Privileged code execution via malformed ABL input
Published May 9, 2023 · Updated Jan 28, 2025
Insufficient input validation in AMD AGESA ABL allows remote authenticated users to corrupt ASP memory and execute code. AMD has not disclosed the affected ABL input field or the validation operation that accepts the malformed value. The attacker requires privileged access; successful exploitation compromises integrity within the AMD Secure Processor and can execute code there.
Summary
What happened
Insufficient input validation in AMD AGESA ABL allows remote authenticated users to corrupt ASP memory and execute code. AMD has not disclosed the affected ABL input field or the validation operation that accepts the malformed value. The attacker requires privileged access; successful exploitation compromises integrity within the AMD Secure Processor and can execute code there.
The record
- CVE
- CVE-2021-46773
- Published
- May 9, 2023
- Updated
- Jan 28, 2025
- Vendor
- AMD
- Product
- AMD Ryzen Threadripper PRO 5000 WX-Series Processors (Chagall WS)
- Classifications
- Unavailable
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- May 9, 2023CVE publishedPublication date reported by the CVE source.
- Jan 28, 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?
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- Affected versionversion=various
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
No sourced classifications are available.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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