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There were no changes between 3. 33001: Minimal fix to prevent buffer overrun in os. 32981: Regexes in difflib and poplib were vulnerable to catastrophic backtracking. There were no new changes in version 3. 30947: Upgrade libexpat embedded copy from version 2. 32072: Fixed issues with binary plists: Fixed saving bytearrays.
Identical objects will be saved only once. Equal references will be load as identical objects. Added support for saving and loading recursive data structures. 31170: expat: Update libexpat from 2. 29572: Update Windows build and OS X installers to use OpenSSL 1. 29591: Update expat copy from 2. 0 to get fixes of CVE-2016-0718 and CVE-2016-4472.
30694: Upgrade expat copy from 2. 26657: Fix directory traversal vulnerability with http. This fixes a regression that was introduced in 3. Based on patch by Philipp Hagemeister.
30730: Prevent environment variables injection in subprocess on Windows. Prevent passing other invalid environment variables and command arguments. 26617: Fix crash when GC runs during weakref callbacks. 27945: Fixed various segfaults with dict when input collections are mutated during searching, inserting or comparing. Based on patches by Duane Griffin and Tim Mitchell. Mac OS X when decode astral characters.
28563: Fixed possible DoS and arbitrary code execution when handle plural form selections in the gettext module. The expression parser now supports exact syntax supported by GNU gettext. In the curses module, raise an error if window. 27783: Fix possible usage of uninitialized memory in operator. 27774: Fix possible Py_DECREF on unowned object in _sre. 27760: Fix possible integer overflow in binascii.
27758: Fix possible integer overflow in the _csv module for large record lengths. Ignore the HTTP_PROXY variable when REQUEST_METHOD environment is set, which indicates that the script is in CGI mode. 27759: Fix selectors incorrectly retain invalid file descriptors. 28248: Update Windows build to use OpenSSL 1.
27369: In test_pyexpat, avoid testing an error message detail that changed in Expat 2. 26478: Fix semantic bugs when using binary operators with dictionary views and tuples. 26171: Fix possible integer overflow and heap corruption in zipimporter. Fix TLS stripping vulnerability in smptlib, CVE-2016-0772.
25939: On Windows open the cert store readonly in ssl. Skip getaddrinfo if host is already resolved. 25940: Changed test_ssl to use self-signed. 25709: Fixed problem with in-place string concatenation and utf-8 cache. 24731: Fixed crash on converting objects with special methods __bytes__, __trunc__, and __float__ returning instances of subclasses of bytes, int, and float to subclasses of bytes, int, and float correspondingly. 25388: Fixed tokenizer crash when processing undecodable source code with a null byte.
22995: Default implementation of __reduce__ and __reduce_ex__ now rejects builtin types with not defined __new__. These objects are not necessarily terminated by a null byte, but the functions assumed they were. 24806: Prevent builtin types that are not allowed to be subclassed from being subclassed through multiple inheritance. 24848: Fixed a number of bugs in UTF-7 decoding of misformed data. These attributes are now set to None if the creation of the object failed, instead of raising an OSError exception. Initial patch written by Marco Paolini.
21167: NAN operations are now handled correctly when python is compiled with ICC even if -fp-model strict is not specified. 4395: Better testing and documentation of binary operators. 24467: Fixed possible buffer over-read in bytearray. The bytearray object now always allocates place for trailing null byte and it’s buffer now is always null-terminated.