GHSA-8w49-h785-mj3c: Tornado has an HTTP cookie parsing DoS vulnerability

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1. GitHub Advisory Database
2. GitHub Reviewed
3. CVE-2024-52804

Tornado has an HTTP cookie parsing DoS vulnerability

High severity GitHub Reviewed Published Nov 22, 2024 in tornadoweb/tornado

Package

pip tornado (pip)

Affected versions

<= 6.4.1

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.

References

• GHSA-8w49-h785-mj3c

Published to the GitHub Advisory Database

Nov 22, 2024