Advisories for Golang/Github.com/Drakkan/Sftpgo package

2024

SFTPGo allows administrators to restrict command execution from the EventManager

One powerful feature of SFTPGo is the ability to have the EventManager execute scripts or run applications in response to certain events. This feature is very common in all software similar to SFTPGo and is generally unrestricted. However, any SFTPGo administrator with permission to run a script has access to the underlying OS/container with the same permissions as the user running SFTPGo. This is unexpected for some SFTPGo administrators who …

SFTPGo's JWT implmentation lacks certain security measures

In SFTPGo 2.6.2, the JWT implementation lacks certain security measures, such as using JWT ID (JTI) claims, nonces, and proper expiration and invalidation mechanisms.

SFTPGo has insufficient access control for password reset

SFTPGo WebAdmin and WebClient support password reset. This feature is disabled in the default configuration. In SFTPGo versions prior to v2.6.1, if the feature is enabled, even users with access restrictions (e.g. expired) can reset their password and log in.

2022

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

SFTPGo is an SFTP server written in Go. Versions prior to 2.3.5 are subject to Cross-site scripting (XSS) vulnerabilities in the SFTPGo WebClient, allowing remote attackers to inject malicious code. This issue is patched in version 2.3.5. No known workarounds exist.

Use of Password Hash With Insufficient Computational Effort

SFTPGo is configurable SFTP server with optional HTTP/S, FTP/S and WebDAV support. SFTPGo WebAdmin and WebClient support login using TOTP (Time-based One Time Passwords) as a secondary authentication factor. Because TOTPs are often configured on mobile devices that can be lost, stolen or damaged, SFTPGo also supports recovery codes. These are a set of one time use codes that can be used instead of the TOTP. In SFTPGo versions from …