Authenticated code execution via misconfigured COM access controls
Published Feb 4, 2022 · Updated Sep 16, 2024
Incorrect COM interface permissions in ABB OPC Server for AC 800M before 6.0.0-4 allow remote authenticated users to execute arbitrary code. The server configures access-control lists on its COM interfaces improperly, permitting a low-privilege account to insert and run code on the hosting node. Exploitation requires network access, low-privilege credentials, and user interaction; successful code runs with the OPC Server node's authority.
Summary
What happened
Incorrect COM interface permissions in ABB OPC Server for AC 800M before 6.0.0-4 allow remote authenticated users to execute arbitrary code. The server configures access-control lists on its COM interfaces improperly, permitting a low-privilege account to insert and run code on the hosting node. Exploitation requires network access, low-privilege credentials, and user interaction; successful code runs with the OPC Server node's authority.
The record
- CVE
- CVE-2021-22284
- Published
- Feb 4, 2022
- Updated
- Sep 16, 2024
- Vendor
- GENEREX SYSTEMS Computervertriebsgesellschaft mbH
- Product
- OPC Server for AC 800M
- Classifications
- CWE-732, T1210
- Attack vector
- adjacent
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 4, 2022CVE publishedPublication date reported by the CVE source.
- Sep 16, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=5.1.1-1
- Affected versionversion=6.0.0-1
- Affected versionversion=6.0.0-2
- Affected versionversion=6.0.0-3
- Affected versionversion=unspecified <=5.1.0-x
- Affected versionversion=unspecified <=5.1.1-x
- Affected versionversion=unspecified <=6.0.0-x
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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