CVE-2022-40261

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Summary

CVECVE-2022-40261
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-09-20 18:15:00 UTC
Updated2022-09-26 14:29:00 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: OverClockSmiHandler SHA256: a204699576e1a48ce915d9d9423380c8e4c197003baf9d17e6504f0265f3039c Module GUID: 4698C2BD-A903-410E-AD1F-5EEF3A1AE422

Risk And Classification

Problem Types: CWE-120

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 - All All All
Hardware Intel Nuc M15 Laptop Kit Lapbc710 - All All All
Operating System Intel Nuc M15 Laptop Kit Lapbc710 Firmware - All All All

References

ReferenceSourceLinkTags
[BRLY-2022-003] SMM memory corruption vulnerability in SMM driver on Intel platforms. 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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