CyberRota Analysis
AI-GeneratedAn authenticated RDP client using FreeRDP versions prior to 3.28.0 is vulnerable to a denial-of-service condition due to improper handling of audio format parameters, which can lead to a server-side process termination. This issue arises when specific values for nBlockAlign and nChannels are advertised, causing a division by zero error. Organizations utilizing FreeRDP for remote desktop services should prioritize upgrading to version 3.28.0 or later to mitigate this risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.28.0, an authenticated RDP client can advertise DVI ADPCM with nBlockAlign equal to 8 and nChannels equal to 2 to make the `bs` calculation in rdpsnd_server_select_format in channels/rdpsnd/server/rdpsnd_main.c equal zero. The subsequent out_frames modulo `bs` operation raises SIGFPE and terminates the server-side rdpsnd channel process. This vulnerability fixed in 3.28.0.