CVE-2025-21611

tgstation-server's role authorization incorrectly OR'd with user's enabled status

Published Jan 6, 2025 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
tgstation-server is a production scale tool for BYOND server management. Prior to 6.12.3, roles used to authorize API methods were incorrectly OR'd instead of AND'ed with the role used to determine if a user was enabled. This allows enabled users access to most, but not all, authorized actions regardless of their permissions. Notably, the WriteUsers right is unaffected so users may not use this bug to permanently elevate their account permissions. The fix is release in tgstation-server-v6.12.3.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-2571 tgstation-server is a production scale tool for BYOND server management. Prior to 6.12.3, roles used to authorize API methods were incorrectly OR'd instead of AND'ed with the role used to determine if a user was enabled. This allows enabled users access to most, but not all, authorized actions regardless of their permissions. Notably, the WriteUsers right is unaffected so users may not use this bug to permanently elevate their account permissions. The fix is release in tgstation-server-v6.12.3.
History
Type Values Removed Values Added
First Time appeared Tgstation13
Tgstation13 tgstation-server
CPEs cpe:2.3:a:tgstation13:tgstation-server:*:*:*:*:*:*:*:*
Vendors & Products Tgstation13
Tgstation13 tgstation-server
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description tgstation-server is a production scale tool for BYOND server management. Prior to 6.12.3, roles used to authorize API methods were incorrectly OR'd instead of AND'ed with the role used to determine if a user was enabled. This allows enabled users access to most, but not all, authorized actions regardless of their permissions. Notably, the WriteUsers right is unaffected so users may not use this bug to permanently elevate their account permissions. The fix is release in tgstation-server-v6.12.3.
Title tgstation-server's role authorization incorrectly OR'd with user's enabled status
Weaknesses CWE-285
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jan 6, 2025, 4:49 PM
Reserved
Dec 29, 2024, 3:00 AM
Status
Analyzed
Published
Jan 6, 2025, 4:15 PM
Modified
Jun 17, 2026, 8:43 AM