.. bpo: 38243
.. date: 2019-09-25-13-21-09
.. nonce: 1pfz24
.. release date: 2019-10-07
.. section: Security

Escape the server title of :class:`DocXMLRPCServer.DocXMLRPCServer` when
rendering the document page as HTML. (Contributed by Dong-hee Na in
:issue:`38243`.)

..

.. bpo: 38174
.. date: 2019-09-23-21-02-46
.. nonce: MeWuJd
.. section: Security

Update vendorized expat library version to 2.2.8, which resolves
CVE-2019-15903.

..

.. bpo: 34631
.. date: 2019-06-17-08-43-19
.. nonce: pJ8CGR
.. section: Security

Updated OpenSSL to 1.0.2s in Windows installer

..

.. bpo: 35647
.. date: 2019-05-20-00-49-29
.. nonce: oWmiGU
.. section: Security

Don't set cookie for a request when the request path is a prefix match of
the cookie's path attribute but doesn't end with "/". Patch by Karthikeyan
Singaravelan.

..

.. bpo: 35121
.. date: 2019-05-20-00-35-12
.. nonce: RRi-HU
.. section: Security

Don't send cookies of domain A without Domain attribute to domain B when
domain A is a suffix match of domain B while using a cookiejar with
:class:`cookielib.DefaultCookiePolicy` policy. Patch by Karthikeyan
Singaravelan.

..

.. bpo: 34155
.. date: 2019-05-04-13-33-37
.. nonce: MJll68
.. section: Security

Fix parsing of invalid email addresses with more than one ``@`` (e.g.
a@b@c.com.) to not return the part before 2nd ``@`` as valid email address.
Patch by maxking & jpic.

..

.. bpo: 36742
.. date: 2019-04-29-15-34-59
.. nonce: QCUY0i
.. section: Security

Fixes mishandling of pre-normalization characters in urlsplit().

..

.. bpo: 30458
.. date: 2019-04-10-08-53-30
.. nonce: 51E-DA
.. section: Security

Address CVE-2019-9740 by disallowing URL paths with embedded whitespace or
control characters through into the underlying http client request.  Such
potentially malicious header injection URLs now cause an httplib.InvalidURL
exception to be raised.

..

.. bpo: 36216
.. date: 2019-03-06-09-38-40
.. nonce: 6q1m4a
.. section: Security

Changes urlsplit() to raise ValueError when the URL contains characters that
decompose under IDNA encoding (NFKC-normalization) into characters that
affect how the URL is parsed.

..

.. bpo: 35907
.. date: 2019-02-13-17-21-10
.. nonce: ckk2zg
.. section: Security

CVE-2019-9948: Avoid file reading by disallowing ``local-file://`` and
``local_file://`` URL schemes in :func:`urllib.urlopen`,
:meth:`urllib.URLopener.open` and :meth:`urllib.URLopener.retrieve`.

..

.. bpo: 38106
.. date: 2019-09-12-16-36-16
.. nonce: 4pApn7
.. section: Core and Builtins

Fix race in PyThread_release_lock that was leading to memory corruption and
deadlocks. The fix applies to POSIX systems where Python locks are
implemented with mutex and condition variable because POSIX semaphores are
either not provided, or are known to be broken. One particular example of
such system is macOS.

..

.. bpo: 37329
.. date: 2019-06-18-15-08-32
.. nonce: 7XVDRv
.. section: Core and Builtins

valgrind: suppress a false alarm in memory leak checks. _PyWarnings_Init()
only allocates memory once at startup but it is not released at exit. Ignore
this issue to be able to catch other bugs more easily.

..

.. bpo: 26423
.. date: 2019-05-27-18-00-19
.. nonce: RgUOE8
.. section: Core and Builtins

Fix possible overflow in ``wrap_lenfunc()`` when ``sizeof(long) <
sizeof(Py_ssize_t)`` (e.g., 64-bit Windows).

..

.. bpo: 27987
.. date: 2019-04-16-11-52-21
.. nonce: n2_DcQ
.. section: Core and Builtins

pymalloc returns memory blocks aligned by 16 bytes, instead of 8 bytes, on
64-bit platforms to conform x86-64 ABI. Recent compilers assume this
alignment more often. Patch by Inada Naoki.

..

.. bpo: 36504
.. date: 2019-04-02-04-10-32
.. nonce: k_V8Bm
.. section: Core and Builtins

Fix signed integer overflow in _ctypes.c's ``PyCArrayType_new()``.

..

.. bpo: 36459
.. date: 2019-03-27-22-35-16
.. nonce: UAvkKp
.. section: Core and Builtins

Fix a possible double ``PyMem_FREE()`` due to tokenizer.c's ``tok_nextc()``.

..

.. bpo: 36430
.. date: 2019-03-25-23-37-26
.. nonce: sd9xxQ
.. section: Core and Builtins

Fix a possible reference leak in :func:`itertools.count`.

..

.. bpo: 18368
.. date: 2019-03-14-17-30-46
.. nonce: WXaHAo
.. section: Core and Builtins

PyOS_StdioReadline() no longer leaks memory when realloc() fails.

..

.. bpo: 36262
.. date: 2019-03-11-15-37-33
.. nonce: v3N6Fz
.. section: Core and Builtins

Fix an unlikely memory leak on conversion from string to float in the
function ``_Py_dg_strtod()`` used by ``float(str)``, ``complex(str)``,
:func:`pickle.load`, :func:`marshal.load`, etc.

..

.. bpo: 36149
.. date: 2019-02-28-13-52-18
.. nonce: GJdnh4
.. section: Core and Builtins

Fix use of uninitialized memory in cPickle when reading a truncated pickle
from a file object.

..

.. bpo: 33006
.. date: 2018-03-07-09-10-42
.. nonce: Bzx3LA
.. section: Core and Builtins

Clarified Doc string for builtin filter function. 2nd Argument can be any
iterable. Patch by Tony Flury

..

.. bpo: 38216
.. date: 2019-09-27-15-24-45
.. nonce: -7yvZR
.. section: Library

Allow the rare code that wants to send invalid http requests from the
`http.client` library a way to do so.  The fixes for bpo-30458 led to
breakage for some projects that were relying on this ability to test their
own behavior in the face of bad requests.

..

.. bpo: 38175
.. date: 2019-09-15-10-30-33
.. nonce: 61XlUv
.. section: Library

Fix a memory leak in comparison of :class:`sqlite3.Row` objects.

..

.. bpo: 33936
.. date: 2019-09-14-10-34-00
.. nonce: 8wCI_n
.. section: Library

_hashlib no longer calls obsolete OpenSSL initialization function with
OpenSSL 1.1.0+.

..

.. bpo: 34410
.. date: 2019-08-31-01-52-59
.. nonce: 7KbWZQ
.. section: Library

Fixed a crash in the :func:`tee` iterator when re-enter it. RuntimeError is
now raised in this case.

..

.. bpo: 37965
.. date: 2019-08-28-14-04-18
.. nonce: 7xGE-C
.. section: Library

Fix C compiler warning caused by distutils.ccompiler.CCompiler.has_function.

..

.. bpo: 34521
.. date: 2019-08-23-14-47-09
.. nonce: Y2BYu5
.. section: Library

Fix file descriptors transfer in multiprocessing on FreeBSD: use
``CMSG_SPACE()`` rather than ``CMSG_LEN()``; see :rfc:`3542`.

..

.. bpo: 37664
.. date: 2019-07-24-18-27-44
.. nonce: o-GYZC
.. section: Library

Update wheels bundled with ensurepip (pip 19.2.3 and setuptools 41.2.0)

..

.. bpo: 37437
.. date: 2019-06-27-20-33-50
.. nonce: du39_A
.. section: Library

Update vendorized expat version to 2.2.7.

..

.. bpo: 36742
.. date: 2019-06-10-12-02-45
.. nonce: UEdHXJ
.. section: Library

:func:`urlparse.urlsplit` error message for invalid ``netloc`` according to
NFKC normalization is now a :class:`str` string, rather than a
:class:`unicode` string, to prevent error when displaying the error.

..

.. bpo: 12639
.. date: 2019-05-30-16-16-47
.. nonce: TQFOR4
.. section: Library

:meth:`msilib.Directory.start_component()` no longer fails if *keyfile* is
not ``None``.

..

.. bpo: 36713
.. date: 2019-05-23-15-57-36
.. nonce: sjPhnf
.. section: Library

Rename the :meth:`test_ascii_replace` to :meth:`test_ascii_strict`.

..

.. bpo: 28552
.. date: 2019-04-18-16-10-29
.. nonce: MW1TLt
.. section: Library

Fix :mod:`distutils.sysconfig` if :data:`sys.executable` is ``None`` or an
empty string: use :func:`os.getcwd` to initialize ``project_base``.  Fix
also the distutils build command: don't use :data:`sys.executable` if it is
``None`` or an empty string.

..

.. bpo: 36337
.. date: 2019-03-18-10-08-30
.. nonce: QhJnXy
.. section: Library

Fix buffer overflow in :meth:`~socket.socket.send` and
:meth:`~socket.socket.sendall` methods of :func:`socket.socket` for data
larger than 2 GiB.

..

.. bpo: 36291
.. date: 2019-03-14-15-54-46
.. nonce: UalHXP
.. section: Library

Fix a possible reference leak in the json module.

..

.. bpo: 36289
.. date: 2019-03-14-15-42-48
.. nonce: wYKS47
.. section: Library

Fix a possible reference leak in the io module.

..

.. bpo: 36212
.. date: 2019-03-14-14-40-22
.. nonce: IEgRI8
.. section: Library

Fix two possible reference leaks in the hotshot module.

..

.. bpo: 36235
.. date: 2019-03-08-13-32-21
.. nonce: _M72wU
.. section: Library

Fix ``CFLAGS`` in ``customize_compiler()`` of ``distutils.sysconfig``: when
the ``CFLAGS`` environment variable is defined, don't override ``CFLAGS``
variable with the ``OPT`` variable anymore. Initial patch written by David
Malcolm.

..

.. bpo: 35807
.. date: 2019-03-06-13-21-33
.. nonce: W7mmu3
.. section: Library

Update ensurepip to install pip 19.0.3 and setuptools 40.8.0.

..

.. bpo: 36186
.. date: 2019-03-04-16-39-16
.. nonce: Hqw1A_
.. section: Library

Fix linuxaudiodev.linux_audio_device() error handling: close the internal
file descriptor if it fails to open the device.

..

.. bpo: 13096
.. date: 2019-03-04-16-13-01
.. nonce: SGPt_n
.. section: Library

Fix memory leak in ctypes POINTER handling of large values.

..

.. bpo: 36179
.. date: 2019-03-04-10-42-46
.. nonce: jEyuI-
.. section: Library

Fix two unlikely reference leaks in _hashopenssl. The leaks only occur in
out-of-memory cases.

..

.. bpo: 36106
.. date: 2019-02-25-13-21-43
.. nonce: VuhEiQ
.. section: Library

Resolve potential name clash with libm's sinpi(). Patch by Dmitrii
Pasechnik.

..

.. bpo: 31292
.. date: 2017-08-30-20-27-00
.. nonce: dKIaZb
.. section: Library

Fix ``setup.py check --restructuredtext`` for files containing ``include``
directives.

..

.. bpo: 37487
.. date: 2019-07-06-17-19-26
.. nonce: QagfZ5
.. section: Documentation

Fix PyList_GetItem index description to include 0.

..

.. bpo: 37149
.. date: 2019-07-06-02-19-02
.. nonce: NumHn3
.. section: Documentation

Replace the dead link to the Tkinter 8.5 reference by John Shipman, New
Mexico Tech, with a link to the archive.org copy.

..

.. bpo: 35126
.. date: 2019-02-18-10-01-07
.. nonce: LWwl8X
.. section: Documentation

Improve the examples in the "How do I convert a number to string?" question
of the "Programming" section of the FAQ.  Contributed by Stéphane Wirtel.

..

.. bpo: 35605
.. date: 2018-12-30-09-56-13
.. nonce: gAWt32
.. section: Documentation

Fix documentation build for sphinx<1.6.  Patch by Anthony Sottile.

..

.. bpo: 35564
.. date: 2018-12-22-22-52-05
.. nonce: TuEU_D
.. section: Documentation

Explicitly set master_doc variable in conf.py for compliance with Sphinx 2.0

..

.. bpo: 33832
.. date: 2018-06-15-15-57-37
.. nonce: xBFhKw
.. section: Documentation

Add glossary entry for 'magic method'.

..

.. bpo: 37411
.. date: 2019-06-26-15-28-45
.. nonce: 5lGNhM
.. section: Tests

Fix test_wsgiref.testEnviron() to no longer depend on the environment
variables (don't fail if "X" variable is set).

..

.. bpo: 37359
.. date: 2019-06-24-10-47-07
.. nonce: CkdtyO
.. section: Tests

Add --cleanup option to python3 -m test to remove ``test_python_*``
directories of previous failed jobs. Add "make cleantest" to run ``python3
-m test --cleanup``.

..

.. bpo: 37362
.. date: 2019-06-21-15-47-33
.. nonce: D3xppx
.. section: Tests

test_gdb no longer fails if it gets an "unexpected" message on stderr: it
now ignores stderr. The purpose of test_gdb is to test that python-gdb.py
commands work as expected, not to test gdb.

..

.. bpo: 36816
.. date: 2019-05-08-15-55-46
.. nonce: WBKRGZ
.. section: Tests

Update Lib/test/selfsigned_pythontestdotnet.pem to match
self-signed.pythontest.net's new TLS certificate.

..

.. bpo: 35925
.. date: 2019-05-06-18-29-54
.. nonce: gwQPuC
.. section: Tests

Skip specific nntplib and ssl networking tests when they would otherwise
fail due to a modern OS or distro with a default OpenSSL policy of rejecting
connections to servers with weak certificates or disabling TLS below
TLSv1.2.

..

.. bpo: 36560
.. date: 2019-04-09-14-08-02
.. nonce: _ejeOr
.. section: Tests

Fix reference leak hunting in regrtest: compute also deltas (of reference
count and file descriptor count) during warmup, to ensure that everything is
initialized before starting to hunt reference leaks.

..

.. bpo: 36234
.. date: 2019-03-08-12-53-37
.. nonce: NRVK6W
.. section: Tests

test_posix.PosixUidGidTests: add tests for invalid uid/gid type (str). Patch
written by David Malcolm.

..

.. bpo: 36019
.. date: 2019-03-05-13-27-36
.. nonce: ebUjCm
.. section: Tests

Add test.support.TEST_HTTP_URL and replace references of
http://www.example.com by this new constant. Contributed by Stéphane Wirtel.

..

.. bpo: 27313
.. date: 2019-02-24-03-19-43
.. nonce: Sj9veH
.. section: Tests

Avoid test_ttk_guionly ComboboxTest failure with macOS Cocoa Tk.

..

.. bpo: 26386
.. date: 2019-02-24-02-44-52
.. nonce: YZylPP
.. section: Tests

Re-enable missing widget testcases in test_ttk_guionly.

..

.. bpo: 34836
.. date: 2019-01-11-14-01-19
.. nonce: 7fat9-
.. section: Tests

Fix ``test_default_ecdh_curve`` when TLSv1.3 is enabled by default.

..

.. bpo: 38301
.. date: 2019-09-28-02-37-11
.. nonce: 123456
.. section: Build

In Solaris family, we must be sure to use ``-D_REENTRANT``. Patch by Jesús
Cea Avión.

..

.. bpo: 14353
.. date: 2019-05-12-10-52-37
.. nonce: LK1qWM
.. section: Build

Fix detection of the bind_textdomain_codeset function for building gettext
support into the locale module.

..

.. bpo: 36605
.. date: 2019-04-11-18-50-58
.. nonce: gk5czf
.. section: Build

``make tags`` and ``make TAGS`` now also parse ``Modules/_io/*.c`` and
``Modules/_io/*.h``.

..

.. bpo: 35264
.. date: 2018-11-16-15-19-09
.. nonce: h5GxH3
.. section: Build

Fix SSL module build with OpenSSL 1.1.0

..

.. bpo: 38117
.. date: 2019-09-16-12-47-12
.. nonce: JaiB0X
.. section: Windows

Updates bundled OpenSSL to 1.0.2t

..

.. bpo: 37445
.. date: 2019-06-28-18-10-29
.. nonce: LsdYO6
.. section: Windows

Include the ``FORMAT_MESSAGE_IGNORE_INSERTS`` flag in ``FormatMessageW()``
calls.

..

.. bpo: 35360
.. date: 2019-06-18-09-53-15
.. nonce: tdqSmo
.. section: Windows

Update Windows builds to use SQLite 3.28.0.

..

.. bpo: 1104
.. date: 2017-11-24-12-53-54
.. nonce: 1CWSZp
.. section: Windows

Correctly handle string length in ``msilib.SummaryInfo.GetProperty()`` to
prevent it from truncating the last character.

..

.. bpo: 38117
.. date: 2019-09-15-21-45-15
.. nonce: _U9F2r
.. section: macOS

Updated OpenSSL to 1.0.2t in macOS installer for 2.7.x.

..

.. bpo: 19960
.. date: 2019-06-20-01-16-16
.. nonce: LpLUPF
.. section: macOS

When building 2.7 on macOS without system header files installed in
``/usr/include``, a few extension modules dependent on system-supplied
third-party libraries were not being built, most notably zlib.

..

.. bpo: 35360
.. date: 2019-06-18-10-02-11
.. nonce: -CWbfy
.. section: macOS

Update macOS installer to use SQLite 3.28.0.

..

.. bpo: 34631
.. date: 2019-06-18-05-39-01
.. nonce: StdZhE
.. section: macOS

Updated OpenSSL to 1.0.2s in macOS installer.

..

.. bpo: 36231
.. date: 2019-06-03-05-49-49
.. nonce: RfmW_p
.. section: macOS

Support building Python on macOS without /usr/include installed. As of macOS
10.14, system header files are only available within an SDK provided by
either the Command Line Tools or the Xcode app.

..

.. bpo: 37177
.. date: 2019-06-07-00-17-41
.. nonce: voU6pQ
.. section: IDLE

Properly 'attach' search dialogs to their main window so that they behave
like other dialogs and do not get hidden behind their main window.

..

.. bpo: 13102
.. date: 2019-05-05-16-27-53
.. nonce: AGNWYJ
.. section: IDLE

When saving a file, call os.fsync() so bits are flushed to e.g. USB drive.

..

.. bpo: 37675
.. date: 2019-07-24-16-20-54
.. nonce: 951Cvf
.. section: Tools/Demos

2to3 now works when run from a zipped standard library.

..

.. bpo: 14546
.. date: 2019-04-30-14-30-29
.. nonce: r38Y-6
.. section: Tools/Demos

Fix the argument handling in Tools/scripts/lll.py.

..

.. bpo: 37170
.. date: 2019-06-06-08-47-04
.. nonce: hO_fpM
.. section: C API

Fix the cast on error in :c:func:`PyLong_AsUnsignedLongLongMask()`.