Host privilege escalation via crafted file upload
Published Jul 21, 2021 · Updated Aug 3, 2024
Privilege escalation in Tenable Nessus Agent 8.2.5 and earlier allows local users with Nessus administrator access to gain host administrator privileges. Tenable identifies a specially crafted file upload as the trigger but has not disclosed the responsible component or unsafe file operation. Exploitation requires Nessus administrator access and user interaction; success grants administrator control of the host.
Summary
What happened
Privilege escalation in Tenable Nessus Agent 8.2.5 and earlier allows local users with Nessus administrator access to gain host administrator privileges. Tenable identifies a specially crafted file upload as the trigger but has not disclosed the responsible component or unsafe file operation. Exploitation requires Nessus administrator access and user interaction; success grants administrator control of the host.
The record
- CVE
- CVE-2021-20106
- Published
- Jul 21, 2021
- Updated
- Aug 3, 2024
- Vendor
- Tenable
- Product
- Nessus Agent
- Classifications
- T1068
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Jul 21, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 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?
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- Affected versionversion=Nessus Agent 8.2.5 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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