Описание
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.
A flaw was found in Tornado's HTTP cookie parsing algorithm. This vulnerability allows excessive CPU consumption via maliciously crafted cookie headers due to Quadratic complexity, potentially blocking the processing of other requests and leading to the loss of availability of the system.
Меры по смягчению последствий
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | pcs | Not affected | ||
| Red Hat Enterprise Linux 7 | python-tornado | Out of support scope | ||
| Red Hat OpenShift Container Platform 4 | python-tornado | Not affected | ||
| Red Hat Enterprise Linux 8 | pcs | Fixed | RHSA-2025:2872 | 17.03.2025 |
| Red Hat Enterprise Linux 8.4 Telecommunications Update Service | pcs | Fixed | RHSA-2025:2955 | 17.03.2025 |
| Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions | pcs | Fixed | RHSA-2025:2955 | 17.03.2025 |
| Red Hat Enterprise Linux 8.6 Telecommunications Update Service | pcs | Fixed | RHSA-2025:2956 | 17.03.2025 |
| Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions | pcs | Fixed | RHSA-2025:2956 | 17.03.2025 |
| Red Hat Enterprise Linux 8.8 Extended Update Support | pcs | Fixed | RHSA-2025:3109 | 24.03.2025 |
| Red Hat Enterprise Linux 9 | python-tornado | Fixed | RHSA-2024:10590 | 02.12.2024 |
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Дополнительная информация
Статус:
EPSS
7.5 High
CVSS3
Связанные уязвимости
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.
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.
Tornado is a Python web framework and asynchronous networking library. ...
EPSS
7.5 High
CVSS3