Privilege escalation via weak folder access controls
Published Apr 28, 2020 · Updated Aug 4, 2024
Incorrect folder permissions in four ABB System 800xA components allow local users with low privileges to alter system and application files. Weak ACLs on folders used by OPC Server for AC 800M 6.0 and earlier, and the other three components 6.1 and earlier, permit unauthorized reads, changes, additions, and deletions. Exploitation requires an authenticated local or remote-desktop login and can disrupt data updates or alter logs and function settings after a component restart that the flaw cannot trigger.
Summary
What happened
Incorrect folder permissions in four ABB System 800xA components allow local users with low privileges to alter system and application files. Weak ACLs on folders used by OPC Server for AC 800M 6.0 and earlier, and the other three components 6.1 and earlier, permit unauthorized reads, changes, additions, and deletions. Exploitation requires an authenticated local or remote-desktop login and can disrupt data updates or alter logs and function settings after a component restart that the flaw cannot trigger.
The record
- CVE
- CVE-2020-8472
- Published
- Apr 28, 2020
- Updated
- Aug 4, 2024
- Vendor
- ABB
- Product
- Control Builder M Professional
- Classifications
- CWE-732, T1574.010
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 28, 2020CVE publishedPublication date reported by the CVE source.
- Aug 4, 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=6.1 and earlier
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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