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mirror of https://github.com/python/cpython synced 2024-07-05 14:53:35 +00:00
cpython/Parser
Gregory P. Smith 511ca94520
gh-95778: CVE-2020-10735: Prevent DoS by very large int() (#96499)
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.

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#). Much of that text wound up in the Issue. Backports PRs already exist. See the issue for links.
2022-09-02 09:35:08 -07:00
..
action_helpers.c bpo-47212: Improve error messages for un-parenthesized generator expressions (GH-32302) 2022-04-05 14:47:13 +01:00
asdl_c.py gh-95185: Check recursion depth in the AST constructor (#95186) 2022-07-24 15:58:52 +01:00
asdl.py
myreadline.c gh-93937: PyOS_StdioReadline() uses PyConfig.legacy_windows_stdio (#94024) 2022-06-20 16:10:47 +02:00
parser.c gh-94996: Disallow lambda pos only params with feature_version < (3, 8) (GH-95934) 2022-08-12 20:41:02 +02:00
peg_api.c
pegen_errors.c gh-95876: Fix format string in pegen error location code (#95877) 2022-08-11 09:55:57 +01:00
pegen.c gh-95778: CVE-2020-10735: Prevent DoS by very large int() (#96499) 2022-09-02 09:35:08 -07:00
pegen.h gh-93103: Parser uses PyConfig.parser_debug instead of Py_DebugFlag (#93106) 2022-05-24 22:35:08 +02:00
Python.asdl bpo-46289: Make conversion of FormattedValue not optional on ASDL (GH-30467) 2022-01-07 13:05:28 -08:00
string_parser.c gh-94869: Fix the location in some expressions for multi-line f-string ast nodes (#94895) 2022-07-16 19:51:53 +01:00
string_parser.h
token.c gh-92651: Remove the Include/token.h header file (#92652) 2022-05-11 23:22:50 +02:00
tokenizer.c gh-94360: Fix a tokenizer crash when reading encoded files with syntax errors from stdin (#94386) 2022-07-05 17:39:21 +01:00
tokenizer.h gh-93103: Parser uses PyConfig.parser_debug instead of Py_DebugFlag (#93106) 2022-05-24 22:35:08 +02:00