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osvGoogleOSV:CVE-2023-34243
HistoryJun 08, 2023 - 10:15 p.m.

CVE-2023-34243

2023-06-0822:15:09
Google
osv.dev
2
tgstation
vulnerability
discovery
fix
windows
username
brute-forcing
login
endpoint
invalid password
upgrade
rate-limiting
api calls
fail2ban

5.8 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

6.9 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

30.6%

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.

5.8 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

6.9 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

30.6%

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