Path traversal in tgstation-server



Published: 2020-08-04
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-16136
CWE-ID CWE-22
Exploitation vector Network
Public exploit N/A
Vulnerable software
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tgstation-server
Server applications / Other server solutions

Vendor tgstation13.org

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Path traversal

EUVDB-ID: #VU33670

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-16136

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in "/Administration/Logs/" requests. A remote authenticated attacker can send a specially crafted HTTP request and download arbitrary files on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

tgstation-server: 4.4.0 - 4.4.1

External links

http://github.com/tgstation/tgstation-server
http://github.com/tgstation/tgstation-server/security/advisories/GHSA-r8pp-42wr-2gc4


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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