Описание
OpenSSH before 10.3 mishandles the authorized_keys principals option in uncommon scenarios involving a principals list in conjunction with a Certificate Authority that makes certain use of comma characters.
A flaw was found in OpenSSH. This vulnerability arises from the incorrect handling of the authorized_keys principals option in uncommon scenarios. Specifically, when a principals list is used with a Certificate Authority that includes comma characters, OpenSSH may misinterpret the input. This could lead to security bypasses, potentially allowing unintended access or information disclosure in specific authentication contexts.
Отчет
The risk posed by this flaw to Red Hat products is limited. The use of SSH certificates is not enabled by default and requires that users opt-in to the feature. Further, when following documented guidance ssh connections should only be permitted to non-root users which will limit the impact of this flaw.
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 | openssh | Fix deferred | ||
| Red Hat Enterprise Linux 7 | openssh | Fix deferred | ||
| Red Hat OpenShift Container Platform 4 | rhcos | Fix deferred | ||
| Red Hat Enterprise Linux 10 | openssh | Fixed | RHSA-2026:13380 | 04.05.2026 |
| Red Hat Enterprise Linux 10 | openssh | Fixed | RHSA-2026:19069 | 19.05.2026 |
| Red Hat Enterprise Linux 10.0 Extended Update Support | openssh | Fixed | RHSA-2026:12389 | 30.04.2026 |
| Red Hat Enterprise Linux 8 | openssh | Fixed | RHSA-2026:13383 | 04.05.2026 |
| Red Hat Enterprise Linux 8 | openssh | Fixed | RHSA-2026:13383 | 04.05.2026 |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | openssh | Fixed | RHSA-2026:22329 | 01.06.2026 |
| Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | openssh | Fixed | RHSA-2026:22329 | 01.06.2026 |
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Дополнительная информация
Статус:
EPSS
4.8 Medium
CVSS3
Связанные уязвимости
OpenSSH before 10.3 mishandles the authorized_keys principals option in uncommon scenarios involving a principals list in conjunction with a Certificate Authority that makes certain use of comma characters.
OpenSSH before 10.3 mishandles the authorized_keys principals option in uncommon scenarios involving a principals list in conjunction with a Certificate Authority that makes certain use of comma characters.
OpenSSH before 10.3 mishandles the authorized_keys principals option i ...
OpenSSH before 10.3 mishandles the authorized_keys principals option in uncommon scenarios involving a principals list in conjunction with a Certificate Authority that makes certain use of comma characters.
EPSS
4.8 Medium
CVSS3