CVE-2022-40261

Published on: Not Yet Published

Last Modified on: 09/26/2022 02:29:00 PM UTC

CVSS:3.1/AV:L/AC:L/PR:H/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: OverClockSmiHandler SHA256: a204699576e1a48ce915d9d9423380c8e4c197003baf9d17e6504f0265f3039c Module GUID: 4698C2BD-A903-410E-AD1F-5EEF3A1AE422

  • CVE-2022-40261 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: 8.2 - HIGH

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

CVE References

Description Tags Link
[BRLY-2022-003] SMM memory corruption vulnerability in SMM driver on Intel platforms. www.binarly.io
text/html
URL Logo MISC www.binarly.io/advisories/BRLY-2022-003
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 Firmware-AllAllAll
Hardware Device InfoIntelNuc M15 Laptop Kit Lapbc710-AllAllAll
Operating
System
IntelNuc M15 Laptop Kit Lapbc710 Firmware-AllAllAll
  • 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:-:*:*:*:*:*:*:*:
  • cpe:2.3:h:intel:nuc_m15_laptop_kit_lapbc710:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:intel:nuc_m15_laptop_kit_lapbc710_firmware:-:*:*:*:*:*:*:*:

Discovery Credit

Binarly efiXplorer team

Social Mentions

Source Title Posted (UTC)
Twitter Icon @Robo_Alerts Potentially Critical CVE Detected! CVE-2022-40261 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-2022-40261 2022-09-20 18:38:56
© CVE.report 2022 Twitter Nitter Twitter Viewer |

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