CyberRota Analysis
AI-GeneratedFreeRDP versions prior to 3.27.0 are vulnerable to a memory disclosure or crash due to improper validation of decoded frame dimensions in the H.264 decoder. A malicious RDP server can exploit this flaw by sending a bitstream that causes the client to read beyond allocated memory, potentially exposing sensitive data. Organizations using FreeRDP should prioritize upgrading to version 3.27.0 to mitigate this high-severity risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
Note: these links are listed for security research and verification purposes only.
Original NVD Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP H.264 decoder backends can return YUV planes sized from the bitstream without comparing the decoded width and height to the RDPGFX surface dimensions used to validate region rectangles. A malicious RDP server can provide an AVC420 or AVC444 bitstream whose decoded frame is smaller than the negotiated surface, causing yuv420_context_decode and the YUV-to-RGB conversion paths to read beyond the decoder-owned planes in libfreerdp/codec/h264.c and the selected H.264 backend. This can disclose client memory or crash the client. This issue is fixed in version 3.27.0.