Описание
FreeRDP before 3.32.2 contains a NULL pointer dereference vulnerability that allows malicious RDP servers to crash xfreerdp clients by sending a zero-width RDPGFX ResetGraphics PDU. The failed resize in gdi_resize_ex leaves the primary display null without ending the session, so a later bitmap update crashes the client in gdi_Bitmap_Paint.
A flaw was found in FreeRDP. A malicious Remote Desktop Protocol (RDP) server can cause a Denial of Service (DoS) by sending a graphics reset packet with a width of zero, followed by a standard display update. Because the client fails to properly handle the zero-width dimension, it releases its primary display buffer without closing the connection, leading to an unhandled crash when attempting to render the subsequent update.
Отчет
A flaw was found in FreeRDP. A remote attacker controlling an RDP server can cause a connected FreeRDP client to crash via a crafted zero-width graphics reset that triggers a NULL pointer dereference, 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 |
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Дополнительная информация
Статус:
EPSS
6.5 Medium
CVSS3
Связанные уязвимости
FreeRDP before 3.32.2 contains a NULL pointer dereference vulnerability that allows malicious RDP servers to crash xfreerdp clients by sending a zero-width RDPGFX ResetGraphics PDU. The failed resize in gdi_resize_ex leaves the primary display null without ending the session, so a later bitmap update crashes the client in gdi_Bitmap_Paint.
FreeRDP before 3.32.2 contains a NULL pointer dereference vulnerability that allows malicious RDP servers to crash xfreerdp clients by sending a zero-width RDPGFX ResetGraphics PDU. The failed resize in gdi_resize_ex leaves the primary display null without ending the session, so a later bitmap update crashes the client in gdi_Bitmap_Paint.
FreeRDP before 3.32.2 contains a NULL pointer dereference vulnerabilit ...
FreeRDP before 3.32.2 contains a NULL pointer dereference vulnerability that allows malicious RDP servers to crash xfreerdp clients by sending a zero-width RDPGFX ResetGraphics PDU. The failed resize in gdi_resize_ex leaves the primary display null without ending the session, so a later bitmap update crashes the client in gdi_Bitmap_Paint.
EPSS
6.5 Medium
CVSS3