CVE-2024-52804 Information

Description

Tornado is a Python web framework and asynchronous networking library. The algorithm used for parsing HTTP cookies in Tornado versions prior to 6.4.2 sometimes has quadratic complexity leading to excessive CPU consumption when parsing maliciously-crafted cookie headers. This parsing occurs in the event loop thread and may block the processing of other requests. Version 6.4.2 fixes the issue.

Reference

https://github.com/advisories/GHSA-7pwv-g7hj-39pr https://github.com/tornadoweb/tornado/commit/d5ba4a1695fbf7c6a3e54313262639b198291533 https://github.com/tornadoweb/tornado/security/advisories/GHSA-8w49-h785-mj3c