Protection Mechanism Failure in Siemens SICAM A8000 RTUs

1) Protection Mechanism Failure

EUVDB-ID: #VU48892

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-28396

CWE-ID: CWE-693 - Protection Mechanism Failure

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to insufficient implementation of security measures. An attacker can bypass implemented security restrictions and elevate privileges on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

SICAM A8000 CP-8000: before 16

SICAM A8000 CP-8021: before 16

SICAM A8000 CP-8022: before 16

External links

http://ics-cert.us-cert.gov/advisories/icsa-20-343-07

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.