Local privilege escalation via failed temporary-file overwrite
Published Mar 11, 2024 · Updated Feb 13, 2025
Privilege escalation in the Windows agent in Checkmk allows local users to execute attacker-controlled files with SYSTEM privileges. The agent writes command files to C:\Windows\Temp and, when a guessed read-only filename already exists, executes that file after its rewrite fails. Exploitation requires local file access and prediction of the agent's process-based filename; successful code runs as LocalSystem.
Summary
What happened
Privilege escalation in the Windows agent in Checkmk allows local users to execute attacker-controlled files with SYSTEM privileges. The agent writes command files to C:\Windows\Temp and, when a guessed read-only filename already exists, executes that file after its rewrite fails. Exploitation requires local file access and prediction of the agent's process-based filename; successful code runs as LocalSystem.
The record
- CVE
- CVE-2024-0670
- Published
- Mar 11, 2024
- Updated
- Feb 13, 2025
- Vendor
- Checkmk GmbH
- Product
- Checkmk
- Classifications
- CWE-427, CAPEC-233, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 11, 2024CVE publishedPublication date reported by the CVE source.
- Feb 13, 2025Record 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=2.0.0 <=2.0.0p39
- Affected versionversion=2.0.0 <2.0.0p39
- Affected versionversion=2.1.0 <2.1.0p40
- Affected versionversion=2.2.0 <2.2.0p23
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
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
- SEC Consult temporary-file privilege-escalation proof of conceptfunctional · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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