HOMEVULNERABILITIESCVE-2023-34243
MEDIUM

CVE-2023-34243

CWE-200Published: June 8, 2023· Updated: Jun 17, 2026

5.3
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2023-34243 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected Vendors & Products

tgstation131 product(s)
tgstation-server
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

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

All References (4)

→
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

Quick Facts

CVE IDCVE-2023-34243
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-200
CISA KEVNo
Affected1 vendor(s)
PublishedJun 8, 2023

Related CVEs (CWE-200)

CVE-2008-0082
10.0
CVE-2008-1155
10.0
CVE-2020-13702
10.0
CVE-2026-27604
10.0
CVE-2008-1252
10.0
CVE-2008-3914
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-34243 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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