CyberRota Analysis
AI-GeneratedThe vulnerability in copyparty's SFTP front end allows authenticated users to bypass volume restrictions, enabling them to create, remove, or truncate files outside their permitted directories. By exploiting specific handlers that skip access checks, attackers can traverse symlinks and manipulate files beyond their authorized boundaries. Organizations using copyparty should prioritize addressing this issue to prevent potential unauthorized access and data manipulation.
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
copyparty contains a volume restriction bypass vulnerability in its SFTP front end that allows authenticated SFTP users to create, remove, and truncate arbitrary paths outside permitted volume boundaries by exploiting three handlers that bypass the xvol volflag enforcement. The _mkdir, _rmdir, and _chattr handlers construct destination paths using vfs.get(), vn.canonical(), and os.path.join() without invoking the chk_ap access check, enabling attackers to traverse symlinks leaving a volume's top directory and perform unauthorized file creation, deletion, or truncation via SSH_FXP_SETSTAT operations on paths outside any volume the account is authorized to access.