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CVE-2024-52804

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Date: November 22, 2024

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.

Language: Python

Severity Score

Related Resources (6)

https://github.com/advisories/GHSA-7pwv-g7hj-39pr
https://nvd.nist.gov/vuln/detail/CVE-2024-52804
https://github.com/tornadoweb/tornado/commit/d5ba4a1695fbf7c6a3e54313262639b198291533
https://github.com/tornadoweb/tornado
https://github.com/tornadoweb/tornado/security/advisories/GHSA-8w49-h785-mj3c
https://www.mend.io/vulnerability-database/CVE-2024-52804

Severity Score

Weakness Type (CWE)

Uncontrolled Resource Consumption ('Resource Exhaustion')

CWE-400

Allocation of Resources Without Limits or Throttling

CWE-770

Top Fix

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Upgrade Version

Upgrade to version tornado - 6.4.2

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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