Описание
Tornado is a Python web framework and asynchronous networking library. Versions 6.5.2 and below use an inefficient algorithm when parsing parameters for HTTP header values, potentially causing a DoS. The _parseparam function in httputil.py is used to parse specific HTTP header values, such as those in multipart/form-data and repeatedly calls string.count() within a nested loop while processing quoted semicolons. If an attacker sends a request with a large number of maliciously crafted parameters in a Content-Disposition header, the server's CPU usage increases quadratically (O(n²)) during parsing. Due to Tornado's single event loop architecture, a single malicious request can cause the entire server to become unresponsive for an extended period. This issue is fixed in version 6.5.3.
A denial of service flaw has been discovered in the Tornado networking library. Affected versions of Tornado us an inefficient algorithm when parsing parameters for HTTP header values, potentially causing a DoS. The _parseparam function in httputil.py is used to parse specific HTTP header values, such as those in multipart/form-data and repeatedly calls string.count() within a nested loop while processing quoted semicolons. If an attacker sends a request with a large number of maliciously crafted parameters in a Content-Disposition header, the server's CPU usage increases quadratically (O(n²)) during parsing. Due to Tornado's single event loop architecture, a single malicious request can cause the entire server to become unresponsive for an extended period.
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 |
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Дополнительная информация
Статус:
EPSS
5.3 Medium
CVSS3
Связанные уязвимости
Tornado is a Python web framework and asynchronous networking library. Versions 6.5.2 and below use an inefficient algorithm when parsing parameters for HTTP header values, potentially causing a DoS. The _parseparam function in httputil.py is used to parse specific HTTP header values, such as those in multipart/form-data and repeatedly calls string.count() within a nested loop while processing quoted semicolons. If an attacker sends a request with a large number of maliciously crafted parameters in a Content-Disposition header, the server's CPU usage increases quadratically (O(n²)) during parsing. Due to Tornado's single event loop architecture, a single malicious request can cause the entire server to become unresponsive for an extended period. This issue is fixed in version 6.5.3.
Tornado is a Python web framework and asynchronous networking library. Versions 6.5.2 and below use an inefficient algorithm when parsing parameters for HTTP header values, potentially causing a DoS. The _parseparam function in httputil.py is used to parse specific HTTP header values, such as those in multipart/form-data and repeatedly calls string.count() within a nested loop while processing quoted semicolons. If an attacker sends a request with a large number of maliciously crafted parameters in a Content-Disposition header, the server's CPU usage increases quadratically (O(n²)) during parsing. Due to Tornado's single event loop architecture, a single malicious request can cause the entire server to become unresponsive for an extended period. This issue is fixed in version 6.5.3.
Tornado is a Python web framework and asynchronous networking library. ...
Уязвимость функции _parseparam компонента httputil.py веб-фреймворка Python Tornado, позволяющая нарушителю вызвать отказ в обслуживании
EPSS
5.3 Medium
CVSS3