GHSA-8w49-h785-mj3c
Tornado has an HTTP cookie parsing DoS vulnerability
At a glance
- Published
- Updated
- CVE
- CVE-2024-52804
- Aliases
- PYSEC-2026-1975
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
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. See also CVE-2024-7592 for a similar vulnerability in cpython.
Affected packages
| Package | Versions |
|---|---|
| PyPI · tornado | introduced 0, fixed 6.4.2 |
References
- https://github.com/tornadoweb/tornado/security/advisories/GHSA-8w49-h785-mj3c WEB
- https://nvd.nist.gov/vuln/detail/CVE-2024-52804 ADVISORY
- https://github.com/tornadoweb/tornado/commit/d5ba4a1695fbf7c6a3e54313262639b198291533 WEB
- https://github.com/tornadoweb/tornado PACKAGE
- https://lists.debian.org/debian-lts-announce/2025/01/msg00000.html WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |