CVE-2022-40250

Published on: Not Yet Published

Last Modified on: 09/24/2022 02:38:00 AM UTC

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

Certain versions of Aptio V from Ami contain the following vulnerability:

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.

  • CVE-2022-40250 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as HIGH severity.
  • Affected Vendor/Software: URL Logo AMI - Aptio version 5.x

CVSS3 Score: 8.8 - HIGH

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
LOCAL LOW LOW NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
CHANGED HIGH HIGH HIGH

CVE References

Description Tags Link
INTEL-SA-00712 www.intel.com
text/html
URL Logo MISC www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00712.html
[BRLY-2022-016] Stack overflow vulnerability in SMI handler. www.binarly.io
text/html
URL Logo MISC www.binarly.io/advisories/BRLY-2022-016
AMI Firmware Security Team www.ami.com
text/html
URL Logo MISC www.ami.com/security-center/

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System
AmiAptio V5.0AllAllAll
Hardware Device InfoIntelNuc M15 Laptop Kit Lapbc510-AllAllAll
Operating
System
IntelNuc M15 Laptop Kit Lapbc510 Firmwarebc0074AllAllAll
Hardware Device InfoIntelNuc M15 Laptop Kit Lapbc710-AllAllAll
Operating
System
IntelNuc M15 Laptop Kit Lapbc710 Firmwarebc0074AllAllAll
  • cpe:2.3:o:ami:aptio_v:5.0:*:*:*:*:*:*:*:
  • cpe:2.3:h:intel:nuc_m15_laptop_kit_lapbc510:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:intel:nuc_m15_laptop_kit_lapbc510_firmware:bc0074:*:*:*:*:*:*:*:
  • cpe:2.3:h:intel:nuc_m15_laptop_kit_lapbc710:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:intel:nuc_m15_laptop_kit_lapbc710_firmware:bc0074:*:*:*:*:*:*:*:

Discovery Credit

Binarly efiXplorer team

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2022-40250 : An attacker can exploit this vulnerability to elevate privileges from ring 0 to ring -2, execute a… twitter.com/i/web/status/1… 2022-09-20 17:38:34
Twitter Icon @Robo_Alerts Potentially Critical CVE Detected! CVE-2022-40250 An attacker can exploit this vulnerability to elevate privileges… twitter.com/i/web/status/1… 2022-09-20 18:55:55
Reddit Logo Icon /r/netcve CVE-2022-40250 2022-09-20 18:38:56
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