- python -m http.server no longer allows terminal control
characters sent within a garbage request to be printed to the
stderr server log.
This is done by changing the http.server
BaseHTTPRequestHandler .log_message method to replace control
characters with a \xHH hex escape before printing.
- Avoid publishing list of active per-interpreter audit hooks
via the gc module
- The IDNA codec decoder used on DNS hostnames by socket or
asyncio related name resolution functions no longer involves
a quadratic algorithm. This prevents a potential CPU denial
of service if an out-of-spec excessive length hostname
involving bidirectional characters were decoded. Some
protocols such as urllib http 3xx redirects potentially allow
for an attacker to supply such a name (CVE-2015-20107).
- Update bundled libexpat to 2.5.0
- Port XKCP’s fix for the buffer overflows in SHA-3
(CVE-2022-37454).
- On Linux the multiprocessing module returns to using
filesystem backed unix domain sockets for communication with
the forkserver process instead of the Linux abstract socket
namespace. Only code that chooses to use the “forkserver”
start method is affected.
Abstract sockets have no permissions and could allow any
user on the system in the same network namespace (often
the whole system) to inject code into the multiprocessing
forkserver process. This was a potential privilege
escalation. Filesystem based socket permissions restrict this
to the forkserver process user as was the default in Python
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python:Factory/python39?expand=0&rev=126
- Fix multiplying a list by an integer (list *= int): detect
the integer overflow when the new allocated length is close
to the maximum size.
- Fix a shell code injection vulnerability in the
get-remote-certificate.py example script. The script no
longer uses a shell to run openssl commands. (originally
filed as CVE-2022-37460, later withdrawn)
- Fix command line parsing: reject -X int_max_str_digits option
with no value (invalid) when the PYTHONINTMAXSTRDIGITS
environment variable is set to a valid limit.
- When ValueError is raised if an integer is larger than the
limit, mention the sys.set_int_max_str_digits() function in
the error message.
- Update bundled libexpat to 2.4.9
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python:Factory/python39?expand=0&rev=118
- (CVE-2020-10735, bsc#1203125). Converting between int
and str in bases other than 2 (binary), 4, 8 (octal), 16
(hexadecimal), or 32 such as base 10 (decimal) now raises a
ValueError if the number of digits in string form is above a
limit to avoid potential denial of service attacks due to the
algorithmic complexity.
This new limit can be configured or disabled by environment
variable, command line flag, or sys APIs. See the integer
string conversion length limitation documentation. The
default limit is 4300 digits in string form.
- Also other bug fixes:
- http.server: Fix an open redirection vulnerability in the
HTTP server when an URI path starts with //. Vulnerability
discovered, and initial fix proposed, by Hamza Avvan.
- Fix contextvars HAMT implementation to handle iteration
over deep trees. The bug was discovered and fixed by Eli
Libman. See MagicStack/immutables#84 for more details.
- Fix binding of unix socket to empty address on Linux to use
an available address from the abstract namespace, instead
of “0”.
- Suppress writing an XML declaration in open files
in ElementTree.write() with encoding='unicode' and
xml_declaration=None.
- Fix the formatting for await x and not x in the operator
precedence table when using the help() system.
- Fix ensurepip environment isolation for subprocess running
pip.
- Fix problem with test_ssl test_get_ciphers on systems that
require perfect forward secrecy (PFS) ciphers.
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python:Factory/python39?expand=0&rev=116
- Core and Builtins
- gh-92311: Fixed a bug where setting frame.f_lineno to jump
over a list comprehension could misbehave or crash.
- gh-92112: Fix crash triggered by an evil custom mro() on
a metaclass.
- gh-92036: Fix a crash in subinterpreters related to the
garbage collector. When a subinterpreter is deleted,
untrack all objects tracked by its GC. To prevent a crash
in deallocator functions expecting objects to be tracked by
the GC, leak a strong reference to these objects on
purpose, so they are never deleted and their deallocator
functions are not called. Patch by Victor Stinner.
- gh-91421: Fix a potential integer overflow in
_Py_DecodeUTF8Ex.
- bpo-46775: Some Windows system error codes(>= 10000) are
now mapped into the correct errno and may now raise
a subclass of OSError. Patch by Dong-hee Na.
- bpo-46962: Classes and functions that unconditionally
declared their docstrings ignoring the
--without-doc-strings compilation flag no longer do so.
- The classes affected are pickle.PickleBuffer,
testcapi.RecursingInfinitelyError, and types.GenericAlias.
- The functions affected are 24 methods in ctypes.
- Patch by Oleg Iarygin.
- bpo-36819: Fix crashes in built-in encoders with error
handlers that return position less or equal than the
starting position of non-encodable characters.
- Library
- gh-91581: utcfromtimestamp() no longer attempts to resolve
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python:Factory/python39?expand=0&rev=98
- bpo-46968: Check for the existence of the “sys/auxv.h” header
in faulthandler to avoid compilation problems in systems
where this header doesn’t exist. Patch by Pablo Galindo
- bpo-47101: hashlib.algorithms_available now lists only
algorithms that are provided by activated crypto providers on
OpenSSL 3.0. Legacy algorithms are not listed unless the
legacy provider has been loaded into the default OSSL
context.
- bpo-23691: Protect the re.finditer() iterator from
re-entering.
- bpo-42369: Fix thread safety of zipfile._SharedFile.tell() to
avoid a “zipfile.BadZipFile: Bad CRC-32 for file” exception
when reading a ZipFile from multiple threads.
- bpo-38256: Fix binascii.crc32() when it is compiled to use
zlib’c crc32 to work properly on inputs 4+GiB in length
instead of returning the wrong result. The workaround prior
to this was to always feed the function data in increments
smaller than 4GiB or to just call the zlib module function.
- bpo-39394: A warning about inline flags not at the start of
the regular expression now contains the position of the flag.
- bpo-47061: Deprecate the various modules listed by PEP 594:
- aifc, asynchat, asyncore, audioop, cgi, cgitb, chunk, crypt,
imghdr, msilib, nntplib, nis, ossaudiodev, pipes, smtpd,
sndhdr, spwd, sunau, telnetlib, uu, xdrlib
- bpo-2604: Fix bug where doctests using globals would fail
when run multiple times.
- bpo-45997: Fix asyncio.Semaphore re-aquiring FIFO order.
- bpo-47022: The asynchat, asyncore and smtpd modules have been
deprecated since at least Python 3.6. Their documentation has
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python:Factory/python39?expand=0&rev=96
* Core and Builtins
+ bpo-30570: Fixed a crash in issubclass() from infinite recursion when searching pathological __bases__ tuples.
+ bpo-45494: Fix parser crash when reporting errors involving invalid continuation characters. Patch by Pablo Galindo.
+ bpo-45385: Fix reference leak from descr_check. Patch by Dong-hee Na.
+ bpo-45167: Fix deepcopying of types.GenericAlias objects.
+ bpo-44219: Release the GIL while performing isatty system calls on arbitrary file descriptors. In particular, this affects os.isatty(), os.device_encoding() and io.TextIOWrapper. By extension, io.open() in text mode is also affected. This change solves a deadlock in os.isatty(). Patch by Vincent Michel in bpo-44219.
+ bpo-44959: Added fallback to extension modules with ‘.sl’ suffix on HP-UX
+ bpo-44050: Extensions that indicate they use global state (by setting m_size to -1) can again be used in multiple interpreters. This reverts to behavior of Python 3.8.
+ bpo-45121: Fix issue where Protocol.__init__ raises RecursionError when it’s called directly or via super(). Patch provided by Yurii Karabas.
+ bpo-45083: When the interpreter renders an exception, its name now has a complete qualname. Previously only the class name was concatenated to the module name, which sometimes resulted in an incorrect full name being displayed.
+ bpo-45738: Fix computation of error location for invalid continuation characters in the parser. Patch by Pablo Galindo.
+ Library
+ bpo-45678: Fix bug in Python 3.9 that meant functools.singledispatchmethod failed to properly wrap the attributes of the target method. Patch by Alex Waygood.
+ bpo-45679: Fix caching of multi-value typing.Literal. Literal[True, 2] is no longer equal to Literal[1, 2].
+ bpo-45438: Fix typing.Signature string representation for generic builtin types.
+ bpo-45581: sqlite3.connect() now correctly raises MemoryError if the underlying SQLite API signals memory error. Patch by Erlend E. Aasland.
+ bpo-39679: Fix bug in functools.singledispatchmethod that caused it to fail when attempting to register a classmethod() or staticmethod() using type annotations. Patch contributed by Alex Waygood.
+ bpo-45515: Add references to zoneinfo in the datetime documentation, mostly replacing outdated references to dateutil.tz. Change by Paul Ganssle.
+ bpo-45467: Fix incremental decoder and stream reader in the “raw-unicode-escape” codec. Previously they failed if the escape sequence was split.
+ bpo-45461: Fix incremental decoder and stream reader in the “unicode-escape” codec. Previously they failed if the escape sequence was split.
+ bpo-45239: Fixed email.utils.parsedate_tz() crashing with UnboundLocalError on certain invalid input instead of returning None. Patch by Ben Hoyt.
+ bpo-44904: Fix bug in the doctest module that caused it to fail if a docstring included an example with a classmethod property. Patch by Alex Waygood.
+ bpo-45406: Make inspect.getmodule() catch FileNotFoundError raised by :’func:inspect.getabsfile, and return None to indicate that the module could not be determined.
+ bpo-45262: Prevent use-after-free in asyncio. Make sure the cached running loop holder gets cleared on dealloc to prevent use-after-free in get_running_loop
+ bpo-45386: Make xmlrpc.client more robust to C runtimes where the underlying C strftime function results in a ValueError when testing for year formatting options.
+ bpo-45371: Fix clang rpath issue in distutils. The UnixCCompiler now uses correct clang option to add a runtime library directory (rpath) to a shared library.
+ bpo-20028: Improve error message of csv.Dialect when initializing. Patch by Vajrasky Kok and Dong-hee Na.
+ bpo-45343: Update bundled pip to 21.2.4 and setuptools to 58.1.0
+ bpo-41710: On Unix, if the sem_clockwait() function is available in the C library (glibc 2.30 and newer), the threading.Lock.acquire() method now uses the monotonic clock (time.CLOCK_MONOTONIC) for the timeout, rather than using the system clock (time.CLOCK_REALTIME), to not be affected by system clock changes. Patch by Victor Stinner.
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python:Factory/python39?expand=0&rev=87
- Security
- Replaced usage of tempfile.mktemp() with TemporaryDirectory
to avoid a potential race condition.
- Add auditing events to the marshal module, and stop raising
code.__init__ events for every unmarshalled code object.
Directly instantiated code objects will continue to raise
an event, and audit event handlers should inspect or
collect the raw marshal data. This reduces a significant
performance overhead when loading from .pyc files.
- Made the internal putcmd function in smtplib sanitize input
for presence of \r and \n characters to avoid (unlikely)
command injection.
- Core and Builtins
- Fixed pickling of range iterators that iterated for over
2**32 times.
- Fix a race in WeakKeyDictionary, WeakValueDictionary and
WeakSet when two threads attempt to commit the last pending
removal. This fixes asyncio.create_task and fixes a data
loss in asyncio.run where shutdown_asyncgens is not run
- Fixed a corner case bug where the result of
float.fromhex('0x.8p-1074') was rounded the wrong way.
- Refine the syntax error for trailing commas in import
statements. Patch by Pablo Galindo.
- Restore behaviour of complex exponentiation with
integer-valued exponent of type float or complex.
- Correct the ast locations of f-strings with format specs
and repeated expressions. Patch by Pablo Galindo
- Use new trashcan macros (Py_TRASHCAN_BEGIN/END) in
frameobject.c instead of the old ones
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python:Factory/python39?expand=0&rev=83
- Update to 3.9.6:
* Security
- bpo-44022: mod:http.client now avoids infinitely reading
potential HTTP headers after a 100 Continue status response
from the server.
* Core and Builtins
- bpo-44409: Fix error location information for tokenizer
errors raised on initialization of the tokenizer. Patch by
Pablo Galindo.
- bpo-43667: Improve Unicode support in non-UTF locales on
Oracle Solaris. This issue does not affect other Solaris
systems.
- bpo-44168: Fix error message in the parser involving keyword
arguments with invalid expressions. Patch by Pablo Galindo
- bpo-44114: Fix incorrect dictkeys_reversed and
dictitems_reversed function signatures in C code, which broke
webassembly builds.
- bpo-44070: No longer eagerly makes import filenames absolute,
except for extension modules, which was introduced in 3.9.5.
- bpo-28146: Fix a confusing error message in str.format().
- bpo-11105: When compiling ast.AST objects with recursive
references through compile(), the interpreter doesn’t crash
anymore instead it raises a RecursionError.
* Library
- bpo-44516: Update vendored pip to 21.1.3
- bpo-44482: Fix very unlikely resource leak in glob in
alternate Python implementations.
- bpo-44439: Fix in bz2.BZ2File.write() / lzma.LZMAFile.write()
methods, when the input data is an object that supports the
buffer protocol, the file length may be wrong.
OBS-URL: https://build.opensuse.org/request/show/910899
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python:Factory/python39?expand=0&rev=76
