Vulnerability identifier: #VU27351

Vulnerability risk: Low

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

CVE-ID: CVE-2020-8478

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
OPC Server for AC 800M
Other software / Other software solutions
MMS Server for AC 800M
Other software / Other software solutions
Base Software for SoftControl
Other software / Other software solutions

Vendor: ABB

Description

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

The vulnerability exists due to weak Kernel object permissions. A local user can cause denial of service (DoS) conditions by corrupting memory locations and gain elevated privileges depending on how those memory locations were used.

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

Vulnerable software versions

OPC Server for AC 800M: All versions

MMS Server for AC 800M: All versions

Base Software for SoftControl: All versions

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External links
http://applied-risk.com/assets/uploads/whitepapers/AR2020002-ABB-800xA-MultipleVulnerabilities.pdf
http://search.abb.com/library/Download.aspx?DocumentID=2PAA121236&LanguageCode=en&DocumentPartId=&Action=Launch

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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.