Information disclosure in Tgstation Tgstation-Server
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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (38.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Tgstation Tgstation-Server — versions >= 4.0.0, < 5.12.5
- Tgstation13 Tgstation-Server
Weakness classification (CWE)
References
- github.com/tgstation/tgstation-server/security/advisories/GHSA-w3jx-4x93-76ph (Mitigation, Vendor Advisory)
- github.com/tgstation/tgstation-server/pull/1526 (Patch, Issue Tracking)
Frequently asked questions
- What is CVE-2023-34243?
- CVE-2023-34243 is a medium-severity vulnerability in Tgstation Tgstation-Server, classified under Information Disclosure. CVSS score: 5.8/10. Published 2023-06-08.
- How severe is CVE-2023-34243?
- Medium severity. CVSS v3 base score is 5.8 out of 10.