Описание
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, progressive_decompress_tile_upgrade() detects a mismatch via progressive_rfx_quant_cmp_equal() but only emits WLog_WARN, execution continues. The wrapped value (247) is used as a shift exponent, causing undefined behavior and an approximately 80 billion iteration loop (CPU DoS). This issue has been patched in version 3.24.2.
A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol (RDP). A remote attacker could exploit this vulnerability by sending a specially crafted RDP message. This can lead to an undefined behavior where a wrapped value is used as a shift exponent, causing an approximately 80 billion iteration loop. This results in a Denial of Service (DoS) due to excessive CPU utilization.
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 | freerdp | Out of support scope | ||
| Red Hat Enterprise Linux 7 | freerdp | Out of support scope | ||
| Red Hat Enterprise Linux 10 | freerdp | Fixed | RHSA-2026:8458 | 16.04.2026 |
| Red Hat Enterprise Linux 10 | freerdp | Fixed | RHSA-2026:19033 | 19.05.2026 |
| Red Hat Enterprise Linux 10.0 Extended Update Support | freerdp | Fixed | RHSA-2026:11333 | 28.04.2026 |
| Red Hat Enterprise Linux 8 | freerdp | Fixed | RHSA-2026:8945 | 20.04.2026 |
| Red Hat Enterprise Linux 8.2 Advanced Update Support | freerdp | Fixed | RHSA-2026:11651 | 29.04.2026 |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | freerdp | Fixed | RHSA-2026:11649 | 29.04.2026 |
| Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | freerdp | Fixed | RHSA-2026:11649 | 29.04.2026 |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | freerdp | Fixed | RHSA-2026:12388 | 30.04.2026 |
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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 version 3.24.2, progressive_decompress_tile_upgrade() detects a mismatch via progressive_rfx_quant_cmp_equal() but only emits WLog_WARN, execution continues. The wrapped value (247) is used as a shift exponent, causing undefined behavior and an approximately 80 billion iteration loop (CPU DoS). This issue has been patched in version 3.24.2.
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, progressive_decompress_tile_upgrade() detects a mismatch via progressive_rfx_quant_cmp_equal() but only emits WLog_WARN, execution continues. The wrapped value (247) is used as a shift exponent, causing undefined behavior and an approximately 80 billion iteration loop (CPU DoS). This issue has been patched in version 3.24.2.
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior ...
Уязвимость функции progressive_decompress_tile_upgrade() RDP-клиента FreeRDP, позволяющая нарушителю вызвать отказ в обслуживании
EPSS
7.5 High
CVSS3