Описание
The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.14 and 8.5.0 to 8.5.37 accepted streams with excessive numbers of SETTINGS frames and also permitted clients to keep streams open without reading/writing request/response data. By keeping streams open for requests that utilised the Servlet API's blocking I/O, clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.
A flaw was found in Apache Tomcat, where the HTTP/2 implementation accepted streams with excessive numbers of SETTINGS frames and also permitted clients to keep streams open, which enables them to cause server-side threads to block. This flaw eventually leads to a denial of service attack.
Отчет
pki-servlet-container does not use HTTP/2 in its default configuration.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat BPM Suite 6 | tomcat | Not affected | ||
| Red Hat Enterprise Linux 6 | tomcat6 | Not affected | ||
| Red Hat Enterprise Linux 7 | tomcat | Not affected | ||
| Red Hat Enterprise Linux 8 | pki-deps:10.6/pki-servlet-container | Will not fix | ||
| Red Hat Fuse 7 | tomcat | Not affected | ||
| Red Hat JBoss BRMS 5 | jbossweb | Not affected | ||
| Red Hat JBoss BRMS 6 | tomcat | Not affected | ||
| Red Hat JBoss Data Grid 6 | jbossweb | Not affected | ||
| Red Hat JBoss Data Grid 7 | tomcat | Not affected | ||
| Red Hat JBoss Data Virtualization 6 | jbossweb | Not affected |
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Дополнительная информация
Статус:
EPSS
7.5 High
CVSS3
Связанные уязвимости
The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.14 and 8.5.0 to 8.5.37 accepted streams with excessive numbers of SETTINGS frames and also permitted clients to keep streams open without reading/writing request/response data. By keeping streams open for requests that utilised the Servlet API's blocking I/O, clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.
The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.14 and 8.5.0 to 8.5.37 accepted streams with excessive numbers of SETTINGS frames and also permitted clients to keep streams open without reading/writing request/response data. By keeping streams open for requests that utilised the Servlet API's blocking I/O, clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.
The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.14 and 8.5. ...
EPSS
7.5 High
CVSS3