CyberRota Analysis
AI-GeneratedFreeRDP clients prior to version 3.27.0 are vulnerable to a heap buffer overflow due to improper handling of the max_xmit_frag value from TS Gateway, allowing a malicious gateway to send oversized response fragments. This vulnerability can lead to client crashes and potentially enable remote code execution through heap corruption. Organizations using FreeRDP should prioritize updating 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 clients using TS Gateway accept a server-controlled max_xmit_frag value in libfreerdp/core/gateway/rpc_bind.c without bounding it to the 4088-byte ReceiveFragment allocation. A malicious gateway can advertise 65535 and then send a response fragment of the same length, causing rpc_channel_read in libfreerdp/core/gateway/rpc.c to write up to 65535 bytes into the smaller ReceiveFragment buffer. This can crash the client and may permit code execution through attacker-controlled heap corruption. This issue is fixed in version 3.27.0.