Описание
Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, a single maliciously crafted HTTP request can block the server's event loop for an extended period, caused by the HTTPHeaders.add method. The function accumulates values using string concatenation when the same header name is repeated, causing a Denial of Service (DoS). Due to Python string immutability, each concatenation copies the entire string, resulting in O(n²) time complexity. The severity can vary from high if max_header_size has been increased from its default, to low if it has its default value of 64KB. This issue is fixed in version 6.5.3.
A denial of service flaw has been discovered in the Tornado networking library. In Tornado, a single maliciously crafted HTTP request can block the server's event loop for an extended period, caused by the HTTPHeaders.add method. The function accumulates values using string concatenation when the same header name is repeated, causing a Denial of Service (DoS). Due to Python string immutability, each concatenation copies the entire string, resulting in O(n²) time complexity.
Отчет
The availability impact of this flaw is partially mitigated on Red Hat products as the host systems are not at risk.
Меры по смягчению последствий
Mitigation for this issue is either not available or the currently available options do not 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 |
|---|---|---|---|---|
| External Secrets Operator for Red Hat OpenShift | external-secrets-operator/bitwarden-sdk-server-rhel9 | Not affected | ||
| External Secrets Operator for Red Hat OpenShift | external-secrets-operator/external-secrets-operator-bundle | Not affected | ||
| External Secrets Operator for Red Hat OpenShift | external-secrets-operator/external-secrets-operator-rhel9 | Not affected | ||
| External Secrets Operator for Red Hat OpenShift | external-secrets-operator/external-secrets-rhel9 | Not affected | ||
| external secrets operator for Red Hat OpenShift - Tech Preview | external-secrets-operator/bitwarden-sdk-server-rhel9 | Will not fix | ||
| external secrets operator for Red Hat OpenShift - Tech Preview | external-secrets-operator/external-secrets-operator-bundle | Will not fix | ||
| external secrets operator for Red Hat OpenShift - Tech Preview | external-secrets-operator/external-secrets-operator-rhel9 | Will not fix | ||
| external secrets operator for Red Hat OpenShift - Tech Preview | external-secrets-operator/external-secrets-rhel9 | Will not fix | ||
| OpenShift Service Mesh 2 | openshift-service-mesh/grafana-rhel8 | Not affected | ||
| OpenShift Service Mesh 2 | openshift-service-mesh/istio-cni-rhel8 | Not affected |
Показывать по
Ссылки на источники
Дополнительная информация
Статус:
EPSS
5.3 Medium
CVSS3
Связанные уязвимости
Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, a single maliciously crafted HTTP request can block the server's event loop for an extended period, caused by the HTTPHeaders.add method. The function accumulates values using string concatenation when the same header name is repeated, causing a Denial of Service (DoS). Due to Python string immutability, each concatenation copies the entire string, resulting in O(n²) time complexity. The severity can vary from high if max_header_size has been increased from its default, to low if it has its default value of 64KB. This issue is fixed in version 6.5.3.
Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, a single maliciously crafted HTTP request can block the server's event loop for an extended period, caused by the HTTPHeaders.add method. The function accumulates values using string concatenation when the same header name is repeated, causing a Denial of Service (DoS). Due to Python string immutability, each concatenation copies the entire string, resulting in O(n²) time complexity. The severity can vary from high if max_header_size has been increased from its default, to low if it has its default value of 64KB. This issue is fixed in version 6.5.3.
Tornado is a Python web framework and asynchronous networking library. ...
EPSS
5.3 Medium
CVSS3