Description

There is a LOW severity vulnerability affecting CPython, specifically the
'http.cookies' standard library module.

When parsing cookies that contained backslashes for quoted characters in
the cookie value, the parser would use an algorithm with quadratic
complexity, resulting in excess CPU resources being used while parsing the
value.

Classification

CVE ID: CVE-2024-7592

Affected Products

Vendor: Python Software Foundation

Product: CPython

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.11% (probability of being exploited)

EPSS Percentile: 45.84% (scored less or equal to compared to others)

EPSS Date: 2025-03-01 (when was this score calculated)

References

https://github.com/python/cpython/pull/123075
https://github.com/python/cpython/issues/123067
https://mail.python.org/archives/list/[email protected]/thread/HXJAAAALNUNGCQUS2W7WR6GFIZIHFOOK/
https://github.com/python/cpython/commit/391e5626e3ee5af267b97e37abc7475732e67621
https://github.com/python/cpython/commit/dcc3eaef98cd94d6cb6cb0f44bd1c903d04f33b1
https://github.com/python/cpython/commit/a77ab24427a18bff817025adb03ca920dc3f1a06
https://github.com/python/cpython/commit/b2f11ca7667e4d57c71c1c88b255115f16042d9a
https://github.com/python/cpython/commit/d4ac921a4b081f7f996a5d2b101684b67ba0ed7f
https://github.com/python/cpython/commit/d662e2db2605515a767f88ad48096b8ac623c774
https://github.com/python/cpython/commit/44e458357fca05ca0ae2658d62c8c595b048b5ef

Timeline