Arbitrary writes via improper SMM buffer verification
Published Apr 21, 2022 · Updated Sep 17, 2024
Improper SMM buffer verification in Dell PowerEdge BIOS allows local users with high privileges to write memory or interrupt service. Dell identifies the SMM communication buffer as the affected locus but does not disclose which handler or validation operation accepts the unsafe buffer. Exploitation requires local high privileges and high-complexity conditions; abuse enables arbitrary writes or an unspecified denial-of-service condition.
Summary
What happened
Improper SMM buffer verification in Dell PowerEdge BIOS allows local users with high privileges to write memory or interrupt service. Dell identifies the SMM communication buffer as the affected locus but does not disclose which handler or validation operation accepts the unsafe buffer. Exploitation requires local high privileges and high-complexity conditions; abuse enables arbitrary writes or an unspecified denial-of-service condition.
The record
- CVE
- CVE-2022-22558
- Published
- Apr 21, 2022
- Updated
- Sep 17, 2024
- Vendor
- Dell
- Product
- Dell PowerEdge
- Classifications
- CWE-119, T1499
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Apr 21, 2022CVE publishedPublication date reported by the CVE source.
- Sep 17, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=unspecified <BIOS update for PowerEdge 13G Intel 1S/2S and 14G AMD
What conditions does exploitation require?
What is affected?
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
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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