CVE Vulnerabilities

CVE-2024-52804

Uncontrolled Resource Consumption

Published: Nov 22, 2024 | Modified: Aug 27, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
7.5 IMPORTANT
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM

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.

Weakness

The product does not properly control the allocation and maintenance of a limited resource.

Affected Software

Name Vendor Start Version End Version
Tornado Tornadoweb * 6.4.2 (excluding)
Red Hat Enterprise Linux 8 RedHat pcs-0:0.10.18-2.el8_10.4 *
Red Hat Enterprise Linux 8.4 Telecommunications Update Service RedHat pcs-0:0.10.8-1.el8_4.6 *
Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions RedHat pcs-0:0.10.8-1.el8_4.6 *
Red Hat Enterprise Linux 8.6 Telecommunications Update Service RedHat pcs-0:0.10.12-6.el8_6.7 *
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions RedHat pcs-0:0.10.12-6.el8_6.7 *
Red Hat Enterprise Linux 8.8 Extended Update Support RedHat pcs-0:0.10.15-4.el8_8.4 *
Red Hat Enterprise Linux 9 RedHat python-tornado-0:6.4.2-1.el9_5 *
Red Hat Enterprise Linux 9 RedHat pcs-0:0.11.8-1.el9_5.2 *
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions RedHat pcs-0:0.11.1-10.el9_0.7 *
Red Hat Enterprise Linux 9.2 Extended Update Support RedHat python-tornado-0:6.4.2-1.el9_2 *
Red Hat Enterprise Linux 9.2 Extended Update Support RedHat pcs-0:0.11.4-7.el9_2.4 *
Red Hat Enterprise Linux 9.4 Extended Update Support RedHat python-tornado-0:6.4.2-1.el9_4 *
Red Hat Enterprise Linux 9.4 Extended Update Support RedHat pcs-0:0.11.7-2.el9_4.3 *
Python-tornado Ubuntu devel *
Python-tornado Ubuntu esm-apps/bionic *
Python-tornado Ubuntu esm-apps/focal *
Python-tornado Ubuntu esm-apps/jammy *
Python-tornado Ubuntu focal *
Python-tornado Ubuntu jammy *
Python-tornado Ubuntu noble *
Python-tornado Ubuntu oracular *
Python-tornado Ubuntu plucky *
Python-tornado Ubuntu upstream *

Potential Mitigations

  • Mitigation of resource exhaustion attacks requires that the target system either:

  • The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.

  • The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.

References