Описание
Improper Resource Shutdown or Release vulnerability in Apache Tomcat made Tomcat vulnerable to the made you reset attack.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.9, from 10.1.0-M1 through 10.1.43 and from 9.0.0.M1 through 9.0.107. Older, EOL versions may also be affected.
Users are recommended to upgrade to one of versions 11.0.10, 10.1.44 or 9.0.108 which fix the issue.
A flaw was found in Apache Tomcat where malformed client requests can trigger server-side stream resets without triggering abuse counters. This issue, referred to as the "MadeYouReset" attack, allows malicious clients to induce excessive server workload by repeatedly causing server-side stream aborts. While not a protocol bug, this highlights a common implementation weakness that can be exploited to cause a denial of service (DoS).
Отчет
This vulnerability is rated with an Important severity. It is simple to exploit because it does not require authentication and could result in a Denial of Service (DoS). While some DoS flaws are classified as Moderate, “MadeYouReset” is Important because of the limited barriers (no specialized tooling or advanced scripting) to exploitation which directly impacts service availability. The vulnerability arises from an implementation weakness in HTTP/2 stream reset handling — malformed client requests can trigger server-side resets without incrementing abuse counters, allowing an attacker to bypass built-in request throttling and overhead limits. Since these resets consume CPU and memory resources and can be generated at scale over a single TCP/TLS connection, a remote attacker could exhaust server capacity quickly, impacting all legitimate clients.
Меры по смягчению последствий
No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| 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-engine | Not affected | ||
| Red Hat Enterprise Linux 9 | pki-servlet-engine | Affected | ||
| Red Hat JBoss Web Server 5 | tomcat | Will not fix | ||
| Red Hat Enterprise Linux 10 | tomcat9 | Fixed | RHSA-2025:14178 | 20.08.2025 |
| Red Hat Enterprise Linux 10 | tomcat | Fixed | RHSA-2025:14179 | 20.08.2025 |
| Red Hat Enterprise Linux 8 | tomcat | Fixed | RHSA-2025:14177 | 20.08.2025 |
| Red Hat Enterprise Linux 8.8 Telecommunications Update Service | tomcat | Fixed | RHSA-2025:14182 | 20.08.2025 |
| Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | tomcat | Fixed | RHSA-2025:14182 | 20.08.2025 |
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Дополнительная информация
Статус:
EPSS
7.5 High
CVSS3
Связанные уязвимости
Improper Resource Shutdown or Release vulnerability in Apache Tomcat made Tomcat vulnerable to the made you reset attack. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.9, from 10.1.0-M1 through 10.1.43 and from 9.0.0.M1 through 9.0.107. Older, EOL versions may also be affected. Users are recommended to upgrade to one of versions 11.0.10, 10.1.44 or 9.0.108 which fix the issue.
Improper Resource Shutdown or Release vulnerability in Apache Tomcat made Tomcat vulnerable to the made you reset attack. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.9, from 10.1.0-M1 through 10.1.43 and from 9.0.0.M1 through 9.0.107. Older, EOL versions may also be affected. Users are recommended to upgrade to one of versions 11.0.10, 10.1.44 or 9.0.108 which fix the issue.
Improper Resource Shutdown or Release vulnerability in Apache Tomcat m ...
EPSS
7.5 High
CVSS3