CVE-2022-40250

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Summary

CVECVE-2022-40250
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-09-20 18:15:00 UTC
Updated2022-09-24 02:38:00 UTC
DescriptionAn attacker can exploit this vulnerability to elevate privileges from ring 0 to ring -2, execute arbitrary code in System Management Mode - an environment more privileged than operating system (OS) and completely isolated from it. Running arbitrary code in SMM additionally bypasses SMM-based SPI flash protections against modifications, which can help an attacker to install a firmware backdoor/implant into BIOS. Such a malicious firmware code in BIOS could persist across operating system re-installs. Additionally, this vulnerability potentially could be used by malicious actors to bypass security mechanisms provided by UEFI firmware (for example, Secure Boot and some types of memory isolation for hypervisors). This issue affects: Module name: SmmSmbiosElog SHA256: 3a8acb4f9bddccb19ec3b22b22ad97963711550f76b27b606461cd5073a93b59 Module GUID: 8e61fd6b-7a8b-404f-b83f-aa90a47cabdf This issue affects: AMI Aptio 5.x. This issue affects: AMI Aptio 5.x.

Risk And Classification

Problem Types: CWE-787

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Ami Aptio V 5.0 All All All
Hardware Intel Nuc M15 Laptop Kit Lapbc510 - All All All
Operating System Intel Nuc M15 Laptop Kit Lapbc510 Firmware bc0074 All All All
Hardware Intel Nuc M15 Laptop Kit Lapbc710 - All All All
Operating System Intel Nuc M15 Laptop Kit Lapbc710 Firmware bc0074 All All All

References

ReferenceSourceLinkTags
INTEL-SA-00712 MISC www.intel.com
[BRLY-2022-016] Stack overflow vulnerability in SMI handler. MISC www.binarly.io
AMI Firmware Security Team MISC www.ami.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

LEGACY: Binarly efiXplorer team

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