CVE-2023-34243CWE-200

Windows user name disclosure in TGstation

Medium · published June 8, 2023

CVSS v3.1
5.8
EPSS
0%
Percentile
38.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00460 · 38.9th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2023-06-08T21:09Z
EPSS history
Timeline
  • 08 JUN 21:09Z
    Windows user name disclosure in TGstation
    cvelistv5