#VU67892 Improper access control in MicroSCADA X SYS600 and MicroSCADA Pro SYS600 - CVE-2022-29492

Vulnerability identifier: #VU67892

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-29492

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MicroSCADA X SYS600
Server applications / SCADA systems
MicroSCADA Pro SYS600
Server applications / SCADA systems

Vendor: Hitachi Energy

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions within the handling of a malformed IEC 104 TCP packet. A remote attacker can bypass implemented security restrictions and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

MicroSCADA X SYS600: 9.4 FP2 Hotfix 4 - 10.3.1

MicroSCADA Pro SYS600: 9.4 FP2 Hotfix 4 - 10.3.1

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External links
https://search.abb.com/library/Download.aspx?DocumentID=8DBD000106&LanguageCode=en&DocumentPartId=&Action=Launch
https://www.cisa.gov/uscert/ics/advisories/icsa-22-272-01

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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