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Enable importing of hash-based .pyc files under FIPS mode

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Resolves: RHEL-40779
This commit is contained in:
Charalampos Stratakis 2024-06-11 22:57:04 +02:00
parent 09ee9ad5fb
commit 147c7cb8c0
2 changed files with 49 additions and 292 deletions
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333
00329-fips.patch
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@ -1,4 +1,4 @@
From 929f90dc647114675317ed1ab65511003d9daebc Mon Sep 17 00:00:00 2001 From 4345f8ea8a56a58ef8a48439c0e201702d1012a2 Mon Sep 17 00:00:00 2001
From: Charalampos Stratakis <cstratak@redhat.com> From: Charalampos Stratakis <cstratak@redhat.com>
Date: Thu, 12 Dec 2019 16:58:31 +0100 Date: Thu, 12 Dec 2019 16:58:31 +0100
Subject: [PATCH 1/7] Expose blake2b and blake2s hashes from OpenSSL Subject: [PATCH 1/7] Expose blake2b and blake2s hashes from OpenSSL
@ -205,10 +205,10 @@ index 5d84f4a..011026a 100644
-/*[clinic end generated code: output=69f2374071bff707 input=a9049054013a1b77]*/ -/*[clinic end generated code: output=69f2374071bff707 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=c6a9af5563972eda input=a9049054013a1b77]*/ +/*[clinic end generated code: output=c6a9af5563972eda input=a9049054013a1b77]*/
-- --
2.44.0 2.45.0
From a0a19a8057c0b674000e921766e39684f92f4cd8 Mon Sep 17 00:00:00 2001 From 1f79be1a11ad6811913c239da980c5bab0f1c538 Mon Sep 17 00:00:00 2001
From: Petr Viktorin <pviktori@redhat.com> From: Petr Viktorin <pviktori@redhat.com>
Date: Thu, 1 Aug 2019 17:57:05 +0200 Date: Thu, 1 Aug 2019 17:57:05 +0200
Subject: [PATCH 2/7] Use a stronger hash in multiprocessing handshake Subject: [PATCH 2/7] Use a stronger hash in multiprocessing handshake
@ -253,10 +253,10 @@ index 59c61d2..7fc594e 100644
response = connection.recv_bytes(256) # reject large message response = connection.recv_bytes(256) # reject large message
if response != WELCOME: if response != WELCOME:
-- --
2.44.0 2.45.0
From a6ec352e5f2c38ccbd4ca3beffbd39e8a350319e Mon Sep 17 00:00:00 2001 From e069ed2dcd0edf0de489eb387267fb35a92ed506 Mon Sep 17 00:00:00 2001
From: Petr Viktorin <pviktori@redhat.com> From: Petr Viktorin <pviktori@redhat.com>
Date: Thu, 25 Jul 2019 17:19:06 +0200 Date: Thu, 25 Jul 2019 17:19:06 +0200
Subject: [PATCH 3/7] Disable Python's hash implementations in FIPS mode, Subject: [PATCH 3/7] Disable Python's hash implementations in FIPS mode,
@ -460,10 +460,10 @@ index 7b4000f..8e2f0ad 100644
PY_STDLIB_MOD([_crypt], PY_STDLIB_MOD([_crypt],
[], [test "$ac_cv_crypt_crypt" = yes], [], [test "$ac_cv_crypt_crypt" = yes],
-- --
2.44.0 2.45.0
From 3a52b3f1ee7735913584ced6440b4241c9d8104d Mon Sep 17 00:00:00 2001 From 2e0c5086f4a52803595e19795111278c3c80ee2f Mon Sep 17 00:00:00 2001
From: Charalampos Stratakis <cstratak@redhat.com> From: Charalampos Stratakis <cstratak@redhat.com>
Date: Fri, 29 Jan 2021 14:16:21 +0100 Date: Fri, 29 Jan 2021 14:16:21 +0100
Subject: [PATCH 4/7] Use python's fall back crypto implementations only if we Subject: [PATCH 4/7] Use python's fall back crypto implementations only if we
@ -623,10 +623,10 @@ index 01d12f5..a7cdb07 100644
def test_pbkdf2_hmac_py(self): def test_pbkdf2_hmac_py(self):
with warnings_helper.check_warnings(): with warnings_helper.check_warnings():
-- --
2.44.0 2.45.0
From f64047f079725f4a4985edc5532a8a24035040ad Mon Sep 17 00:00:00 2001 From 0e1d2a67ef66cccc9afa4a515dc34ce587946f22 Mon Sep 17 00:00:00 2001
From: Charalampos Stratakis <cstratak@redhat.com> From: Charalampos Stratakis <cstratak@redhat.com>
Date: Wed, 31 Jul 2019 15:43:43 +0200 Date: Wed, 31 Jul 2019 15:43:43 +0200
Subject: [PATCH 5/7] Test equivalence of hashes for the various digests with Subject: [PATCH 5/7] Test equivalence of hashes for the various digests with
@ -783,10 +783,10 @@ index a7cdb07..c071f28 100644
class KDFTests(unittest.TestCase): class KDFTests(unittest.TestCase):
-- --
2.44.0 2.45.0
From d769d1de3fc7fdb9e5f8164108f130301639889a Mon Sep 17 00:00:00 2001 From f1c9ecbb2e2f08d792fb0557058824eed23abb7b Mon Sep 17 00:00:00 2001
From: Petr Viktorin <pviktori@redhat.com> From: Petr Viktorin <pviktori@redhat.com>
Date: Mon, 26 Aug 2019 19:39:48 +0200 Date: Mon, 26 Aug 2019 19:39:48 +0200
Subject: [PATCH 6/7] Guard against Python HMAC in FIPS mode Subject: [PATCH 6/7] Guard against Python HMAC in FIPS mode
@ -893,290 +893,43 @@ index 1502fba..e40ca4b 100644
def test_realcopy_old(self): def test_realcopy_old(self):
# Testing if the copy method created a real copy. # Testing if the copy method created a real copy.
-- --
2.44.0 2.45.0
From 142e0b03f8cbfbfbeb58c54e45fc51f1ff4a903e Mon Sep 17 00:00:00 2001 From a0c3f9ac5a4e60ab22418a3196ae46ba34e9477b Mon Sep 17 00:00:00 2001
From: Petr Viktorin <encukou@gmail.com> From: Nikita Sobolev <mail@sobolevn.me>
Date: Wed, 25 Aug 2021 16:44:43 +0200 Date: Thu, 24 Nov 2022 01:47:31 +0300
Subject: [PATCH 7/7] Disable hash-based PYCs in FIPS mode Subject: [PATCH 7/7] closes gh-99508: fix `TypeError` in
`Lib/importlib/_bootstrap_external.py` (GH-99635)
If FIPS mode is on, we can't use siphash-based HMAC
(_Py_KeyedHash), so:
- Unchecked hash PYCs can be imported, but not created
- Checked hash PYCs can not be imported nor created
- The default mode is timestamp-based PYCs, even if
SOURCE_DATE_EPOCH is set.
If FIPS mode is off, there are no changes in behavior.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1835169
--- ---
Lib/py_compile.py | 2 ++ Lib/importlib/_bootstrap_external.py | 3 ++-
Lib/test/support/__init__.py | 14 +++++++++++++ .../next/Library/2022-11-21-10-45-54.gh-issue-99508.QqVbby.rst | 2 ++
Lib/test/test_cmd_line_script.py | 2 ++ 2 files changed, 4 insertions(+), 1 deletion(-)
Lib/test/test_compileall.py | 11 +++++++++- create mode 100644 Misc/NEWS.d/next/Library/2022-11-21-10-45-54.gh-issue-99508.QqVbby.rst
Lib/test/test_imp.py | 2 ++
.../test_importlib/source/test_file_loader.py | 6 ++++++
Lib/test/test_py_compile.py | 11 ++++++++--
Lib/test/test_zipimport.py | 2 ++
Python/import.c | 20 +++++++++++++++++++
9 files changed, 67 insertions(+), 3 deletions(-)
diff --git a/Lib/py_compile.py b/Lib/py_compile.py diff --git a/Lib/importlib/_bootstrap_external.py b/Lib/importlib/_bootstrap_external.py
index db52725..5fca65e 100644 index e53f6ac..bdc491e 100644
--- a/Lib/py_compile.py --- a/Lib/importlib/_bootstrap_external.py
+++ b/Lib/py_compile.py +++ b/Lib/importlib/_bootstrap_external.py
@@ -70,7 +70,9 @@ class PycInvalidationMode(enum.Enum): @@ -1077,7 +1077,8 @@ class SourceLoader(_LoaderBasics):
source_mtime is not None):
if hash_based:
def _get_default_invalidation_mode(): if source_hash is None:
+ import _hashlib - source_hash = _imp.source_hash(source_bytes)
if (os.environ.get('SOURCE_DATE_EPOCH') and not + source_hash = _imp.source_hash(_RAW_MAGIC_NUMBER,
+ _hashlib.get_fips_mode() and not + source_bytes)
os.environ.get('RPM_BUILD_ROOT')): data = _code_to_hash_pyc(code_object, source_hash, check_source)
return PycInvalidationMode.CHECKED_HASH
else: else:
diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py data = _code_to_timestamp_pyc(code_object, source_mtime,
index 059542c..152bb91 100644 diff --git a/Misc/NEWS.d/next/Library/2022-11-21-10-45-54.gh-issue-99508.QqVbby.rst b/Misc/NEWS.d/next/Library/2022-11-21-10-45-54.gh-issue-99508.QqVbby.rst
--- a/Lib/test/support/__init__.py new file mode 100644
+++ b/Lib/test/support/__init__.py index 0000000..82720d1
@@ -2204,6 +2204,20 @@ def sleeping_retry(timeout, err_msg=None, /, --- /dev/null
delay = min(delay * 2, max_delay) +++ b/Misc/NEWS.d/next/Library/2022-11-21-10-45-54.gh-issue-99508.QqVbby.rst
@@ -0,0 +1,2 @@
+Fix ``TypeError`` in ``Lib/importlib/_bootstrap_external.py`` while calling
+def fails_in_fips_mode(expected_error): +``_imp.source_hash()``.
+ import _hashlib
+ if _hashlib.get_fips_mode():
+ def _decorator(func):
+ def _wrapper(self, *args, **kwargs):
+ with self.assertRaises(expected_error):
+ func(self, *args, **kwargs)
+ return _wrapper
+ else:
+ def _decorator(func):
+ return func
+ return _decorator
+
+
@contextlib.contextmanager
def adjust_int_max_str_digits(max_digits):
"""Temporarily change the integer string conversion length limit."""
diff --git a/Lib/test/test_cmd_line_script.py b/Lib/test/test_cmd_line_script.py
index 7fcd563..476b557 100644
--- a/Lib/test/test_cmd_line_script.py
+++ b/Lib/test/test_cmd_line_script.py
@@ -286,6 +286,7 @@ class CmdLineTest(unittest.TestCase):
self._check_script(zip_name, run_name, zip_name, zip_name, '',
zipimport.zipimporter)
+ @support.fails_in_fips_mode(ImportError)
def test_zipfile_compiled_checked_hash(self):
with os_helper.temp_dir() as script_dir:
script_name = _make_test_script(script_dir, '__main__')
@@ -296,6 +297,7 @@ class CmdLineTest(unittest.TestCase):
self._check_script(zip_name, run_name, zip_name, zip_name, '',
zipimport.zipimporter)
+ @support.fails_in_fips_mode(ImportError)
def test_zipfile_compiled_unchecked_hash(self):
with os_helper.temp_dir() as script_dir:
script_name = _make_test_script(script_dir, '__main__')
diff --git a/Lib/test/test_compileall.py b/Lib/test/test_compileall.py
index 9cd92ad..4ec29a1 100644
--- a/Lib/test/test_compileall.py
+++ b/Lib/test/test_compileall.py
@@ -806,14 +806,23 @@ class CommandLineTestsBase:
out = self.assertRunOK('badfilename')
self.assertRegex(out, b"Can't list 'badfilename'")
- def test_pyc_invalidation_mode(self):
+ @support.fails_in_fips_mode(AssertionError)
+ def test_pyc_invalidation_mode_checked(self):
script_helper.make_script(self.pkgdir, 'f1', '')
pyc = importlib.util.cache_from_source(
os.path.join(self.pkgdir, 'f1.py'))
+
self.assertRunOK('--invalidation-mode=checked-hash', self.pkgdir)
with open(pyc, 'rb') as fp:
data = fp.read()
self.assertEqual(int.from_bytes(data[4:8], 'little'), 0b11)
+
+ @support.fails_in_fips_mode(AssertionError)
+ def test_pyc_invalidation_mode_unchecked(self):
+ script_helper.make_script(self.pkgdir, 'f1', '')
+ pyc = importlib.util.cache_from_source(
+ os.path.join(self.pkgdir, 'f1.py'))
+
self.assertRunOK('--invalidation-mode=unchecked-hash', self.pkgdir)
with open(pyc, 'rb') as fp:
data = fp.read()
diff --git a/Lib/test/test_imp.py b/Lib/test/test_imp.py
index aa67cc3..594a1b5 100644
--- a/Lib/test/test_imp.py
+++ b/Lib/test/test_imp.py
@@ -355,6 +355,7 @@ class ImportTests(unittest.TestCase):
import _frozen_importlib
self.assertEqual(_frozen_importlib.__spec__.origin, "frozen")
+ @support.fails_in_fips_mode(ImportError)
def test_source_hash(self):
self.assertEqual(_imp.source_hash(42, b'hi'), b'\xfb\xd9G\x05\xaf$\x9b~')
self.assertEqual(_imp.source_hash(43, b'hi'), b'\xd0/\x87C\xccC\xff\xe2')
@@ -374,6 +375,7 @@ class ImportTests(unittest.TestCase):
res = script_helper.assert_python_ok(*args)
self.assertEqual(res.out.strip().decode('utf-8'), expected)
+ @support.fails_in_fips_mode(ImportError)
def test_find_and_load_checked_pyc(self):
# issue 34056
with os_helper.temp_cwd():
diff --git a/Lib/test/test_importlib/source/test_file_loader.py b/Lib/test/test_importlib/source/test_file_loader.py
index 378dcbe..7b223a1 100644
--- a/Lib/test/test_importlib/source/test_file_loader.py
+++ b/Lib/test/test_importlib/source/test_file_loader.py
@@ -16,6 +16,7 @@ import types
import unittest
import warnings
+from test import support
from test.support.import_helper import make_legacy_pyc, unload
from test.test_py_compile import without_source_date_epoch
@@ -238,6 +239,7 @@ class SimpleTest(abc.LoaderTests):
loader.load_module('bad name')
@util.writes_bytecode_files
+ @support.fails_in_fips_mode(ImportError)
def test_checked_hash_based_pyc(self):
with util.create_modules('_temp') as mapping:
source = mapping['_temp']
@@ -269,6 +271,7 @@ class SimpleTest(abc.LoaderTests):
)
@util.writes_bytecode_files
+ @support.fails_in_fips_mode(ImportError)
def test_overridden_checked_hash_based_pyc(self):
with util.create_modules('_temp') as mapping, \
unittest.mock.patch('_imp.check_hash_based_pycs', 'never'):
@@ -294,6 +297,7 @@ class SimpleTest(abc.LoaderTests):
self.assertEqual(mod.state, 'old')
@util.writes_bytecode_files
+ @support.fails_in_fips_mode(ImportError)
def test_unchecked_hash_based_pyc(self):
with util.create_modules('_temp') as mapping:
source = mapping['_temp']
@@ -324,6 +328,7 @@ class SimpleTest(abc.LoaderTests):
)
@util.writes_bytecode_files
+ @support.fails_in_fips_mode(ImportError)
def test_overridden_unchecked_hash_based_pyc(self):
with util.create_modules('_temp') as mapping, \
unittest.mock.patch('_imp.check_hash_based_pycs', 'always'):
@@ -433,6 +438,7 @@ class BadBytecodeTest:
del_source=del_source)
test('_temp', mapping, bc_path)
+ @support.fails_in_fips_mode(ImportError)
def _test_partial_hash(self, test, *, del_source=False):
with util.create_modules('_temp') as mapping:
bc_path = self.manipulate_bytecode(
diff --git a/Lib/test/test_py_compile.py b/Lib/test/test_py_compile.py
index 7f24abe..229ffb9 100644
--- a/Lib/test/test_py_compile.py
+++ b/Lib/test/test_py_compile.py
@@ -143,13 +143,16 @@ class PyCompileTestsBase:
importlib.util.cache_from_source(bad_coding)))
def test_source_date_epoch(self):
+ import _hashlib
py_compile.compile(self.source_path, self.pyc_path)
self.assertTrue(os.path.exists(self.pyc_path))
self.assertFalse(os.path.exists(self.cache_path))
with open(self.pyc_path, 'rb') as fp:
flags = importlib._bootstrap_external._classify_pyc(
fp.read(), 'test', {})
- if os.environ.get('SOURCE_DATE_EPOCH'):
+ if _hashlib.get_fips_mode():
+ expected_flags = 0b00
+ elif os.environ.get('SOURCE_DATE_EPOCH'):
expected_flags = 0b11
else:
expected_flags = 0b00
@@ -180,7 +183,8 @@ class PyCompileTestsBase:
# Specifying optimized bytecode should lead to a path reflecting that.
self.assertIn('opt-2', py_compile.compile(self.source_path, optimize=2))
- def test_invalidation_mode(self):
+ @support.fails_in_fips_mode(ImportError)
+ def test_invalidation_mode_checked(self):
py_compile.compile(
self.source_path,
invalidation_mode=py_compile.PycInvalidationMode.CHECKED_HASH,
@@ -189,6 +193,9 @@ class PyCompileTestsBase:
flags = importlib._bootstrap_external._classify_pyc(
fp.read(), 'test', {})
self.assertEqual(flags, 0b11)
+
+ @support.fails_in_fips_mode(ImportError)
+ def test_invalidation_mode_unchecked(self):
py_compile.compile(
self.source_path,
invalidation_mode=py_compile.PycInvalidationMode.UNCHECKED_HASH,
diff --git a/Lib/test/test_zipimport.py b/Lib/test/test_zipimport.py
index 59a5200..81fadb3 100644
--- a/Lib/test/test_zipimport.py
+++ b/Lib/test/test_zipimport.py
@@ -190,6 +190,7 @@ class UncompressedZipImportTestCase(ImportHooksBaseTestCase):
TESTMOD + pyc_ext: (NOW, test_pyc)}
self.doTest(pyc_ext, files, TESTMOD)
+ @support.fails_in_fips_mode(ImportError)
def testUncheckedHashBasedPyc(self):
source = b"state = 'old'"
source_hash = importlib.util.source_hash(source)
@@ -204,6 +205,7 @@ class UncompressedZipImportTestCase(ImportHooksBaseTestCase):
self.assertEqual(mod.state, 'old')
self.doTest(None, files, TESTMOD, call=check)
+ @support.fails_in_fips_mode(ImportError)
@unittest.mock.patch('_imp.check_hash_based_pycs', 'always')
def test_checked_hash_based_change_pyc(self):
source = b"state = 'old'"
diff --git a/Python/import.c b/Python/import.c
index c4e2145..e19e42e 100644
--- a/Python/import.c
+++ b/Python/import.c
@@ -2449,6 +2449,26 @@ static PyObject *
_imp_source_hash_impl(PyObject *module, long key, Py_buffer *source)
/*[clinic end generated code: output=edb292448cf399ea input=9aaad1e590089789]*/
{
+ PyObject *_hashlib = PyImport_ImportModule("_hashlib");
+ if (_hashlib == NULL) {
+ return NULL;
+ }
+ PyObject *fips_mode_obj = PyObject_CallMethod(_hashlib, "get_fips_mode", NULL);
+ Py_DECREF(_hashlib);
+ if (fips_mode_obj == NULL) {
+ return NULL;
+ }
+ int fips_mode = PyObject_IsTrue(fips_mode_obj);
+ Py_DECREF(fips_mode_obj);
+ if (fips_mode < 0) {
+ return NULL;
+ }
+ if (fips_mode) {
+ PyErr_SetString(
+ PyExc_ImportError,
+ "hash-based PYC validation (siphash24) not available in FIPS mode");
+ return NULL;
+ };
union {
uint64_t x;
char data[sizeof(uint64_t)];
-- --
2.44.0 2.45.0

6
python3.11.spec
View File

@ -20,7 +20,7 @@ URL: https://www.python.org/
#global prerel ... #global prerel ...
%global upstream_version %{general_version}%{?prerel} %global upstream_version %{general_version}%{?prerel}
Version: %{general_version}%{?prerel:~%{prerel}} Version: %{general_version}%{?prerel:~%{prerel}}
Release: 1%{?dist} Release: 2%{?dist}
License: Python License: Python
@ -1637,6 +1637,10 @@ CheckPython optimized
# ====================================================== # ======================================================
%changelog %changelog
* Tue Jun 11 2024 Charalampos Stratakis <cstratak@redhat.com> - 3.11.9-2
- Enable importing of hash-based .pyc files under FIPS mode
Resolves: RHEL-40779
* Mon Apr 22 2024 Charalampos Stratakis <cstratak@redhat.com> - 3.11.9-1 * Mon Apr 22 2024 Charalampos Stratakis <cstratak@redhat.com> - 3.11.9-1
- Rebase to 3.11.9 - Rebase to 3.11.9
- Security fixes for CVE-2023-6597 and CVE-2024-0450 - Security fixes for CVE-2023-6597 and CVE-2024-0450