Service interruption via boot-loader out-of-bounds read
Published Jan 10, 2023 · Updated Apr 9, 2025
Out-of-bounds reads in AMD EPYC 7002 and 7003 SEV firmware allow local users to interrupt service through the ASP boot loader. The ASP boot loader insufficiently validates attacker-controlled input before reading memory beyond an intended buffer boundary. Low-privileged local access is required; the resulting invalid memory access can stop platform service, while no confidentiality or integrity impact is reported.
Summary
What happened
Out-of-bounds reads in AMD EPYC 7002 and 7003 SEV firmware allow local users to interrupt service through the ASP boot loader. The ASP boot loader insufficiently validates attacker-controlled input before reading memory beyond an intended buffer boundary. Low-privileged local access is required; the resulting invalid memory access can stop platform service, while no confidentiality or integrity impact is reported.
The record
- CVE
- CVE-2021-46768
- Published
- Jan 10, 2023
- Updated
- Apr 9, 2025
- Vendor
- AMD
- Product
- AMD EPYC 7002 Series Processors
- Classifications
- CWE-125, T1499
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 10, 2023CVE publishedPublication date reported by the CVE source.
- Apr 9, 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
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Attacks
What attackers are doing with it
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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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