Improper Authentication in Digi PortServer TS 16

1) Improper Authentication

EUVDB-ID: #VU56607

Risk: Medium

CVSSv3.1: 8.8 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-38412

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests. A remote attacker on the local network can enable the SNMP service and manipulate the community strings to achieve further control.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

PortServer TS 16: 82000684 - 82000685

External links

http://ics-cert.us-cert.gov/advisories/icsa-21-257-01

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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