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Gregory P. Smith 8f0fa4bd10
[3.10] gh-95778: CVE-2020-10735: Prevent DoS by very large int() (#96501) 
Integer to and from text conversions via CPython's bignum `int` type is not safe against denial of service attacks due to malicious input. Very large input strings with hundred thousands of digits can consume several CPU seconds.

This PR comes fresh from a pile of work done in our private PSRT security response team repo.

This backports https://github.com/python/cpython/pull/96499 aka 511ca94520

Signed-off-by: Christian Heimes [Red Hat] <christian@python.org>
Tons-of-polishing-up-by: Gregory P. Smith [Google] <greg@krypto.org>
Reviews via the private PSRT repo via many others (see the NEWS entry in the PR).

<!-- gh-issue-number: gh-95778 -->
* Issue: gh-95778
<!-- /gh-issue-number -->

I wrote up [a one pager for the release managers](https://docs.google.com/document/d/1KjuF_aXlzPUxTK4BMgezGJ2Pn7uevfX7g0_mvgHlL7Y/edit#).
2022-09-02 09:51:49 -07:00
..
pycore_abstract.h bpo-40170: Add _PyIndex_Check() internal function (GH-19426) 2020-04-08 02:01:56 +02:00
pycore_accu.h bpo-36635: Change pyport.h for Py_BUILD_CORE_MODULE define (GH-12853) 2019-04-17 23:02:26 +02:00
pycore_asdl.h bpo-43244: Remove the pyarena.h header (GH-25007) 2021-03-24 02:23:01 +01:00
pycore_ast.h bpo-43892: Make match patterns explicit in the AST (GH-25585) 2021-04-28 22:58:44 -07:00
pycore_ast_state.h bpo-43892: Make match patterns explicit in the AST (GH-25585) 2021-04-28 22:58:44 -07:00
pycore_atomic.h Fix typo in internal/pycore_atomic.h (GH-95939) 2022-08-12 21:05:37 -07:00
pycore_atomic_funcs.h bpo-39465: Add pycore_atomic_funcs.h header (GH-20766) 2020-12-23 03:41:08 +01:00
pycore_bitutils.h bpo-41617: Add _Py__has_builtin() macro (GH-23260) 2020-11-13 15:38:17 +01:00
pycore_blocks_output_buffer.h bpo-44458: Ensure BUFFER_BLOCK_SIZE symbol is statically allocated. (GH-26808) (GH-26844) 2021-06-22 00:10:23 -07:00
pycore_bytes_methods.h bpo-35081: Move bytes_methods.h to the internal C API (GH-18492) 2020-02-12 22:32:34 +01:00
pycore_call.h bpo-38644: Add _PyObject_Call() (GH-17089) 2019-11-14 13:36:21 +01:00
pycore_ceval.h bpo-37146: Move _PyEval_DeactivateOpCache() to the internal C API (GH-24786) 2021-03-08 22:56:37 +01:00
pycore_code.h [3.10] Remove trailing spaces (GH-28709) 2021-10-03 20:03:49 +03:00
pycore_compile.h bpo-42609: Check recursion depth in the AST validator and optimizer (GH-23744) 2021-04-25 13:38:00 +03:00
pycore_condvar.h bpo-36635: Change pyport.h for Py_BUILD_CORE_MODULE define (GH-12853) 2019-04-17 23:02:26 +02:00
pycore_context.h bpo-43268: Pass interp rather than tstate to internal functions (GH-24580) 2021-02-19 15:10:45 +01:00
pycore_dtoa.h Revert "bpo-40521: Make dtoa bigint free list per-interpreter (GH-24821)" (GH-24964) 2021-03-22 11:58:59 +01:00
pycore_fileutils.h bpo-43667: Fix broken Unicode encoding in non-UTF locales on Solaris (GH-25096) 2021-04-30 15:21:42 +02:00
pycore_format.h bpo-42431: Fix outdated bytes comments (GH-23458) 2020-12-03 12:46:16 +02:00
pycore_gc.h bpo-43268: Pass interp rather than tstate to internal functions (GH-24580) 2021-02-19 15:10:45 +01:00
pycore_getopt.h bpo-36763: Cleanup precmdline in _PyCoreConfig_Read() (GH-13371) 2019-05-17 03:15:12 +02:00
pycore_gil.h bpo-38353: Cleanup includes in the internal C API (GH-16548) 2019-10-02 23:51:20 +02:00
pycore_hamt.h gh-93065: Fix HAMT to iterate correctly over 7-level deep trees (GH-93066) (GH-93146) 2022-05-24 10:52:29 +02:00
pycore_hashtable.h bpo-40602: Write unit tests for _Py_hashtable_t (GH-20091) 2020-05-14 21:55:47 +02:00
pycore_import.h bpo-41994: Fix refcount issues in Python/import.c (GH-22632) 2021-01-12 15:43:32 +01:00
pycore_initconfig.h [3.10] gh-95778: CVE-2020-10735: Prevent DoS by very large int() (#96501) 2022-09-02 09:51:49 -07:00
pycore_interp.h [3.10] gh-95778: CVE-2020-10735: Prevent DoS by very large int() (#96501) 2022-09-02 09:51:49 -07:00
pycore_list.h bpo-41078: Add pycore_list.h internal header file (GH-21057) 2020-06-22 17:39:32 +02:00
pycore_long.h [3.10] gh-95778: CVE-2020-10735: Prevent DoS by very large int() (#96501) 2022-09-02 09:51:49 -07:00
pycore_moduleobject.h bpo-40137: Add pycore_moduleobject.h internal header (GH-25507) 2021-04-22 00:52:52 +02:00
pycore_object.h [3.10] [codemod] Fix non-matching bracket pairs (GH-28473) (GH-28511) 2021-09-22 01:33:59 +02:00
pycore_parser.h bpo-43244: Remove parser_interface.h header file (GH-25001) 2021-03-24 01:29:09 +01:00
pycore_pathconfig.h bpo-29778: test_embed tests the path configuration (GH-21306) 2020-07-08 00:20:37 +02:00
pycore_pyarena.h bpo-43244: Remove the pyarena.h header (GH-25007) 2021-03-24 02:23:01 +01:00
pycore_pyerrors.h bpo-38530: Refactor and improve AttributeError suggestions (GH-25776) 2021-05-03 16:47:27 +01:00
pycore_pyhash.h bpo-36635: Change pyport.h for Py_BUILD_CORE_MODULE define (GH-12853) 2019-04-17 23:02:26 +02:00
pycore_pylifecycle.h bpo-43687: Py_Initialize() creates singletons earlier (GH-25147) 2021-04-02 15:28:13 +02:00
pycore_pymem.h bpo-44184: Fix subtype_dealloc() for freed type (GH-26274) (GH-26290) 2021-05-22 00:50:11 +02:00
pycore_pystate.h bpo-43268: _Py_IsMainInterpreter() now expects interp (GH-24577) 2021-02-19 13:33:31 +01:00
pycore_runtime.h bpo-42882: _PyRuntimeState_Init() leaves unicode next_index unchanged (GH-24193) 2021-01-12 10:29:45 +01:00
pycore_structseq.h bpo-43916: Move the _PyStructSequence_InitType function to the internal API (GH-25854) 2021-05-03 15:50:24 +01:00
pycore_symtable.h bpo-46042: Improve SyntaxError locations in the symbol table (GH-30059) (GH-30064) 2021-12-12 01:24:12 +00:00
pycore_sysmodule.h bpo-38644: Add _PySys_Audit() which takes tstate (GH-19180) 2020-03-26 18:57:32 +01:00
pycore_traceback.h [3.10] Fix typos in the Include directory (GH-28745) (GH-28789) 2021-10-07 06:00:23 -07:00
pycore_tuple.h bpo-41078: Rename pycore_tupleobject.h to pycore_tuple.h (GH-21056) 2020-06-22 17:27:35 +02:00
pycore_ucnhash.h bpo-42157: Rename unicodedata.ucnhash_CAPI (GH-22994) 2020-10-27 04:36:22 +01:00
pycore_unionobject.h [3.10] bpo-44654: Do not export the union type related symbols (GH-27223). (GH-27225) 2021-07-18 18:37:41 +03:00
pycore_warnings.h bpo-43268: Pass interp rather than tstate to internal functions (GH-24580) 2021-02-19 15:10:45 +01:00