Input validation error in tgstation13 tgstation-server

1) Input validation error

EUVDB-ID: #VU36617

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-17107

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

In Tgstation tgstation-server 3.2.4.0 through 3.2.1.0 (fixed in 3.2.5.0), active logins would be cached, allowing subsequent logins to succeed with any username or password.

Mitigation

Install update from vendor's website.

Vulnerable software versions

tgstation-server: 3.2.1.0 - 3.2.4.0

External links

http://github.com/tgstation/tgstation-server/issues/690

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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