Описание
CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled and FFM is used in Apache Tomcat.
This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.20, from 10.1.22 through 10.1.53, from 9.0.92 through 9.0.116.
Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fixes the issue.
A flaw was found in Apache Tomcat where OCSP-based certificate validation may incorrectly soft-fail during CLIENT_CERT authentication, even when soft-fail is disabled, under certain FFM-related execution paths. This can result in client certificates being accepted despite failed or unverifiable revocation checks, weakening certificate validation in specific mTLS configurations.
Отчет
This issue only affects Tomcat builds with FFM support enabled. In Red Hat Enterprise Linux, this support is only available in Tomcat package in Red Hat Enterprise Linux versions 9.8 and later, and 10.2 and later, as the feature requires Java 22 or later.
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 |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | tomcat | Fix deferred | ||
| 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 8 | tomcat | Not affected | ||
| Red Hat Enterprise Linux 9 | pki-servlet-engine | Not affected | ||
| Red Hat JBoss Web Server 5 | tomcat | Out of support scope | ||
| Red Hat Enterprise Linux 10 | tomcat9 | Fixed | RHSA-2026:25341 | 11.06.2026 |
| Red Hat Enterprise Linux 9 | tomcat | Fixed | RHSA-2026:26323 | 16.06.2026 |
| Red Hat JBoss Web Server 6.2.3 | tomcat | Fixed | RHSA-2026:20406 | 26.05.2026 |
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Дополнительная информация
Статус:
EPSS
5.9 Medium
CVSS3
Связанные уязвимости
CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled and FFM is used in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.20, from 10.1.22 through 10.1.53, from 9.0.92 through 9.0.116. Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fixes the issue.
CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled and FFM is used in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.20, from 10.1.22 through 10.1.53, from 9.0.92 through 9.0.116. Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fixes the issue.
CLIENT_CERT authentication does not fail as expected for some scenario ...
EPSS
5.9 Medium
CVSS3