Arbitrary code execution via SMI handler inputs
Published Oct 30, 2023 · Updated Sep 9, 2024
Improper input validation in Lenovo ThinkPad BIOS allows local users with elevated privileges to execute arbitrary code through an SMI handler. The handler insufficiently validates its input, but Lenovo has not disclosed its name or the exact unsafe operation performed on that input. Exploitation requires local access and elevated privileges and yields arbitrary code execution in the BIOS context on affected models.
Summary
What happened
Improper input validation in Lenovo ThinkPad BIOS allows local users with elevated privileges to execute arbitrary code through an SMI handler. The handler insufficiently validates its input, but Lenovo has not disclosed its name or the exact unsafe operation performed on that input. Exploitation requires local access and elevated privileges and yields arbitrary code execution in the BIOS context on affected models.
The record
- CVE
- CVE-2022-4574
- Published
- Oct 30, 2023
- Updated
- Sep 9, 2024
- Vendor
- Lenovo
- Product
- ThinkPad BIOS
- Classifications
- CWE-20, T1542.001
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Oct 30, 2023CVE publishedPublication date reported by the CVE source.
- Sep 9, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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- Affected versionversion=various
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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