Описание
A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol (OCSP) response during a TLS handshake. Due to a logic error in how gnutls processes multi-record OCSP responses, a client with OCSP verification enabled may incorrectly accept a revoked server certificate, potentially leading to a compromise of trust.
Отчет
This issue has a LOW impact. A flaw in gnutls' OCSP stapling implementation allows a client with OCSP verification enabled to accept a revoked server certificate. This occurs when a multi-record OCSP response is stapled, and the client incorrectly reads the certificate status from an unrelated record, leading to an order-dependent acceptance of a revoked certificate.
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 6 | gnutls | Not affected | ||
| Red Hat Enterprise Linux 7 | gnutls | Not affected | ||
| Red Hat Enterprise Linux 8 | gnutls | Fix deferred | ||
| Red Hat OpenShift Container Platform 4 | openshift4/ose-hypershift-rhel9 | Under investigation | ||
| Red Hat OpenShift Container Platform 4 | rhcos | Fix deferred | ||
| Red Hat Enterprise Linux 10 | gnutls | Fixed | RHSA-2026:20613 | 26.05.2026 |
| Red Hat Enterprise Linux 10.0 Extended Update Support | gnutls | Fixed | RHSA-2026:26409 | 16.06.2026 |
| Red Hat Enterprise Linux 9 | gnutls | Fixed | RHSA-2026:20612 | 26.05.2026 |
| Red Hat Enterprise Linux 9 | gnutls | Fixed | RHSA-2026:20612 | 26.05.2026 |
| Red Hat Discovery 2 | discovery/discovery-server-rhel9 | Fixed | RHSA-2026:29197 | 24.06.2026 |
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Дополнительная информация
Статус:
3.7 Low
CVSS3
Связанные уязвимости
A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol (OCSP) response during a TLS handshake. Due to a logic error in how gnutls processes multi-record OCSP responses, a client with OCSP verification enabled may incorrectly accept a revoked server certificate, potentially leading to a compromise of trust.
A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol (OCSP) response during a TLS handshake. Due to a logic error in how gnutls processes multi-record OCSP responses, a client with OCSP verification enabled may incorrectly accept a revoked server certificate, potentially leading to a compromise of trust.
Gnutls: gnutls: security bypass allows acceptance of revoked server certificates via crafted ocsp response
A flaw was found in gnutls. A remote attacker could exploit this vulne ...
A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol (OCSP) response during a TLS handshake. Due to a logic error in how gnutls processes multi-record OCSP responses, a client with OCSP verification enabled may incorrectly accept a revoked server certificate, potentially leading to a compromise of trust.
3.7 Low
CVSS3