Code execution via unauthorized SPI ROM writes
Published Nov 14, 2023 · Updated Dec 3, 2024
Improper access control in AMD processor SMM firmware allows attackers to write SPI ROM and execute arbitrary code via SMM. AMD has not disclosed the affected SMM code path or the access-control check that fails before SPI ROM writes. The consequence is attacker-controlled firmware code execution; AMD does not state the required initial access or trigger.
Summary
What happened
Improper access control in AMD processor SMM firmware allows attackers to write SPI ROM and execute arbitrary code via SMM. AMD has not disclosed the affected SMM code path or the access-control check that fails before SPI ROM writes. The consequence is attacker-controlled firmware code execution; AMD does not state the required initial access or trigger.
The record
- CVE
- CVE-2022-23821
- Published
- Nov 14, 2023
- Updated
- Dec 3, 2024
- Vendor
- AMD
- Product
- AMD Ryzen 7035 Series Processors with Radeon Graphics (Rembrandt-R)
- Classifications
- T1542.001
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Nov 14, 2023CVE publishedPublication date reported by the CVE source.
- Dec 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=various
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What is affected?
Published CVSS scores
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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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