CVE-2023-34243 Information

Description

TGstation is a toolset to manage production BYOND servers. In affected versions if a Windows user was registered in tgstation-server (TGS) an attacker could discover their username by brute-forcing the login endpoint with an invalid password. When a valid Windows logon was found a distinct response would be generated. This issue has been addressed in version 5.12.5. Users are advised to upgrade. Users unable to upgrade may be mitigated by rate-limiting API calls with software that sits in front of TGS in the HTTP pipeline such as fail2ban.

Reference

https://github.com/tgstation/tgstation-server/pull/1526 https://github.com/tgstation/tgstation-server/security/advisories/GHSA-w3jx-4x93-76ph