ++ except FileNotFoundError: ++ pass ++ os.chmod(d1.name, mode) ++ d1.cleanup() ++ self.assertFalse(os.path.exists(d1.name)) ++ ++ with self.subTest('nonexisting file'): ++ test('nonexisting', target_is_directory=False) ++ with self.subTest('nonexisting dir'): ++ test('nonexisting', target_is_directory=True) ++ ++ with self.subTest('existing file'): ++ os.chmod(file1, mode) ++ old_mode = os.stat(file1).st_mode ++ test(file1, target_is_directory=False) ++ new_mode = os.stat(file1).st_mode ++ self.assertEqual(new_mode, old_mode, ++ '%03o != %03o' % (new_mode, old_mode)) ++ ++ with self.subTest('existing dir'): ++ os.chmod(dir1, mode) ++ old_mode = os.stat(dir1).st_mode ++ test(dir1, target_is_directory=True) ++ new_mode = os.stat(dir1).st_mode ++ self.assertEqual(new_mode, old_mode, ++ '%03o != %03o' % (new_mode, old_mode)) ++ ++ @unittest.skipUnless(hasattr(os, 'chflags'), 'requires os.chflags') ++ @support.skip_unless_symlink ++ def test_cleanup_with_symlink_flags(self): ++ # cleanup() should not follow symlinks when fixing flags (#91133) ++ flags = stat.UF_IMMUTABLE | stat.UF_NOUNLINK ++ self.check_flags(flags) ++ ++ with self.do_create(recurse=0) as d2: ++ file1 = os.path.join(d2, 'file1') ++ open(file1, 'wb').close() ++ dir1 = os.path.join(d2, 'dir1') ++ os.mkdir(dir1) ++ def test(target, target_is_directory): ++ d1 = self.do_create(recurse=0) ++ symlink = os.path.join(d1.name, 'symlink') ++ os.symlink(target, symlink, ++ target_is_directory=target_is_directory) ++ try: ++ os.chflags(symlink, flags, follow_symlinks=False) ++ except NotImplementedError: ++ pass ++ try: ++ os.chflags(symlink, flags) ++ except FileNotFoundError: ++ pass ++ os.chflags(d1.name, flags) ++ d1.cleanup() ++ self.assertFalse(os.path.exists(d1.name)) ++ ++ with self.subTest('nonexisting file'): ++ test('nonexisting', target_is_directory=False) ++ with self.subTest('nonexisting dir'): ++ test('nonexisting', target_is_directory=True) ++ ++ with self.subTest('existing file'): ++ os.chflags(file1, flags) ++ old_flags = os.stat(file1).st_flags ++ test(file1, target_is_directory=False) ++ new_flags = os.stat(file1).st_flags ++ self.assertEqual(new_flags, old_flags) ++ ++ with self.subTest('existing dir'): ++ os.chflags(dir1, flags) ++ old_flags = os.stat(dir1).st_flags ++ test(dir1, target_is_directory=True) ++ new_flags = os.stat(dir1).st_flags ++ self.assertEqual(new_flags, old_flags) ++ + @support.cpython_only + def test_del_on_collection(self): + # A TemporaryDirectory is deleted when garbage collected +@@ -1489,9 +1586,27 @@ + d.cleanup() + self.assertFalse(os.path.exists(d.name)) + +- @unittest.skipUnless(hasattr(os, 'chflags'), 'requires os.lchflags') ++ def check_flags(self, flags): ++ # skip the test if these flags are not supported (ex: FreeBSD 13) ++ filename = support.TESTFN ++ try: ++ open(filename, "w").close() ++ try: ++ os.chflags(filename, flags) ++ except OSError as exc: ++ # "OSError: [Errno 45] Operation not supported" ++ self.skipTest(f"chflags() doesn't support flags " ++ f"{flags:#b}: {exc}") ++ else: ++ os.chflags(filename, 0) ++ finally: ++ support.unlink(filename) ++ ++ @unittest.skipUnless(hasattr(os, 'chflags'), 'requires os.chflags') + def test_flags(self): + flags = stat.UF_IMMUTABLE | stat.UF_NOUNLINK ++ self.check_flags(flags) ++ + d = self.do_create(recurse=3, dirs=2, files=2) + with d: + # Change files and directories flags recursively. +--- /dev/null ++++ b/Misc/NEWS.d/next/Library/2022-12-01-16-57-44.gh-issue-91133.LKMVCV.rst +@@ -0,0 +1,2 @@ ++Fix a bug in :class:`tempfile.TemporaryDirectory` cleanup, which now no longer ++dereferences symlinks when working around file system permission errors. diff -Nru python3.8-3.8.10/debian/patches/CVE-2024-0450.patch python3.8-3.8.10/debian/patches/CVE-2024-0450.patch --- python3.8-3.8.10/debian/patches/CVE-2024-0450.patch 1970-01-01 00:00:00.000000000 +0000 +++ python3.8-3.8.10/debian/patches/CVE-2024-0450.patch 2024-03-25 10:42:49.000000000 +0000 @@ -0,0 +1,133 @@ +From d05bac0b74153beb541b88b4fca33bf053990183 Mon Sep 17 00:00:00 2001 +From: Serhiy Storchaka +Date: Wed, 17 Jan 2024 15:41:50 +0200 +Subject: [PATCH] [3.8] gh-109858: Protect zipfile from "quoted-overlap" + zipbomb (GH-110016) (GH-113916) + +Raise BadZipFile when try to read an entry that overlaps with other entry or +central directory. +(cherry picked from commit 66363b9a7b9fe7c99eba3a185b74c5fdbf842eba) +--- + Lib/test/test_zipfile.py | 60 ++++++++++ + Lib/zipfile.py | 12 ++ + Misc/NEWS.d/next/Library/2023-09-28-13-15-51.gh-issue-109858.43e2dg.rst | 3 + 3 files changed, 75 insertions(+) + create mode 100644 Misc/NEWS.d/next/Library/2023-09-28-13-15-51.gh-issue-109858.43e2dg.rst + +--- a/Lib/test/test_zipfile.py ++++ b/Lib/test/test_zipfile.py +@@ -1998,6 +1998,66 @@ + with zipfile.ZipFile(zip_file) as zf: + self.assertRaises(RuntimeError, zf.extract, 'a.txt') + ++ @requires_zlib ++ def test_full_overlap(self): ++ data = ( ++ b'PK\x03\x04\x14\x00\x00\x00\x08\x00\xa0lH\x05\xe2\x1e' ++ b'8\xbb\x10\x00\x00\x00\t\x04\x00\x00\x01\x00\x00\x00a\xed' ++ b'\xc0\x81\x08\x00\x00\x00\xc00\xd6\xfbK\\d\x0b`P' ++ b'K\x01\x02\x14\x00\x14\x00\x00\x00\x08\x00\xa0lH\x05\xe2' ++ b'\x1e8\xbb\x10\x00\x00\x00\t\x04\x00\x00\x01\x00\x00\x00\x00' ++ b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00aPK' ++ b'\x01\x02\x14\x00\x14\x00\x00\x00\x08\x00\xa0lH\x05\xe2\x1e' ++ b'8\xbb\x10\x00\x00\x00\t\x04\x00\x00\x01\x00\x00\x00\x00\x00' ++ b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00bPK\x05' ++ b'\x06\x00\x00\x00\x00\x02\x00\x02\x00^\x00\x00\x00/\x00\x00' ++ b'\x00\x00\x00' ++ ) ++ with zipfile.ZipFile(io.BytesIO(data), 'r') as zipf: ++ self.assertEqual(zipf.namelist(), ['a', 'b']) ++ zi = zipf.getinfo('a') ++ self.assertEqual(zi.header_offset, 0) ++ self.assertEqual(zi.compress_size, 16) ++ self.assertEqual(zi.file_size, 1033) ++ zi = zipf.getinfo('b') ++ self.assertEqual(zi.header_offset, 0) ++ self.assertEqual(zi.compress_size, 16) ++ self.assertEqual(zi.file_size, 1033) ++ self.assertEqual(len(zipf.read('a')), 1033) ++ with self.assertRaisesRegex(zipfile.BadZipFile, 'File name.*differ'): ++ zipf.read('b') ++ ++ @requires_zlib ++ def test_quoted_overlap(self): ++ data = ( ++ b'PK\x03\x04\x14\x00\x00\x00\x08\x00\xa0lH\x05Y\xfc' ++ b'8\x044\x00\x00\x00(\x04\x00\x00\x01\x00\x00\x00a\x00' ++ b'\x1f\x00\xe0\xffPK\x03\x04\x14\x00\x00\x00\x08\x00\xa0l' ++ b'H\x05\xe2\x1e8\xbb\x10\x00\x00\x00\t\x04\x00\x00\x01\x00' ++ b'\x00\x00b\xed\xc0\x81\x08\x00\x00\x00\xc00\xd6\xfbK\\' ++ b'd\x0b`PK\x01\x02\x14\x00\x14\x00\x00\x00\x08\x00\xa0' ++ b'lH\x05Y\xfc8\x044\x00\x00\x00(\x04\x00\x00\x01' ++ b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00' ++ b'\x00aPK\x01\x02\x14\x00\x14\x00\x00\x00\x08\x00\xa0l' ++ b'H\x05\xe2\x1e8\xbb\x10\x00\x00\x00\t\x04\x00\x00\x01\x00' ++ b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00$\x00\x00\x00' ++ b'bPK\x05\x06\x00\x00\x00\x00\x02\x00\x02\x00^\x00\x00' ++ b'\x00S\x00\x00\x00\x00\x00' ++ ) ++ with zipfile.ZipFile(io.BytesIO(data), 'r') as zipf: ++ self.assertEqual(zipf.namelist(), ['a', 'b']) ++ zi = zipf.getinfo('a') ++ self.assertEqual(zi.header_offset, 0) ++ self.assertEqual(zi.compress_size, 52) ++ self.assertEqual(zi.file_size, 1064) ++ zi = zipf.getinfo('b') ++ self.assertEqual(zi.header_offset, 36) ++ self.assertEqual(zi.compress_size, 16) ++ self.assertEqual(zi.file_size, 1033) ++ with self.assertRaisesRegex(zipfile.BadZipFile, 'Overlapped entries'): ++ zipf.read('a') ++ self.assertEqual(len(zipf.read('b')), 1033) ++ + def tearDown(self): + unlink(TESTFN) + unlink(TESTFN2) +--- a/Lib/zipfile.py ++++ b/Lib/zipfile.py +@@ -339,6 +339,7 @@ + 'compress_size', + 'file_size', + '_raw_time', ++ '_end_offset', + ) + + def __init__(self, filename="NoName", date_time=(1980,1,1,0,0,0)): +@@ -378,6 +379,7 @@ + self.volume = 0 # Volume number of file header + self.internal_attr = 0 # Internal attributes + self.external_attr = 0 # External file attributes ++ self._end_offset = None # Start of the next local header or central directory + # Other attributes are set by class ZipFile: + # header_offset Byte offset to the file header + # CRC CRC-32 of the uncompressed file +@@ -1402,6 +1404,12 @@ + if self.debug > 2: + print("total", total) + ++ end_offset = self.start_dir ++ for zinfo in sorted(self.filelist, ++ key=lambda zinfo: zinfo.header_offset, ++ reverse=True): ++ zinfo._end_offset = end_offset ++ end_offset = zinfo.header_offset + + def namelist(self): + """Return a list of file names in the archive.""" +@@ -1557,6 +1565,10 @@ + 'File name in directory %r and header %r differ.' + % (zinfo.orig_filename, fname)) + ++ if (zinfo._end_offset is not None and ++ zef_file.tell() + zinfo.compress_size > zinfo._end_offset): ++ raise BadZipFile(f"Overlapped entries: {zinfo.orig_filename!r} (possible zip bomb)") ++ + # check for encrypted flag & handle password + is_encrypted = zinfo.flag_bits & 0x1 + if is_encrypted: +--- /dev/null ++++ b/Misc/NEWS.d/next/Library/2023-09-28-13-15-51.gh-issue-109858.43e2dg.rst +@@ -0,0 +1,3 @@ ++Protect :mod:`zipfile` from "quoted-overlap" zipbomb. It now raises ++BadZipFile when try to read an entry that overlaps with other entry or ++central directory. diff -Nru python3.8-3.8.10/debian/patches/series python3.8-3.8.10/debian/patches/series --- python3.8-3.8.10/debian/patches/series 2023-11-22 10:16:44.000000000 +0000 +++ python3.8-3.8.10/debian/patches/series 2024-03-25 10:42:49.000000000 +0000 @@ -47,3 +47,5 @@ CVE-2023-24329.patch CVE-2023-24329-2.patch CVE-2023-40217.patch +CVE-2023-6597.patch +CVE-2024-0450.patch