Описание
Denial of Service due to improper input validation vulnerability for HTTP/2 requests in Apache Tomcat. When processing an HTTP/2 request, if the request exceeded any of the configured limits for headers, the associated HTTP/2 stream was not reset until after all of the headers had been processed.This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M16, from 10.1.0-M1 through 10.1.18, from 9.0.0-M1 through 9.0.85, from 8.5.0 through 8.5.98.
Users are recommended to upgrade to version 11.0.0-M17, 10.1.19, 9.0.86 or 8.5.99 which fix the issue.
A vulnerability was found in the Tomcat package due to its handling of HTTP/2 requests. Specifically, when an HTTP/2 request surpasses the predetermined limits for headers configured within the server, the associated HTTP/2 stream isn't reset immediately. Instead, the reset action occurs only after all the headers within the request have been processed. This lapse in resetting the stream exposes the system to potential risks, as it allows malicious actors to exploit the delay in stream reset to carry out various attacks, such as header manipulation or resource exhaustion.
Отчет
This vulnerability presents an Important severity issue due to its potential to facilitate various forms of attack, particularly in the context of HTTP/2 protocol. By delaying the reset of HTTP/2 streams until after processing all headers, malicious actors can exploit this window to execute header manipulation attacks, leading to potential data exfiltration, injection of malicious content, or server resource exhaustion. Furthermore, the delayed reset prolongs the exposure time of vulnerable systems, increasing the likelihood of successful exploitation. In addition, Red Hat Certificate System 10.0 and Red Hat Enterprise Linux 8's Identity Management, are using a vulnerable version of Tomcat that is bundled into the pki-servlet-engine component. However, HTTP/2 is not enabled in such a configuration, and it is not possible to trigger the flaw in a supported setup. See https://access.redhat.com/security/cve/CVE-2020-13934 for context.
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 6 | tomcat6 | Out of support scope | ||
| Red Hat Enterprise Linux 7 | tomcat | Not affected | ||
| Red Hat Enterprise Linux 8 | pki-deps:10.6/pki-servlet-engine | Will not fix | ||
| Red Hat Enterprise Linux 9 | pki-servlet-engine | Will not fix | ||
| JWS 5.7.8 | tomcat | Fixed | RHSA-2024:1319 | 18.03.2024 |
| JWS 6.0.1 | tomcat | Fixed | RHSA-2024:1325 | 18.03.2024 |
| Red Hat Enterprise Linux 8 | tomcat | Fixed | RHSA-2024:3666 | 06.06.2024 |
| Red Hat Enterprise Linux 8.8 Extended Update Support | tomcat | Fixed | RHSA-2024:3814 | 11.06.2024 |
| Red Hat Enterprise Linux 9 | tomcat | Fixed | RHSA-2024:3307 | 23.05.2024 |
| Red Hat Enterprise Linux 9.2 Extended Update Support | tomcat | Fixed | RHSA-2024:3308 | 23.05.2024 |
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Дополнительная информация
Статус:
7.5 High
CVSS3
Связанные уязвимости
Denial of Service due to improper input validation vulnerability for HTTP/2 requests in Apache Tomcat. When processing an HTTP/2 request, if the request exceeded any of the configured limits for headers, the associated HTTP/2 stream was not reset until after all of the headers had been processed.This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M16, from 10.1.0-M1 through 10.1.18, from 9.0.0-M1 through 9.0.85, from 8.5.0 through 8.5.98. Users are recommended to upgrade to version 11.0.0-M17, 10.1.19, 9.0.86 or 8.5.99 which fix the issue.
Denial of Service due to improper input validation vulnerability for HTTP/2 requests in Apache Tomcat. When processing an HTTP/2 request, if the request exceeded any of the configured limits for headers, the associated HTTP/2 stream was not reset until after all of the headers had been processed.This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M16, from 10.1.0-M1 through 10.1.18, from 9.0.0-M1 through 9.0.85, from 8.5.0 through 8.5.98. Users are recommended to upgrade to version 11.0.0-M17, 10.1.19, 9.0.86 or 8.5.99 which fix the issue.
Denial of Service due to improper input validation vulnerability for H ...
Apache Tomcat Denial of Service due to improper input validation vulnerability for HTTP/2 requests
Уязвимость сервера приложений Apache Tomcat, связанная с недостаточной проверкой вводимых данных, позволяющая нарушителю вызвать отказ в обслуживании
7.5 High
CVSS3