Описание
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.30.0, FreeRDP server-side RDSTLS in libfreerdp/core/rdstls.c accepts an attacker-supplied RDSTLS_TYPE_CAPABILITIES PDU while rdstls_server_authenticate is waiting for RDSTLS_TYPE_AUTHREQ, leaving resultCode at RDSTLS_RESULT_SUCCESS and allowing a remote unauthenticated client to bypass the RedirectionGuid, username, domain, or password checks. This issue is fixed in version 3.30.0.
A vulnerability in FreeRDP's server-side RDSTLS allows remote, unauthenticated attackers to bypass authentication. By sending a crafted capabilities PDU instead of the expected authentication request, an attacker can gain an authenticated session without valid credentials.
Отчет
An Important flaw in FreeRDP 3.0+ allows remote, unauthenticated attackers to bypass authentication and gain session access. This vulnerability only affects servers explicitly configured with the non-default RdstlsSecurity = TRUE setting. Because RDSTLS was introduced in version 3.0, RHEL 9 and older releases are completely unaffected.
Меры по смягчению последствий
Do not enable RDSTLS server authentication (RdstlsSecurity); it is disabled by default. If FreeRDP is deployed as an RDP server with RDSTLS enabled, disable RdstlsSecurity
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | freerdp | Affected | ||
| Red Hat Enterprise Linux 6 | freerdp | Not affected | ||
| Red Hat Enterprise Linux 7 | freerdp | Not affected | ||
| Red Hat Enterprise Linux 8 | freerdp | Not affected | ||
| Red Hat Enterprise Linux 9 | freerdp | Not affected |
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Дополнительная информация
Статус:
EPSS
7.5 High
CVSS3
Связанные уязвимости
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.30.0, FreeRDP server-side RDSTLS in libfreerdp/core/rdstls.c accepts an attacker-supplied RDSTLS_TYPE_CAPABILITIES PDU while rdstls_server_authenticate is waiting for RDSTLS_TYPE_AUTHREQ, leaving resultCode at RDSTLS_RESULT_SUCCESS and allowing a remote unauthenticated client to bypass the RedirectionGuid, username, domain, or password checks. This issue is fixed in version 3.30.0.
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.30.0, FreeRDP server-side RDSTLS in libfreerdp/core/rdstls.c accepts an attacker-supplied RDSTLS_TYPE_CAPABILITIES PDU while rdstls_server_authenticate is waiting for RDSTLS_TYPE_AUTHREQ, leaving resultCode at RDSTLS_RESULT_SUCCESS and allowing a remote unauthenticated client to bypass the RedirectionGuid, username, domain, or password checks. This issue is fixed in version 3.30.0.
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior ...
EPSS
7.5 High
CVSS3