Privilege escalation in ABB System 800xA Base

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU27361

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-8474

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to weak Registry Key permissions. A local user can modify the system-wide configuration, which would lead to the arbitrary loading and execution of a DLL when certain ABB programs are opened, leading to privilege escalation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

800xA Base: 6.0

External links

http://search.abb.com/library/Download.aspx?DocumentID=2PAA121221&LanguageCode=en&DocumentPartId=&Action=Launch

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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