Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-3971

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
22/04/2022
Last modified:
06/05/2022

Description

A potential vulnerability by a driver used during older manufacturing processes on some consumer Lenovo Notebook devices that was mistakenly included in the BIOS image could allow an attacker with elevated privileges to modify firmware protection region by modifying an NVRAM variable.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.70 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
6.70
Severity 3.x
MEDIUM
Vector 2.0
AV:L/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 4.60 MEDIUM
Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P

Attack Vector (AV): Local
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
4.60
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:lenovo:ideapad_3-14ada05_firmware:*:*:*:*:*:*:*:* e8cn33ww (excluding)
cpe:2.3:h:lenovo:ideapad_3-14ada05:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideapad_3-14ada6_firmware:*:*:*:*:*:*:*:* hbcn21ww (excluding)
cpe:2.3:h:lenovo:ideapad_3-14ada6:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideapad_3-14alc6_firmware:*:*:*:*:*:*:*:* glcn43ww (excluding)
cpe:2.3:h:lenovo:ideapad_3-14alc6:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideapad_3-14are05_firmware:*:*:*:*:*:*:*:* dzcn42ww (excluding)
cpe:2.3:h:lenovo:ideapad_3-14are05:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideapad_3-15ada6_firmware:*:*:*:*:*:*:*:* hbcn21ww (excluding)
cpe:2.3:h:lenovo:ideapad_3-15ada6:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideapad_3-15alc6_firmware:*:*:*:*:*:*:*:* glcn43ww (excluding)
cpe:2.3:h:lenovo:ideapad_3-15alc6:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideapad_3-15are05_firmware:*:*:*:*:*:*:*:* dzcn42ww (excluding)
cpe:2.3:h:lenovo:ideapad_3-15are05:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideapad_3-15igl05_firmware:*:*:*:*:*:*:*:* dvcn23ww (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools