Skip to content

Log Downloading Could Traverse Entire Filesystem

High
Cyberboss published GHSA-r8pp-42wr-2gc4 Jul 31, 2020

Package

tgstation-server

Affected versions

4.4.0-4.4.1

Patched versions

>=4.4.2

Description

Impact

Users with permission to download logs can use the .. path identifier to download any file accessible by the server user.

Patches

f219028

Workarounds

Remove the Edit Users and Download Server Logs permissions from all users that should not have access to the host filesystem.

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CVE ID

CVE-2020-16136

Weaknesses

No CWEs

Credits