CVE-2023-34243

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.

• CWE-200
• CWE-307

• https://github.com/tgstation/tgstation-server/pull/1526Issue Tracking, Patch
• https://github.com/tgstation/tgstation-server/security/advisories/GHSA-w3jx-4x93-76phMitigation, Vendor Advisory
• https://github.com/tgstation/tgstation-server/pull/1526Issue Tracking, Patch
• https://github.com/tgstation/tgstation-server/security/advisories/GHSA-w3jx-4x93-76phMitigation, Vendor Advisory

Published

Jun 8, 2023

Last Modified

Jun 17, 2026

Status

Modified

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