CyberRota Analysis
AI-GeneratedRclone versions prior to 1.75.0 are vulnerable to a memory exhaustion attack via the shared HTTP CONNECT helper, which improperly handles oversized headers from a malicious proxy. This can lead to process failure, impacting the availability of file synchronization services. Users of rclone, particularly those utilizing FTP and SFTP proxy connections, should prioritize upgrading to version 1.75.0 to mitigate this 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
rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.75.0, the shared HTTP CONNECT helper in lib/proxy/http.go parses proxy CONNECT responses with http.ReadResponse over an unrestricted buffered reader, allowing a malicious or compromised configured proxy, or an active on-path actor controlling a plaintext HTTP proxy hop, to send oversized headers that grow memory until the rclone process fails. The affected helper is used by FTP and SFTP proxy connections, and SFTP reaches the parser before SSH server authentication, so target host key validation does not constrain a malicious proxy. This issue is fixed in 1.75.0.