Secure OS code execution via unchecked TA size
Published Nov 9, 2022 · Updated Sep 16, 2024
Out-of-bounds write in LoadModule in AMD Ryzen Embedded processors allows local users with privileges to execute secure OS/kernel code. LoadModule accepts a malicious Trusted Application without checking its size, causing an out-of-bounds write during module loading. Local low-privileged access and the ability to load a malicious TA are required; successful exploitation executes code in the secure OS/kernel context.
Summary
What happened
Out-of-bounds write in LoadModule in AMD Ryzen Embedded processors allows local users with privileges to execute secure OS/kernel code. LoadModule accepts a malicious Trusted Application without checking its size, causing an out-of-bounds write during module loading. Local low-privileged access and the ability to load a malicious TA are required; successful exploitation executes code in the secure OS/kernel context.
The record
- CVE
- CVE-2021-26392
- Published
- Nov 9, 2022
- Updated
- Sep 16, 2024
- Vendor
- AMD
- Product
- AMD Ryzen Embedded V1000 Series
- Classifications
- CWE-787, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 9, 2022CVE publishedPublication date reported by the CVE source.
- Sep 16, 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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