CVE-2023-34243— Windows user name disclosure in TGstation
Quick assessment
Affected
tgstation tgstation-server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
tgstation-server是一款用于管理生产BYOND服务器的工具集。 TGstation 5.12.5之前版本存在信息泄露漏洞，该漏洞源于可以通过使用无效密码强制登录端点来发现用户名。
Possible ATT&CK Techniques 1 AI
T1110 · Brute Force
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I. Basic Information for CVE-2023-34243
Vulnerability Information
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Vulnerability Title
Windows user name disclosure in TGstation
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
tgstation-server 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
tgstation-server是一款用于管理生产BYOND服务器的工具集。 TGstation 5.12.5之前版本存在信息泄露漏洞，该漏洞源于可以通过使用无效密码强制登录端点来发现用户名。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| tgstation | tgstation-server | >= 4.0.0, < 5.12.5 | - |
|
II. Public POCs for CVE-2023-34243
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2023-34243 (1)
-
https://github.com/tgstation/tgstation-server/pull/1526 x_refsource_MISC
Vendor Advisories for CVE-2023-34243 (1)
IV. Related Vulnerabilities
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V. Comments for CVE-2023-34243
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