CVE-2022-40261
CVSS V2 None
CVSS V3 High 8.2
Description
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
Overview
- CVE ID
- CVE-2022-40261
- Assigner
- cret@cert.org
- Vulnerability Status
- Analyzed
- Published Version
- 2022-09-20T18:15:10
- Last Modified Date
- 2022-09-26T14:29:37
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:o:intel:nuc_m15_laptop_kit_lapbc510_firmware:-:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:intel:nuc_m15_laptop_kit_lapbc510:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:intel:nuc_m15_laptop_kit_lapbc710_firmware:-:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:intel:nuc_m15_laptop_kit_lapbc710:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:ami:aptio_v:5.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- Attack Vector
- LOCAL
- Attack Compatibility
- LOW
- Privileges Required
- HIGH
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 8.2
- Base Severity
- HIGH
- Exploitability Score
- 1.5
- Impact Score
- 6
References
| Reference URL | Reference Tags |
|---|---|
| https://www.binarly.io/advisories/BRLY-2022-003 | |
| https://www.ami.com/security-center/ |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2022-40261 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-40261 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-09-20 19:00:24 | Added to TrackCVE |