Authentication bypass in Siemens SIMATIC IT

1) Authentication bypass

EUVDB-ID: #VU15895

Risk: Low

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-13804

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

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

The vulnerability exists due to improper authentication. A remote attacker can with network access to the installation can bypass the application-level authentication and conduct further attacks.

Mitigation

Install update from vendor's website.

Vulnerable software versions

SIMATIC IT UA Discrete Manufacturing: All versions

SIMATIC IT LMS: All versions

SIMATIC IT Production Suite: All versions

External links

http://ics-cert.us-cert.gov/advisories/ICSA-18-317-07

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.