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CertccCVE-2022-40250

HistorySep 20, 2022 - 6:15 p.m.

CVE-2022-40250

2022-09-2018:15:10

CWE-787

CWE-121

certcc

web.nvd.nist.gov

cve-2022-40250

privilege escalation

smm

bios firmware

implant

security

vulnerability

uefi

firmware

exploit

ami aptio 5.x

nvd

CVSS3

8.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

AI Score

8.7

Confidence

High

EPSS

0.001

Percentile

44.6%

JSON

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.

Affected configurations

Nvd

Node

intelnuc_m15_laptop_kit_lapbc510_firmwareMatchbc0074

AND

intelnuc_m15_laptop_kit_lapbc510Match-

Node

intelnuc_m15_laptop_kit_lapbc710_firmwareMatchbc0074

AND

intelnuc_m15_laptop_kit_lapbc710Match-

Node

amiaptio_vMatch5.0

VendorProductVersionCPE
intelnuc_m15_laptop_kit_lapbc510_firmwarebc0074cpe:2.3:o:intel:nuc_m15_laptop_kit_lapbc510_firmware:bc0074:*:*:*:*:*:*:*
intelnuc_m15_laptop_kit_lapbc510-cpe:2.3:h:intel:nuc_m15_laptop_kit_lapbc510:-:*:*:*:*:*:*:*
intelnuc_m15_laptop_kit_lapbc710_firmwarebc0074cpe:2.3:o:intel:nuc_m15_laptop_kit_lapbc710_firmware:bc0074:*:*:*:*:*:*:*
intelnuc_m15_laptop_kit_lapbc710-cpe:2.3:h:intel:nuc_m15_laptop_kit_lapbc710:-:*:*:*:*:*:*:*
amiaptio_v5.0cpe:2.3:o:ami:aptio_v:5.0:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
intel	nuc_m15_laptop_kit_lapbc510_firmware	bc0074	cpe:2.3:o:intel:nuc_m15_laptop_kit_lapbc510_firmware:bc0074:::::::*
intel	nuc_m15_laptop_kit_lapbc510	-	cpe:2.3:h:intel:nuc_m15_laptop_kit_lapbc510:-:::::::*
intel	nuc_m15_laptop_kit_lapbc710_firmware	bc0074	cpe:2.3:o:intel:nuc_m15_laptop_kit_lapbc710_firmware:bc0074:::::::*
intel	nuc_m15_laptop_kit_lapbc710	-	cpe:2.3:h:intel:nuc_m15_laptop_kit_lapbc710:-:::::::*
ami	aptio_v	5.0	cpe:2.3:o:ami:aptio_v:5.0:::::::*

CNA Affected

[
  {
    "product": "Aptio",
    "vendor": "AMI",
    "versions": [
      {
        "status": "affected",
        "version": "5.x"
      }
    ]
  }
]

References

www.ami.com/security-center/

www.binarly.io/advisories/BRLY-2022-016

www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00712.html

Social References

CVSS3

8.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

AI Score

8.7

Confidence

High

EPSS

0.001

Percentile

44.6%

JSON

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