CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:H
AI Score
Confidence
Low
EPSS
Percentile
16.2%
SSVC
Exploitation
none
Automatable
no
Technical Impact
total
tgstation-server is a production scale tool for BYOND server management. Prior to 6.8.0, low permission users using the “Set .dme Path” privilege could potentially set malicious .dme files existing on the host machine to be compiled and executed. These .dme files could be uploaded via tgstation-server (requiring a separate, isolated privilege) or some other means. A server configured to execute in BYOND’s trusted security level (requiring a third separate, isolated privilege OR being set by another user) could lead to this escalating into remote code execution via BYOND’s shell() proc. The ability to execute this kind of attack is a known side effect of having privileged TGS users, but normally requires multiple privileges with known weaknesses. This vector is not intentional as it does not require control over the where deployment code is sourced from and may not require remote write access to an instance’s Configuration
directory. This problem is fixed in versions 6.8.0 and above.
[
{
"cpes": [
"cpe:2.3:a:tgstation13:tgstation-server:4.0.0.0:*:*:*:*:*:*:*"
],
"vendor": "tgstation13",
"product": "tgstation-server",
"versions": [
{
"status": "affected",
"version": "4.0.0.0",
"lessThan": "6.8.0",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
}
]
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:H
AI Score
Confidence
Low
EPSS
Percentile
16.2%
SSVC
Exploitation
none
Automatable
no
Technical Impact
total