CVE-2024-52804

Publication date 22 November 2024

Last updated 30 May 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

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.

Status

Package Ubuntu Release Status
python-tornado 25.04 plucky
Fixed 6.4.2-1
24.10 oracular
Fixed 6.4.1-2ubuntu0.1
24.04 LTS noble
Fixed 6.4.0-1ubuntu0.1
22.04 LTS jammy
Fixed 6.1.0-3ubuntu0.1~esm1
20.04 LTS focal
Fixed 6.0.3+really5.1.1-3ubuntu0.1~esm1
18.04 LTS bionic
Fixed 4.5.3-1ubuntu0.2+esm1
16.04 LTS xenial
Not affected

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
python-tornado

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H