Authentication bypass in iniNet Solutions GmbH’s SCADA Webserver

1) Imroper authentication

EUVDB-ID: #VU8577

Risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-13995

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication on the target system.

The weakness exists due to improper authentication by the web server. A remote attacker can bypass authentication and access sensitive information such as HMI pages or modify PLC variables.

Mitigation

Update to version 2.02.0100.

Vulnerable software versions

SCADA Webserver: All versions

External links

http://ics-cert.us-cert.gov/advisories/ICSA-17-264-04

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

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

Is there known malware, which exploits this vulnerability?

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