Local privilege escalation via SmmComputrace memory disclosure
Published Aug 21, 2024 · Updated Aug 21, 2024
Memory disclosure in Aptio V BKS_5.0 through 5.36 allows local users to read stack or global memory through SmmComputrace. The DXE module exposes stack or global memory, but AMI has not published the faulty operation or input path that returns the data. Low-privileged local access is required, and the disclosed memory enables privilege escalation, arbitrary code execution, or operating-system security bypass.
Summary
What happened
Memory disclosure in Aptio V BKS_5.0 through 5.36 allows local users to read stack or global memory through SmmComputrace. The DXE module exposes stack or global memory, but AMI has not published the faulty operation or input path that returns the data. Low-privileged local access is required, and the disclosed memory enables privilege escalation, arbitrary code execution, or operating-system security bypass.
The record
- CVE
- CVE-2024-33656
- Published
- Aug 21, 2024
- Updated
- Aug 21, 2024
- Vendor
- American Megatrends International
- Product
- Aptio V
- Classifications
- CWE-269, CAPEC-233, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 21, 2024CVE publishedPublication date reported by the CVE source.
- Aug 21, 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=bks_5.0 <=5.36
- Affected versionversion=BKS_5.0 <=5.36
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
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