Medium severity5.8NVD Advisory· Published Jun 8, 2023· Updated Jun 17, 2026
CVE-2023-34243
CVE-2023-34243
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.
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Affected products
2>=5.12.5+ 1 more
- (no CPE)range: >=5.12.5
- (no CPE)range: >= 4.0.0, < 5.12.5
Patches
Vulnerability mechanics
References
2- github.com/tgstation/tgstation-server/pull/1526nvdIssue TrackingPatch
- github.com/tgstation/tgstation-server/security/advisories/GHSA-w3jx-4x93-76phnvdMitigationVendor Advisory
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