漏洞信息
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Vulnerability Title
FreeRDP RDPGFX CacheToSurface heap-buffer-overflow via clamped-rectangle validation bypass
Vulnerability Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, a malicious RDP server can trigger a heap-buffer-overflow write in the FreeRDP client by sending crafted RDPGFX PDUs. The bug is in gdi_CacheToSurface: it validates a destination rectangle that is clamped to UINT16_MAX, but then performs the copy using the original cacheEntry->width/height. This can cause a large out-of-bounds heap write and may lead to client crashes or code execution. This bug is reachable from a malicious RDP server, but only when the client has RDPGFX enabled. This vulnerability is fixed in 3.26.0.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Vulnerability Type
堆缓冲区溢出
Vulnerability Title
FreeRDP 安全漏洞
Vulnerability Description
FreeRDP是FreeRDP团队的一款开源的远程桌面协议(RDP)的实现。 FreeRDP 3.26.0之前版本存在安全漏洞,该漏洞源于恶意RDP服务器可通过发送特制RDPGFX PDU触发客户端堆缓冲区溢出写入,gdi_CacheToSurface中验证目标矩形但使用原始cacheEntry->width/height进行复制,可能导致客户端崩溃或代码执行。
CVSS Information
N/A
Vulnerability Type
N/A