CVE Vulnerability

CVE-2022-40261

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

8.2 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1.5 / Impact : 6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References
Link Resource
https://www.binarly.io/advisories/BRLY-2022-003 Exploit Third Party Advisory
https://www.ami.com/security-center/ Vendor Advisory
Configurations

Configuration 1

cpe:2.3:o:ami:aptio_v:5.0:*:*:*:*:*:*:*
Information

Published : 2022-09-20 06:15

Updated : 2022-09-26 02:29

NVD link : CVE-2022-40261

Mitre link : CVE-2022-40261

Products Affected
No products.
CWE
CWE-120