CVE Vulnerability

CVE-2022-40250

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: SmmSmbiosElog SHA256: 3a8acb4f9bddccb19ec3b22b22ad97963711550f76b27b606461cd5073a93b59 Module GUID: 8e61fd6b-7a8b-404f-b83f-aa90a47cabdf This issue affects: AMI Aptio 5.x. This issue affects: AMI Aptio 5.x.

8.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 2 / Impact : 6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References
Link Resource
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00712.html Not Applicable Third Party Advisory
https://www.binarly.io/advisories/BRLY-2022-016 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 : 2022-09-24 02:38

NVD link : CVE-2022-40250

Mitre link : CVE-2022-40250

Products Affected
No products.
CWE
CWE-787