Physical SMRAM writes via unverified SMM buffer
Published Mar 19, 2024 · Updated Aug 12, 2024
Improper SMM buffer verification in Dell PowerEdge BIOS allows physically proximate attackers with high privileges to write arbitrary data to SMRAM. The BIOS fails to validate an SMM communication buffer before using its contents for a write into protected System Management RAM. Exploitation requires physical access, high privileges, and high attack complexity; Dell has not disclosed the affected SMI handler or controllable buffer fields.
Summary
What happened
Improper SMM buffer verification in Dell PowerEdge BIOS allows physically proximate attackers with high privileges to write arbitrary data to SMRAM. The BIOS fails to validate an SMM communication buffer before using its contents for a write into protected System Management RAM. Exploitation requires physical access, high privileges, and high attack complexity; Dell has not disclosed the affected SMI handler or controllable buffer fields.
The record
- CVE
- CVE-2024-25942
- Published
- Mar 19, 2024
- Updated
- Aug 12, 2024
- Vendor
- Dell
- Product
- Dell PowerEdge
- Classifications
- CWE-20, CWE-787, T1068
- Attack vector
- physical
- Privileges
- admin
Timeline
How it unfolded
- Mar 19, 2024CVE publishedPublication date reported by the CVE source.
- Aug 12, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=N/A <1.19.0
- Affected versionversion=N/A <2.14.0
- Affected versionversion=N/A <2.19.0
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.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo