Nuc M15 Laptop Kit Lapbc510 Firmware
CVE-2022-40261
HIGH
Severity by source
AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionNVD
An 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
AnalysisAI
An 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). Rated high severity (CVSS 8.2), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.
Technical ContextAI
This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. An 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 Affected products include: Intel Nuc M15 Laptop Kit Lapbc510 Firmware, Intel Nuc M15 Laptop Kit Lapbc710 Firmware, Ami Aptio V.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.
An attacker can exploit this vulnerability to elevate privileges from ring 0 to ring -2, execute arbitrary code in Syste
A potential attacker can execute an arbitrary code at the time of the PEI phase and influence the subsequent boot stages
A potential attacker can write one byte by arbitrary address at the time of the PEI phase (only during S3 resume boot mo
Improper access control for some Intel(R) NUC BIOS firmware may allow a privileged user to potentially enable escalation
Improper buffer restrictions in BIOS firmware for some Intel(R) NUC M15 Laptop Kits before version BCTGL357.0074 may all
Improper access control in system firmware for some Intel(R) NUCs may allow a privileged user to potentially enabl
Improper buffer restrictions in system firmware for some Intel(R) NUCs may allow a privileged user to potentially enable
Out-of-bounds write in firmware for some Intel(R) NUCs may allow an authenticated user to potentially enable denial of s
Insecure inherited permissions in some Intel(R) HID Event Filter software installers before version 2.2.2.1 may allow an
Non-Transparent Sharing of Microarchitectural Resources in some Intel(R) NUC BIOS firmware may allow a privileged user t
Improper initialization in some Intel(R) NUC 13 Extreme Compute Element, Intel(R) NUC 13 Extreme Kit, Intel(R) NUC 11 Pe
Same weakness CWE-120 – Classic Buffer Overflow
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External POC / Exploit Code
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