Описание
FreeRDP from 3.0.0 before 3.32.2 contains an uncontrolled resource allocation vulnerability that allows malicious RDP servers to force large client allocations through the DRDYNVC DATA_FIRST Length field. Attackers can declare lengths up to 4,294,967,295 bytes on running dynamic channels, causing StreamPool_Take to reserve memory before body validation and exhaust client memory.
A flaw was found in FreeRDP. A malicious Remote Desktop Protocol (RDP) server can trigger excessive memory allocation on the connecting client by specifying an arbitrarily large length in dynamic virtual channel messages. Because the application reserves memory before validating incoming message data, an attacker can exhaust client system memory, resulting in an application crash and a Denial of Service (DoS).
Отчет
A flaw was found in FreeRDP. A remote attacker controlling an RDP server can exhaust client memory by sending DRDYNVC DATA_FIRST messages with an oversized length field, resulting in a denial of service. The user must connect to an attacker-controlled server.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | freerdp | Fix deferred | ||
| Red Hat Enterprise Linux 7 | freerdp | Fix deferred | ||
| Red Hat Enterprise Linux 8 | freerdp | Fix deferred | ||
| Red Hat Enterprise Linux 9 | freerdp | Fix deferred | ||
| Red Hat Enterprise Linux 10 | freerdp | Fixed | RHSA-2026:94514 | 03.11.2026 |
Показывать по
Ссылки на источники
Дополнительная информация
Статус:
6.5 Medium
CVSS3
Связанные уязвимости
FreeRDP from 3.0.0 before 3.32.2 contains an uncontrolled resource allocation vulnerability that allows malicious RDP servers to force large client allocations through the DRDYNVC DATA_FIRST Length field. Attackers can declare lengths up to 4,294,967,295 bytes on running dynamic channels, causing StreamPool_Take to reserve memory before body validation and exhaust client memory.
FreeRDP from 3.0.0 before 3.32.2 contains an uncontrolled resource allocation vulnerability that allows malicious RDP servers to force large client allocations through the DRDYNVC DATA_FIRST Length field. Attackers can declare lengths up to 4,294,967,295 bytes on running dynamic channels, causing StreamPool_Take to reserve memory before body validation and exhaust client memory.
FreeRDP from 3.0.0 before 3.32.2 contains an uncontrolled resource all ...
FreeRDP from 3.0.0 before 3.32.2 contains an uncontrolled resource allocation vulnerability that allows malicious RDP servers to force large client allocations through the DRDYNVC DATA_FIRST Length field. Attackers can declare lengths up to 4,294,967,295 bytes on running dynamic channels, causing StreamPool_Take to reserve memory before body validation and exhaust client memory.
6.5 Medium
CVSS3