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Author SHA1 Message Date
eabdullin 2d9c1663a4 import CS python3.9-3.9.18-3.el9 2024-03-28 11:34:12 +00:00
eabdullin 818af0d5cf import CS python3.9-3.9.17-2.el9 2023-09-21 20:03:51 +00:00
9 changed files with 1167 additions and 22 deletions

2
.gitignore vendored
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@ -1 +1 @@
SOURCES/Python-3.9.16.tar.xz
SOURCES/Python-3.9.18.tar.xz

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@ -1 +1 @@
19acd6a341e4f2d7ff97c10c2eada258e9898624 SOURCES/Python-3.9.16.tar.xz
abe4a20dcc11798495b17611ef9f8f33d6975722 SOURCES/Python-3.9.18.tar.xz

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@ -31,7 +31,7 @@ index e510cc7..5bd16a6 100644
__all__ = ["version", "bootstrap"]
-_SETUPTOOLS_VERSION = "58.1.0"
-_PIP_VERSION = "22.0.4"
-_PIP_VERSION = "23.0.1"
+
+_WHEEL_DIR = "/usr/share/python-wheels/"
+

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@ -0,0 +1,251 @@
From 8b70605b594b3831331a9340ba764ff751871612 Mon Sep 17 00:00:00 2001
From: Petr Viktorin <encukou@gmail.com>
Date: Mon, 6 Mar 2023 17:24:24 +0100
Subject: [PATCH 2/2] CVE-2007-4559, PEP-706: Add filters for tarfile
extraction (downstream)
Add and test RHEL-specific ways of configuring the default behavior: environment
variable and config file.
---
Lib/tarfile.py | 42 +++++++++++++
Lib/test/test_shutil.py | 3 +-
Lib/test/test_tarfile.py | 128 ++++++++++++++++++++++++++++++++++++++-
3 files changed, 169 insertions(+), 4 deletions(-)
diff --git a/Lib/tarfile.py b/Lib/tarfile.py
index b6ad7dbe2a4..dc7050b2c63 100755
--- a/Lib/tarfile.py
+++ b/Lib/tarfile.py
@@ -72,6 +72,13 @@ __all__ = ["TarFile", "TarInfo", "is_tarfile", "TarError", "ReadError",
"ENCODING", "USTAR_FORMAT", "GNU_FORMAT", "PAX_FORMAT",
"DEFAULT_FORMAT", "open"]
+# If true, use the safer (but backwards-incompatible) 'tar' extraction filter,
+# rather than 'fully_trusted', by default.
+# The emitted warning is changed to match.
+_RH_SAFER_DEFAULT = True
+
+# System-wide configuration file
+_CONFIG_FILENAME = '/etc/python/tarfile.cfg'
#---------------------------------------------------------
# tar constants
@@ -2197,6 +2204,41 @@ class TarFile(object):
if filter is None:
filter = self.extraction_filter
if filter is None:
+ name = os.environ.get('PYTHON_TARFILE_EXTRACTION_FILTER')
+ if name is None:
+ try:
+ file = bltn_open(_CONFIG_FILENAME)
+ except FileNotFoundError:
+ pass
+ else:
+ import configparser
+ conf = configparser.ConfigParser(
+ interpolation=None,
+ comment_prefixes=('#', ),
+ )
+ with file:
+ conf.read_file(file)
+ name = conf.get('tarfile',
+ 'PYTHON_TARFILE_EXTRACTION_FILTER',
+ fallback='')
+ if name:
+ try:
+ filter = _NAMED_FILTERS[name]
+ except KeyError:
+ raise ValueError(f"filter {filter!r} not found") from None
+ self.extraction_filter = filter
+ return filter
+ if _RH_SAFER_DEFAULT:
+ warnings.warn(
+ 'The default behavior of tarfile extraction has been '
+ + 'changed to disallow common exploits '
+ + '(including CVE-2007-4559). '
+ + 'By default, absolute/parent paths are disallowed '
+ + 'and some mode bits are cleared. '
+ + 'See https://access.redhat.com/articles/7004769 '
+ + 'for more details.',
+ RuntimeWarning)
+ return tar_filter
return fully_trusted_filter
if isinstance(filter, str):
raise TypeError(
diff --git a/Lib/test/test_shutil.py b/Lib/test/test_shutil.py
index 9041e7aa368..1eb1116cc10 100644
--- a/Lib/test/test_shutil.py
+++ b/Lib/test/test_shutil.py
@@ -1613,7 +1613,8 @@ class TestArchives(BaseTest, unittest.TestCase):
def check_unpack_tarball(self, format):
self.check_unpack_archive(format, filter='fully_trusted')
self.check_unpack_archive(format, filter='data')
- with warnings_helper.check_no_warnings(self):
+ with warnings_helper.check_warnings(
+ ('.*CVE-2007-4559', RuntimeWarning)):
self.check_unpack_archive(format)
def test_unpack_archive_tar(self):
diff --git a/Lib/test/test_tarfile.py b/Lib/test/test_tarfile.py
index a66f7efd2d6..6fd3c384b5c 100644
--- a/Lib/test/test_tarfile.py
+++ b/Lib/test/test_tarfile.py
@@ -2,7 +2,7 @@ import sys
import os
import io
from hashlib import sha256
-from contextlib import contextmanager
+from contextlib import contextmanager, ExitStack
from random import Random
import pathlib
import shutil
@@ -2929,7 +2929,11 @@ class NoneInfoExtractTests(ReadTest):
tar = tarfile.open(tarname, mode='r', encoding="iso8859-1")
cls.control_dir = pathlib.Path(TEMPDIR) / "extractall_ctrl"
tar.errorlevel = 0
- tar.extractall(cls.control_dir, filter=cls.extraction_filter)
+ with ExitStack() as cm:
+ if cls.extraction_filter is None:
+ cm.enter_context(warnings.catch_warnings())
+ warnings.simplefilter(action="ignore", category=RuntimeWarning)
+ tar.extractall(cls.control_dir, filter=cls.extraction_filter)
tar.close()
cls.control_paths = set(
p.relative_to(cls.control_dir)
@@ -3592,7 +3596,8 @@ class TestExtractionFilters(unittest.TestCase):
"""Ensure the default filter does not warn (like in 3.12)"""
with ArchiveMaker() as arc:
arc.add('foo')
- with warnings_helper.check_no_warnings(self):
+ with warnings_helper.check_warnings(
+ ('.*CVE-2007-4559', RuntimeWarning)):
with self.check_context(arc.open(), None):
self.expect_file('foo')
@@ -3762,6 +3767,123 @@ class TestExtractionFilters(unittest.TestCase):
self.expect_exception(TypeError) # errorlevel is not int
+ @contextmanager
+ def rh_config_context(self, config_lines=None):
+ """Set up for testing various ways of overriding the default filter
+
+ return a triple with:
+ - temporary directory
+ - EnvironmentVarGuard()
+ - a test archive for use with check_* methods below
+
+ If config_lines is given, write them to the config file. Otherwise
+ the config file is missing.
+ """
+ tempdir = pathlib.Path(TEMPDIR) / 'tmp'
+ configfile = tempdir / 'tarfile.cfg'
+ with ArchiveMaker() as arc:
+ arc.add('good')
+ arc.add('ugly', symlink_to='/etc/passwd')
+ arc.add('../bad')
+ with (
+ support.temp_dir(tempdir),
+ support.swap_attr(tarfile, '_CONFIG_FILENAME', str(configfile)),
+ support.EnvironmentVarGuard() as env,
+ arc.open() as tar,
+ ):
+ if config_lines is not None:
+ with configfile.open('w') as f:
+ for line in config_lines:
+ print(line, file=f)
+ yield tempdir, env, tar
+
+ def check_rh_default_behavior(self, tar, tempdir):
+ """Check RH default: warn and refuse to extract dangerous files."""
+ with (
+ warnings_helper.check_warnings(
+ ('.*CVE-2007-4559', RuntimeWarning)),
+ self.assertRaises(tarfile.OutsideDestinationError),
+ ):
+ tar.extractall(tempdir / 'outdir')
+
+ def check_trusted_default(self, tar, tempdir):
+ """Check 'fully_trusted' is configured as the default filter."""
+ with (
+ warnings_helper.check_no_warnings(self),
+ ):
+ tar.extractall(tempdir / 'outdir')
+ self.assertTrue((tempdir / 'outdir/good').exists())
+ self.assertEqual((tempdir / 'outdir/ugly').readlink(),
+ pathlib.Path('/etc/passwd'))
+ self.assertTrue((tempdir / 'bad').exists())
+
+ def test_rh_default_no_conf(self):
+ with self.rh_config_context() as (tempdir, env, tar):
+ self.check_rh_default_behavior(tar, tempdir)
+
+ def test_rh_default_from_file(self):
+ lines = ['[tarfile]', 'PYTHON_TARFILE_EXTRACTION_FILTER=fully_trusted']
+ with self.rh_config_context(lines) as (tempdir, env, tar):
+ self.check_trusted_default(tar, tempdir)
+
+ def test_rh_empty_config_file(self):
+ """Empty config file -> default behavior"""
+ lines = []
+ with self.rh_config_context(lines) as (tempdir, env, tar):
+ self.check_rh_default_behavior(tar, tempdir)
+
+ def test_empty_config_section(self):
+ """Empty section in config file -> default behavior"""
+ lines = ['[tarfile]']
+ with self.rh_config_context(lines) as (tempdir, env, tar):
+ self.check_rh_default_behavior(tar, tempdir)
+
+ def test_rh_default_empty_config_option(self):
+ """Empty option value in config file -> default behavior"""
+ lines = ['[tarfile]', 'PYTHON_TARFILE_EXTRACTION_FILTER=']
+ with self.rh_config_context(lines) as (tempdir, env, tar):
+ self.check_rh_default_behavior(tar, tempdir)
+
+ def test_bad_config_option(self):
+ """Bad option value in config file -> ValueError"""
+ lines = ['[tarfile]', 'PYTHON_TARFILE_EXTRACTION_FILTER=unknown!']
+ with self.rh_config_context(lines) as (tempdir, env, tar):
+ with self.assertRaises(ValueError):
+ tar.extractall(tempdir / 'outdir')
+
+ def test_default_from_envvar(self):
+ with self.rh_config_context() as (tempdir, env, tar):
+ env['PYTHON_TARFILE_EXTRACTION_FILTER'] = 'fully_trusted'
+ self.check_trusted_default(tar, tempdir)
+
+ def test_empty_envvar(self):
+ """Empty env variable -> default behavior"""
+ with self.rh_config_context() as (tempdir, env, tar):
+ env['PYTHON_TARFILE_EXTRACTION_FILTER'] = ''
+ self.check_rh_default_behavior(tar, tempdir)
+
+ def test_bad_envvar(self):
+ with self.rh_config_context() as (tempdir, env, tar):
+ env['PYTHON_TARFILE_EXTRACTION_FILTER'] = 'unknown!'
+ with self.assertRaises(ValueError):
+ tar.extractall(tempdir / 'outdir')
+
+ def test_envvar_overrides_file(self):
+ lines = ['[tarfile]', 'PYTHON_TARFILE_EXTRACTION_FILTER=data']
+ with self.rh_config_context(lines) as (tempdir, env, tar):
+ env['PYTHON_TARFILE_EXTRACTION_FILTER'] = 'fully_trusted'
+ self.check_trusted_default(tar, tempdir)
+
+ def test_monkeypatch_overrides_envvar(self):
+ with self.rh_config_context(None) as (tempdir, env, tar):
+ env['PYTHON_TARFILE_EXTRACTION_FILTER'] = 'data'
+ with support.swap_attr(
+ tarfile.TarFile, 'extraction_filter',
+ staticmethod(tarfile.fully_trusted_filter)
+ ):
+ self.check_trusted_default(tar, tempdir)
+
+
def setUpModule():
support.unlink(TEMPDIR)
os.makedirs(TEMPDIR)
--
2.40.1

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@ -0,0 +1,88 @@
From e5be32d6eb880c9563fde2f23cc31b7e449719ec Mon Sep 17 00:00:00 2001
From: Victor Stinner <vstinner@python.org>
Date: Wed, 24 Jan 2024 18:14:14 +0100
Subject: [PATCH] bpo-46623: Skip two test_zlib tests on s390x (GH-31096)
Skip test_pair() and test_speech128() of test_zlib on s390x since
they fail if zlib uses the s390x hardware accelerator.
---
Lib/test/test_zlib.py | 32 +++++++++++++++++++
.../2022-02-03-09-45-26.bpo-46623.vxzuhV.rst | 2 ++
2 files changed, 34 insertions(+)
create mode 100644 Misc/NEWS.d/next/Tests/2022-02-03-09-45-26.bpo-46623.vxzuhV.rst
diff --git a/Lib/test/test_zlib.py b/Lib/test/test_zlib.py
index 02509cd..f3654c9 100644
--- a/Lib/test/test_zlib.py
+++ b/Lib/test/test_zlib.py
@@ -2,6 +2,7 @@ import unittest
from test import support
import binascii
import copy
+import os
import pickle
import random
import sys
@@ -16,6 +17,35 @@ requires_Decompress_copy = unittest.skipUnless(
hasattr(zlib.decompressobj(), "copy"),
'requires Decompress.copy()')
+# bpo-46623: On s390x, when a hardware accelerator is used, using different
+# ways to compress data with zlib can produce different compressed data.
+# Simplified test_pair() code:
+#
+# def func1(data):
+# return zlib.compress(data)
+#
+# def func2(data)
+# co = zlib.compressobj()
+# x1 = co.compress(data)
+# x2 = co.flush()
+# return x1 + x2
+#
+# On s390x if zlib uses a hardware accelerator, func1() creates a single
+# "final" compressed block whereas func2() produces 3 compressed blocks (the
+# last one is a final block). On other platforms with no accelerator, func1()
+# and func2() produce the same compressed data made of a single (final)
+# compressed block.
+#
+# Only the compressed data is different, the decompression returns the original
+# data:
+#
+# zlib.decompress(func1(data)) == zlib.decompress(func2(data)) == data
+#
+# Make the assumption that s390x always has an accelerator to simplify the skip
+# condition. Windows doesn't have os.uname() but it doesn't support s390x.
+skip_on_s390x = unittest.skipIf(hasattr(os, 'uname') and os.uname().machine == 's390x',
+ 'skipped on s390x')
+
class VersionTestCase(unittest.TestCase):
@@ -174,6 +204,7 @@ class CompressTestCase(BaseCompressTestCase, unittest.TestCase):
bufsize=zlib.DEF_BUF_SIZE),
HAMLET_SCENE)
+ @skip_on_s390x
def test_speech128(self):
# compress more data
data = HAMLET_SCENE * 128
@@ -225,6 +256,7 @@ class CompressTestCase(BaseCompressTestCase, unittest.TestCase):
class CompressObjectTestCase(BaseCompressTestCase, unittest.TestCase):
# Test compression object
+ @skip_on_s390x
def test_pair(self):
# straightforward compress/decompress objects
datasrc = HAMLET_SCENE * 128
diff --git a/Misc/NEWS.d/next/Tests/2022-02-03-09-45-26.bpo-46623.vxzuhV.rst b/Misc/NEWS.d/next/Tests/2022-02-03-09-45-26.bpo-46623.vxzuhV.rst
new file mode 100644
index 0000000..be085c0
--- /dev/null
+++ b/Misc/NEWS.d/next/Tests/2022-02-03-09-45-26.bpo-46623.vxzuhV.rst
@@ -0,0 +1,2 @@
+Skip test_pair() and test_speech128() of test_zlib on s390x since they fail
+if zlib uses the s390x hardware accelerator. Patch by Victor Stinner.
--
2.43.0

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@ -0,0 +1,750 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Victor Stinner <vstinner@python.org>
Date: Fri, 15 Dec 2023 16:10:40 +0100
Subject: [PATCH] 00415: [CVE-2023-27043] gh-102988: Reject malformed addresses
in email.parseaddr() (#111116)
Detect email address parsing errors and return empty tuple to
indicate the parsing error (old API). Add an optional 'strict'
parameter to getaddresses() and parseaddr() functions. Patch by
Thomas Dwyer.
Co-Authored-By: Thomas Dwyer <github@tomd.tel>
---
Doc/library/email.utils.rst | 19 +-
Lib/email/utils.py | 151 ++++++++++++-
Lib/test/test_email/test_email.py | 204 +++++++++++++++++-
...-10-20-15-28-08.gh-issue-102988.dStNO7.rst | 8 +
4 files changed, 361 insertions(+), 21 deletions(-)
create mode 100644 Misc/NEWS.d/next/Library/2023-10-20-15-28-08.gh-issue-102988.dStNO7.rst
diff --git a/Doc/library/email.utils.rst b/Doc/library/email.utils.rst
index 4d0e920eb0..104229e9e5 100644
--- a/Doc/library/email.utils.rst
+++ b/Doc/library/email.utils.rst
@@ -60,13 +60,18 @@ of the new API.
begins with angle brackets, they are stripped off.
-.. function:: parseaddr(address)
+.. function:: parseaddr(address, *, strict=True)
Parse address -- which should be the value of some address-containing field such
as :mailheader:`To` or :mailheader:`Cc` -- into its constituent *realname* and
*email address* parts. Returns a tuple of that information, unless the parse
fails, in which case a 2-tuple of ``('', '')`` is returned.
+ If *strict* is true, use a strict parser which rejects malformed inputs.
+
+ .. versionchanged:: 3.13
+ Add *strict* optional parameter and reject malformed inputs by default.
+
.. function:: formataddr(pair, charset='utf-8')
@@ -84,12 +89,15 @@ of the new API.
Added the *charset* option.
-.. function:: getaddresses(fieldvalues)
+.. function:: getaddresses(fieldvalues, *, strict=True)
This method returns a list of 2-tuples of the form returned by ``parseaddr()``.
*fieldvalues* is a sequence of header field values as might be returned by
- :meth:`Message.get_all <email.message.Message.get_all>`. Here's a simple
- example that gets all the recipients of a message::
+ :meth:`Message.get_all <email.message.Message.get_all>`.
+
+ If *strict* is true, use a strict parser which rejects malformed inputs.
+
+ Here's a simple example that gets all the recipients of a message::
from email.utils import getaddresses
@@ -99,6 +107,9 @@ of the new API.
resent_ccs = msg.get_all('resent-cc', [])
all_recipients = getaddresses(tos + ccs + resent_tos + resent_ccs)
+ .. versionchanged:: 3.13
+ Add *strict* optional parameter and reject malformed inputs by default.
+
.. function:: parsedate(date)
diff --git a/Lib/email/utils.py b/Lib/email/utils.py
index 48d30160aa..7ca7a7c886 100644
--- a/Lib/email/utils.py
+++ b/Lib/email/utils.py
@@ -48,6 +48,7 @@ TICK = "'"
specialsre = re.compile(r'[][\\()<>@,:;".]')
escapesre = re.compile(r'[\\"]')
+
def _has_surrogates(s):
"""Return True if s contains surrogate-escaped binary data."""
# This check is based on the fact that unless there are surrogates, utf8
@@ -106,12 +107,127 @@ def formataddr(pair, charset='utf-8'):
return address
+def _iter_escaped_chars(addr):
+ pos = 0
+ escape = False
+ for pos, ch in enumerate(addr):
+ if escape:
+ yield (pos, '\\' + ch)
+ escape = False
+ elif ch == '\\':
+ escape = True
+ else:
+ yield (pos, ch)
+ if escape:
+ yield (pos, '\\')
-def getaddresses(fieldvalues):
- """Return a list of (REALNAME, EMAIL) for each fieldvalue."""
- all = COMMASPACE.join(str(v) for v in fieldvalues)
- a = _AddressList(all)
- return a.addresslist
+
+def _strip_quoted_realnames(addr):
+ """Strip real names between quotes."""
+ if '"' not in addr:
+ # Fast path
+ return addr
+
+ start = 0
+ open_pos = None
+ result = []
+ for pos, ch in _iter_escaped_chars(addr):
+ if ch == '"':
+ if open_pos is None:
+ open_pos = pos
+ else:
+ if start != open_pos:
+ result.append(addr[start:open_pos])
+ start = pos + 1
+ open_pos = None
+
+ if start < len(addr):
+ result.append(addr[start:])
+
+ return ''.join(result)
+
+
+supports_strict_parsing = True
+
+def getaddresses(fieldvalues, *, strict=True):
+ """Return a list of (REALNAME, EMAIL) or ('','') for each fieldvalue.
+
+ When parsing fails for a fieldvalue, a 2-tuple of ('', '') is returned in
+ its place.
+
+ If strict is true, use a strict parser which rejects malformed inputs.
+ """
+
+ # If strict is true, if the resulting list of parsed addresses is greater
+ # than the number of fieldvalues in the input list, a parsing error has
+ # occurred and consequently a list containing a single empty 2-tuple [('',
+ # '')] is returned in its place. This is done to avoid invalid output.
+ #
+ # Malformed input: getaddresses(['alice@example.com <bob@example.com>'])
+ # Invalid output: [('', 'alice@example.com'), ('', 'bob@example.com')]
+ # Safe output: [('', '')]
+
+ if not strict:
+ all = COMMASPACE.join(str(v) for v in fieldvalues)
+ a = _AddressList(all)
+ return a.addresslist
+
+ fieldvalues = [str(v) for v in fieldvalues]
+ fieldvalues = _pre_parse_validation(fieldvalues)
+ addr = COMMASPACE.join(fieldvalues)
+ a = _AddressList(addr)
+ result = _post_parse_validation(a.addresslist)
+
+ # Treat output as invalid if the number of addresses is not equal to the
+ # expected number of addresses.
+ n = 0
+ for v in fieldvalues:
+ # When a comma is used in the Real Name part it is not a deliminator.
+ # So strip those out before counting the commas.
+ v = _strip_quoted_realnames(v)
+ # Expected number of addresses: 1 + number of commas
+ n += 1 + v.count(',')
+ if len(result) != n:
+ return [('', '')]
+
+ return result
+
+
+def _check_parenthesis(addr):
+ # Ignore parenthesis in quoted real names.
+ addr = _strip_quoted_realnames(addr)
+
+ opens = 0
+ for pos, ch in _iter_escaped_chars(addr):
+ if ch == '(':
+ opens += 1
+ elif ch == ')':
+ opens -= 1
+ if opens < 0:
+ return False
+ return (opens == 0)
+
+
+def _pre_parse_validation(email_header_fields):
+ accepted_values = []
+ for v in email_header_fields:
+ if not _check_parenthesis(v):
+ v = "('', '')"
+ accepted_values.append(v)
+
+ return accepted_values
+
+
+def _post_parse_validation(parsed_email_header_tuples):
+ accepted_values = []
+ # The parser would have parsed a correctly formatted domain-literal
+ # The existence of an [ after parsing indicates a parsing failure
+ for v in parsed_email_header_tuples:
+ if '[' in v[1]:
+ v = ('', '')
+ accepted_values.append(v)
+
+ return accepted_values
def _format_timetuple_and_zone(timetuple, zone):
@@ -202,16 +318,33 @@ def parsedate_to_datetime(data):
tzinfo=datetime.timezone(datetime.timedelta(seconds=tz)))
-def parseaddr(addr):
+def parseaddr(addr, *, strict=True):
"""
Parse addr into its constituent realname and email address parts.
Return a tuple of realname and email address, unless the parse fails, in
which case return a 2-tuple of ('', '').
+
+ If strict is True, use a strict parser which rejects malformed inputs.
"""
- addrs = _AddressList(addr).addresslist
- if not addrs:
- return '', ''
+ if not strict:
+ addrs = _AddressList(addr).addresslist
+ if not addrs:
+ return ('', '')
+ return addrs[0]
+
+ if isinstance(addr, list):
+ addr = addr[0]
+
+ if not isinstance(addr, str):
+ return ('', '')
+
+ addr = _pre_parse_validation([addr])[0]
+ addrs = _post_parse_validation(_AddressList(addr).addresslist)
+
+ if not addrs or len(addrs) > 1:
+ return ('', '')
+
return addrs[0]
diff --git a/Lib/test/test_email/test_email.py b/Lib/test/test_email/test_email.py
index 761ea90b78..0c689643de 100644
--- a/Lib/test/test_email/test_email.py
+++ b/Lib/test/test_email/test_email.py
@@ -16,6 +16,7 @@ from unittest.mock import patch
import email
import email.policy
+import email.utils
from email.charset import Charset
from email.header import Header, decode_header, make_header
@@ -3263,15 +3264,154 @@ Foo
[('Al Person', 'aperson@dom.ain'),
('Bud Person', 'bperson@dom.ain')])
+ def test_getaddresses_comma_in_name(self):
+ """GH-106669 regression test."""
+ self.assertEqual(
+ utils.getaddresses(
+ [
+ '"Bud, Person" <bperson@dom.ain>',
+ 'aperson@dom.ain (Al Person)',
+ '"Mariusz Felisiak" <to@example.com>',
+ ]
+ ),
+ [
+ ('Bud, Person', 'bperson@dom.ain'),
+ ('Al Person', 'aperson@dom.ain'),
+ ('Mariusz Felisiak', 'to@example.com'),
+ ],
+ )
+
+ def test_parsing_errors(self):
+ """Test for parsing errors from CVE-2023-27043 and CVE-2019-16056"""
+ alice = 'alice@example.org'
+ bob = 'bob@example.com'
+ empty = ('', '')
+
+ # Test utils.getaddresses() and utils.parseaddr() on malformed email
+ # addresses: default behavior (strict=True) rejects malformed address,
+ # and strict=False which tolerates malformed address.
+ for invalid_separator, expected_non_strict in (
+ ('(', [(f'<{bob}>', alice)]),
+ (')', [('', alice), empty, ('', bob)]),
+ ('<', [('', alice), empty, ('', bob), empty]),
+ ('>', [('', alice), empty, ('', bob)]),
+ ('[', [('', f'{alice}[<{bob}>]')]),
+ (']', [('', alice), empty, ('', bob)]),
+ ('@', [empty, empty, ('', bob)]),
+ (';', [('', alice), empty, ('', bob)]),
+ (':', [('', alice), ('', bob)]),
+ ('.', [('', alice + '.'), ('', bob)]),
+ ('"', [('', alice), ('', f'<{bob}>')]),
+ ):
+ address = f'{alice}{invalid_separator}<{bob}>'
+ with self.subTest(address=address):
+ self.assertEqual(utils.getaddresses([address]),
+ [empty])
+ self.assertEqual(utils.getaddresses([address], strict=False),
+ expected_non_strict)
+
+ self.assertEqual(utils.parseaddr([address]),
+ empty)
+ self.assertEqual(utils.parseaddr([address], strict=False),
+ ('', address))
+
+ # Comma (',') is treated differently depending on strict parameter.
+ # Comma without quotes.
+ address = f'{alice},<{bob}>'
+ self.assertEqual(utils.getaddresses([address]),
+ [('', alice), ('', bob)])
+ self.assertEqual(utils.getaddresses([address], strict=False),
+ [('', alice), ('', bob)])
+ self.assertEqual(utils.parseaddr([address]),
+ empty)
+ self.assertEqual(utils.parseaddr([address], strict=False),
+ ('', address))
+
+ # Real name between quotes containing comma.
+ address = '"Alice, alice@example.org" <bob@example.com>'
+ expected_strict = ('Alice, alice@example.org', 'bob@example.com')
+ self.assertEqual(utils.getaddresses([address]), [expected_strict])
+ self.assertEqual(utils.getaddresses([address], strict=False), [expected_strict])
+ self.assertEqual(utils.parseaddr([address]), expected_strict)
+ self.assertEqual(utils.parseaddr([address], strict=False),
+ ('', address))
+
+ # Valid parenthesis in comments.
+ address = 'alice@example.org (Alice)'
+ expected_strict = ('Alice', 'alice@example.org')
+ self.assertEqual(utils.getaddresses([address]), [expected_strict])
+ self.assertEqual(utils.getaddresses([address], strict=False), [expected_strict])
+ self.assertEqual(utils.parseaddr([address]), expected_strict)
+ self.assertEqual(utils.parseaddr([address], strict=False),
+ ('', address))
+
+ # Invalid parenthesis in comments.
+ address = 'alice@example.org )Alice('
+ self.assertEqual(utils.getaddresses([address]), [empty])
+ self.assertEqual(utils.getaddresses([address], strict=False),
+ [('', 'alice@example.org'), ('', ''), ('', 'Alice')])
+ self.assertEqual(utils.parseaddr([address]), empty)
+ self.assertEqual(utils.parseaddr([address], strict=False),
+ ('', address))
+
+ # Two addresses with quotes separated by comma.
+ address = '"Jane Doe" <jane@example.net>, "John Doe" <john@example.net>'
+ self.assertEqual(utils.getaddresses([address]),
+ [('Jane Doe', 'jane@example.net'),
+ ('John Doe', 'john@example.net')])
+ self.assertEqual(utils.getaddresses([address], strict=False),
+ [('Jane Doe', 'jane@example.net'),
+ ('John Doe', 'john@example.net')])
+ self.assertEqual(utils.parseaddr([address]), empty)
+ self.assertEqual(utils.parseaddr([address], strict=False),
+ ('', address))
+
+ # Test email.utils.supports_strict_parsing attribute
+ self.assertEqual(email.utils.supports_strict_parsing, True)
+
def test_getaddresses_nasty(self):
- eq = self.assertEqual
- eq(utils.getaddresses(['foo: ;']), [('', '')])
- eq(utils.getaddresses(
- ['[]*-- =~$']),
- [('', ''), ('', ''), ('', '*--')])
- eq(utils.getaddresses(
- ['foo: ;', '"Jason R. Mastaler" <jason@dom.ain>']),
- [('', ''), ('Jason R. Mastaler', 'jason@dom.ain')])
+ for addresses, expected in (
+ (['"Sürname, Firstname" <to@example.com>'],
+ [('Sürname, Firstname', 'to@example.com')]),
+
+ (['foo: ;'],
+ [('', '')]),
+
+ (['foo: ;', '"Jason R. Mastaler" <jason@dom.ain>'],
+ [('', ''), ('Jason R. Mastaler', 'jason@dom.ain')]),
+
+ ([r'Pete(A nice \) chap) <pete(his account)@silly.test(his host)>'],
+ [('Pete (A nice ) chap his account his host)', 'pete@silly.test')]),
+
+ (['(Empty list)(start)Undisclosed recipients :(nobody(I know))'],
+ [('', '')]),
+
+ (['Mary <@machine.tld:mary@example.net>, , jdoe@test . example'],
+ [('Mary', 'mary@example.net'), ('', ''), ('', 'jdoe@test.example')]),
+
+ (['John Doe <jdoe@machine(comment). example>'],
+ [('John Doe (comment)', 'jdoe@machine.example')]),
+
+ (['"Mary Smith: Personal Account" <smith@home.example>'],
+ [('Mary Smith: Personal Account', 'smith@home.example')]),
+
+ (['Undisclosed recipients:;'],
+ [('', '')]),
+
+ ([r'<boss@nil.test>, "Giant; \"Big\" Box" <bob@example.net>'],
+ [('', 'boss@nil.test'), ('Giant; "Big" Box', 'bob@example.net')]),
+ ):
+ with self.subTest(addresses=addresses):
+ self.assertEqual(utils.getaddresses(addresses),
+ expected)
+ self.assertEqual(utils.getaddresses(addresses, strict=False),
+ expected)
+
+ addresses = ['[]*-- =~$']
+ self.assertEqual(utils.getaddresses(addresses),
+ [('', '')])
+ self.assertEqual(utils.getaddresses(addresses, strict=False),
+ [('', ''), ('', ''), ('', '*--')])
def test_getaddresses_embedded_comment(self):
"""Test proper handling of a nested comment"""
@@ -3460,6 +3600,54 @@ multipart/report
m = cls(*constructor, policy=email.policy.default)
self.assertIs(m.policy, email.policy.default)
+ def test_iter_escaped_chars(self):
+ self.assertEqual(list(utils._iter_escaped_chars(r'a\\b\"c\\"d')),
+ [(0, 'a'),
+ (2, '\\\\'),
+ (3, 'b'),
+ (5, '\\"'),
+ (6, 'c'),
+ (8, '\\\\'),
+ (9, '"'),
+ (10, 'd')])
+ self.assertEqual(list(utils._iter_escaped_chars('a\\')),
+ [(0, 'a'), (1, '\\')])
+
+ def test_strip_quoted_realnames(self):
+ def check(addr, expected):
+ self.assertEqual(utils._strip_quoted_realnames(addr), expected)
+
+ check('"Jane Doe" <jane@example.net>, "John Doe" <john@example.net>',
+ ' <jane@example.net>, <john@example.net>')
+ check(r'"Jane \"Doe\"." <jane@example.net>',
+ ' <jane@example.net>')
+
+ # special cases
+ check(r'before"name"after', 'beforeafter')
+ check(r'before"name"', 'before')
+ check(r'b"name"', 'b') # single char
+ check(r'"name"after', 'after')
+ check(r'"name"a', 'a') # single char
+ check(r'"name"', '')
+
+ # no change
+ for addr in (
+ 'Jane Doe <jane@example.net>, John Doe <john@example.net>',
+ 'lone " quote',
+ ):
+ self.assertEqual(utils._strip_quoted_realnames(addr), addr)
+
+
+ def test_check_parenthesis(self):
+ addr = 'alice@example.net'
+ self.assertTrue(utils._check_parenthesis(f'{addr} (Alice)'))
+ self.assertFalse(utils._check_parenthesis(f'{addr} )Alice('))
+ self.assertFalse(utils._check_parenthesis(f'{addr} (Alice))'))
+ self.assertFalse(utils._check_parenthesis(f'{addr} ((Alice)'))
+
+ # Ignore real name between quotes
+ self.assertTrue(utils._check_parenthesis(f'")Alice((" {addr}'))
+
# Test the iterator/generators
class TestIterators(TestEmailBase):
diff --git a/Misc/NEWS.d/next/Library/2023-10-20-15-28-08.gh-issue-102988.dStNO7.rst b/Misc/NEWS.d/next/Library/2023-10-20-15-28-08.gh-issue-102988.dStNO7.rst
new file mode 100644
index 0000000000..3d0e9e4078
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-10-20-15-28-08.gh-issue-102988.dStNO7.rst
@@ -0,0 +1,8 @@
+:func:`email.utils.getaddresses` and :func:`email.utils.parseaddr` now
+return ``('', '')`` 2-tuples in more situations where invalid email
+addresses are encountered instead of potentially inaccurate values. Add
+optional *strict* parameter to these two functions: use ``strict=False`` to
+get the old behavior, accept malformed inputs.
+``getattr(email.utils, 'supports_strict_parsing', False)`` can be use to check
+if the *strict* paramater is available. Patch by Thomas Dwyer and Victor
+Stinner to improve the CVE-2023-27043 fix.
From 4df4fad359c280f2328b98ea9b4414f244624a58 Mon Sep 17 00:00:00 2001
From: Lumir Balhar <lbalhar@redhat.com>
Date: Mon, 18 Dec 2023 20:15:33 +0100
Subject: [PATCH] Make it possible to disable strict parsing in email module
---
Doc/library/email.utils.rst | 26 +++++++++++
Lib/email/utils.py | 54 ++++++++++++++++++++++-
Lib/test/test_email/test_email.py | 72 ++++++++++++++++++++++++++++++-
3 files changed, 149 insertions(+), 3 deletions(-)
diff --git a/Doc/library/email.utils.rst b/Doc/library/email.utils.rst
index d1e1898591..7aef773b5f 100644
--- a/Doc/library/email.utils.rst
+++ b/Doc/library/email.utils.rst
@@ -69,6 +69,19 @@ of the new API.
If *strict* is true, use a strict parser which rejects malformed inputs.
+ The default setting for *strict* is set to ``True``, but you can override
+ it by setting the environment variable ``PYTHON_EMAIL_DISABLE_STRICT_ADDR_PARSING``
+ to non-empty string.
+
+ Additionally, you can permanently set the default value for *strict* to
+ ``False`` by creating the configuration file ``/etc/python/email.cfg``
+ with the following content:
+
+ .. code-block:: ini
+
+ [email_addr_parsing]
+ PYTHON_EMAIL_DISABLE_STRICT_ADDR_PARSING = true
+
.. versionchanged:: 3.13
Add *strict* optional parameter and reject malformed inputs by default.
@@ -97,6 +110,19 @@ of the new API.
If *strict* is true, use a strict parser which rejects malformed inputs.
+ The default setting for *strict* is set to ``True``, but you can override
+ it by setting the environment variable ``PYTHON_EMAIL_DISABLE_STRICT_ADDR_PARSING``
+ to non-empty string.
+
+ Additionally, you can permanently set the default value for *strict* to
+ ``False`` by creating the configuration file ``/etc/python/email.cfg``
+ with the following content:
+
+ .. code-block:: ini
+
+ [email_addr_parsing]
+ PYTHON_EMAIL_DISABLE_STRICT_ADDR_PARSING = true
+
Here's a simple example that gets all the recipients of a message::
from email.utils import getaddresses
diff --git a/Lib/email/utils.py b/Lib/email/utils.py
index f83b7e5d7e..b8e90ceb8e 100644
--- a/Lib/email/utils.py
+++ b/Lib/email/utils.py
@@ -48,6 +48,46 @@ TICK = "'"
specialsre = re.compile(r'[][\\()<>@,:;".]')
escapesre = re.compile(r'[\\"]')
+_EMAIL_CONFIG_FILE = "/etc/python/email.cfg"
+_cached_strict_addr_parsing = None
+
+
+def _use_strict_email_parsing():
+ """"Cache implementation for _cached_strict_addr_parsing"""
+ global _cached_strict_addr_parsing
+ if _cached_strict_addr_parsing is None:
+ _cached_strict_addr_parsing = _use_strict_email_parsing_impl()
+ return _cached_strict_addr_parsing
+
+
+def _use_strict_email_parsing_impl():
+ """Returns True if strict email parsing is not disabled by
+ config file or env variable.
+ """
+ disabled = bool(os.environ.get("PYTHON_EMAIL_DISABLE_STRICT_ADDR_PARSING"))
+ if disabled:
+ return False
+
+ try:
+ file = open(_EMAIL_CONFIG_FILE)
+ except FileNotFoundError:
+ pass
+ else:
+ with file:
+ import configparser
+ config = configparser.ConfigParser(
+ interpolation=None,
+ comment_prefixes=('#', ),
+
+ )
+ config.read_file(file)
+ disabled = config.getboolean('email_addr_parsing', "PYTHON_EMAIL_DISABLE_STRICT_ADDR_PARSING", fallback=None)
+
+ if disabled:
+ return False
+
+ return True
+
def _has_surrogates(s):
"""Return True if s contains surrogate-escaped binary data."""
@@ -149,7 +189,7 @@ def _strip_quoted_realnames(addr):
supports_strict_parsing = True
-def getaddresses(fieldvalues, *, strict=True):
+def getaddresses(fieldvalues, *, strict=None):
"""Return a list of (REALNAME, EMAIL) or ('','') for each fieldvalue.
When parsing fails for a fieldvalue, a 2-tuple of ('', '') is returned in
@@ -158,6 +198,11 @@ def getaddresses(fieldvalues, *, strict=True):
If strict is true, use a strict parser which rejects malformed inputs.
"""
+ # If default is used, it's True unless disabled
+ # by env variable or config file.
+ if strict == None:
+ strict = _use_strict_email_parsing()
+
# If strict is true, if the resulting list of parsed addresses is greater
# than the number of fieldvalues in the input list, a parsing error has
# occurred and consequently a list containing a single empty 2-tuple [('',
@@ -330,7 +375,7 @@ def parsedate_to_datetime(data):
tzinfo=datetime.timezone(datetime.timedelta(seconds=tz)))
-def parseaddr(addr, *, strict=True):
+def parseaddr(addr, *, strict=None):
"""
Parse addr into its constituent realname and email address parts.
@@ -339,6 +384,11 @@ def parseaddr(addr, *, strict=True):
If strict is True, use a strict parser which rejects malformed inputs.
"""
+ # If default is used, it's True unless disabled
+ # by env variable or config file.
+ if strict == None:
+ strict = _use_strict_email_parsing()
+
if not strict:
addrs = _AddressList(addr).addresslist
if not addrs:
diff --git a/Lib/test/test_email/test_email.py b/Lib/test/test_email/test_email.py
index ce36efc1b1..05ea201b68 100644
--- a/Lib/test/test_email/test_email.py
+++ b/Lib/test/test_email/test_email.py
@@ -7,6 +7,9 @@ import time
import base64
import unittest
import textwrap
+import contextlib
+import tempfile
+import os
from io import StringIO, BytesIO
from itertools import chain
@@ -41,7 +44,7 @@ from email import iterators
from email import base64mime
from email import quoprimime
-from test.support import unlink, start_threads
+from test.support import unlink, start_threads, EnvironmentVarGuard, swap_attr
from test.test_email import openfile, TestEmailBase
# These imports are documented to work, but we are testing them using a
@@ -3313,6 +3316,73 @@ Foo
# Test email.utils.supports_strict_parsing attribute
self.assertEqual(email.utils.supports_strict_parsing, True)
+ def test_parsing_errors_strict_set_via_env_var(self):
+ address = 'alice@example.org )Alice('
+ empty = ('', '')
+
+ # Reset cached default value to make the function
+ # reload the config file provided below.
+ utils._cached_strict_addr_parsing = None
+
+ # Strict disabled via env variable, old behavior expected
+ with EnvironmentVarGuard() as environ:
+ environ["PYTHON_EMAIL_DISABLE_STRICT_ADDR_PARSING"] = "1"
+
+ self.assertEqual(utils.getaddresses([address]),
+ [('', 'alice@example.org'), ('', ''), ('', 'Alice')])
+ self.assertEqual(utils.parseaddr([address]), ('', address))
+
+ # Clear cache again
+ utils._cached_strict_addr_parsing = None
+
+ # Default strict=True, empty result expected
+ self.assertEqual(utils.getaddresses([address]), [empty])
+ self.assertEqual(utils.parseaddr([address]), empty)
+
+ # Clear cache again
+ utils._cached_strict_addr_parsing = None
+
+ # Empty string in env variable = strict parsing enabled (default)
+ with EnvironmentVarGuard() as environ:
+ environ["PYTHON_EMAIL_DISABLE_STRICT_ADDR_PARSING"] = ""
+
+ # Default strict=True, empty result expected
+ self.assertEqual(utils.getaddresses([address]), [empty])
+ self.assertEqual(utils.parseaddr([address]), empty)
+
+ @contextlib.contextmanager
+ def _email_strict_parsing_conf(self):
+ """Context for the given email strict parsing configured in config file"""
+ with tempfile.TemporaryDirectory() as tmpdirname:
+ filename = os.path.join(tmpdirname, 'conf.cfg')
+ with swap_attr(utils, "_EMAIL_CONFIG_FILE", filename):
+ with open(filename, 'w') as file:
+ file.write('[email_addr_parsing]\n')
+ file.write('PYTHON_EMAIL_DISABLE_STRICT_ADDR_PARSING = true')
+ utils._EMAIL_CONFIG_FILE = filename
+ yield
+
+ def test_parsing_errors_strict_disabled_via_config_file(self):
+ address = 'alice@example.org )Alice('
+ empty = ('', '')
+
+ # Reset cached default value to make the function
+ # reload the config file provided below.
+ utils._cached_strict_addr_parsing = None
+
+ # Strict disabled via config file, old results expected
+ with self._email_strict_parsing_conf():
+ self.assertEqual(utils.getaddresses([address]),
+ [('', 'alice@example.org'), ('', ''), ('', 'Alice')])
+ self.assertEqual(utils.parseaddr([address]), ('', address))
+
+ # Clear cache again
+ utils._cached_strict_addr_parsing = None
+
+ # Default strict=True, empty result expected
+ self.assertEqual(utils.getaddresses([address]), [empty])
+ self.assertEqual(utils.parseaddr([address]), empty)
+
def test_getaddresses_nasty(self):
for addresses, expected in (
(['"Sürname, Firstname" <to@example.com>'],
--
2.43.0

View File

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@ -13,11 +13,11 @@ URL: https://www.python.org/
# WARNING When rebasing to a new Python version,
# remember to update the python3-docs package as well
%global general_version %{pybasever}.16
%global general_version %{pybasever}.18
#global prerel ...
%global upstream_version %{general_version}%{?prerel}
Version: %{general_version}%{?prerel:~%{prerel}}
Release: 1%{?dist}
Release: 3%{?dist}
License: Python
@ -325,7 +325,7 @@ Patch189: 00189-use-rpm-wheels.patch
# The versions are written in Lib/ensurepip/__init__.py, this patch removes them.
# When the bundled setuptools/pip wheel is updated, the patch no longer applies cleanly.
# In such cases, the patch needs to be amended and the versions updated here:
%global pip_version 22.0.4
%global pip_version 23.0.1
%global setuptools_version 58.1.0
# 00251 # 1b1047c14ff98eae6d355b4aac4df3e388813f62
@ -399,6 +399,36 @@ Patch329: 00329-fips.patch
# a nightmare because it's basically a binary file.
Patch353: 00353-architecture-names-upstream-downstream.patch
# 00397 #
# Add filters for tarfile extraction (CVE-2007-4559, PEP-706)
# First patch fixes determination of symlink targets, which were treated
# as relative to the root of the archive,
# rather than the directory containing the symlink.
# Not yet upstream as of this writing.
# The second patch is Red Hat configuration, see KB for documentation:
# - https://access.redhat.com/articles/7004769
Patch397: 00397-tarfile-filter.patch
# 00414 #
#
# Skip test_pair() and test_speech128() of test_zlib on s390x since
# they fail if zlib uses the s390x hardware accelerator.
Patch414: 00414-skip_test_zlib_s390x.patch
# 00415 #
# [CVE-2023-27043] gh-102988: Reject malformed addresses in email.parseaddr() (#111116)
#
# Detect email address parsing errors and return empty tuple to
# indicate the parsing error (old API). Add an optional 'strict'
# parameter to getaddresses() and parseaddr() functions. Patch by
# Thomas Dwyer.
#
# Upstream PR: https://github.com/python/cpython/pull/111116
#
# Second patch implmenets the possibility to restore the old behavior via
# config file or environment variable.
Patch415: 00415-cve-2023-27043-gh-102988-reject-malformed-addresses-in-email-parseaddr-111116.patch
# (New patches go here ^^^)
#
# When adding new patches to "python" and "python3" in Fedora, EL, etc.,
@ -1800,6 +1830,32 @@ CheckPython optimized
# ======================================================
%changelog
* Wed Jan 24 2024 Lumír Balhar <lbalhar@redhat.com> - 3.9.18-3
- Fix tests on s390x with hw acceleration
Resolves: RHEL-13043
* Thu Jan 04 2024 Lumír Balhar <lbalhar@redhat.com> - 3.9.18-2
- Security fix for CVE-2023-27043
Resolves: RHEL-20613
* Thu Sep 07 2023 Charalampos Stratakis <cstratak@redhat.com> - 3.9.18-1
- Update to 3.9.18
- Security fix for CVE-2023-40217
Resolves: RHEL-3043
* Wed Aug 09 2023 Petr Viktorin <pviktori@redhat.com> - 3.9.17-2
- Fix symlink handling in the fix for CVE-2023-24329
Resolves: rhbz#263261
* Mon Jun 26 2023 Charalampos Stratakis <cstratak@redhat.com> - 3.9.17-1
- Update to 3.9.17
- Security fix for CVE-2023-24329
Resolves: rhbz#2173917
* Tue Mar 07 2023 Petr Viktorin <pviktori@redhat.com> - 3.9.16-2
- Add filters for tarfile extraction (CVE-2007-4559, PEP-706)
Resolves: rhbz#263261
* Thu Dec 08 2022 Charalampos Stratakis <cstratak@redhat.com> - 3.9.16-1
- Update to 3.9.16
- Security fixes for CVE-2022-42919 and CVE-2022-45061