Riskcovery

CVE-2024-52804

Tornado has HTTP cookie parsing DoS vulnerability

State
Published
Severity
7.5 High
Published
Nov 22, 2024
Updated
Nov 3, 2025
Reserved
Nov 15, 2024

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HGitHub_M

Weaknesses

  • CWE-400 Uncontrolled Resource Consumption
  • CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

ProductVersions
tornadotornadoweb
  • < 6.4.2Affected

References

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