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

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CVE-2021-36283

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
28/09/2021
Last modified:
04/10/2021

Description

Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user may potentially exploit this vulnerability by using an SMI to gain arbitrary code execution in SMRAM.

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:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.20 HIGH
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

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

Base Score 2.0
7.20
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:dell:chengming_3990_firmware:*:*:*:*:*:*:*:* 1.3.1 (excluding)
cpe:2.3:h:dell:chengming_3990:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:chengming_3991_firmware:*:*:*:*:*:*:*:* 1.3.1 (excluding)
cpe:2.3:h:dell:chengming_3991:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:g3_15_3500_firmware:*:*:*:*:*:*:*:* 1.7.1 (excluding)
cpe:2.3:h:dell:g3_15_3500:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:g3_15_3590_firmware:*:*:*:*:*:*:*:* 1.12.0 (excluding)
cpe:2.3:h:dell:g3_15_3590:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:g3_15_5500_firmware:*:*:*:*:*:*:*:* 1.7.1 (excluding)
cpe:2.3:h:dell:g3_15_5500:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:inspiron_3493_firmware:*:*:*:*:*:*:*:* 1.12.0 (excluding)
cpe:2.3:h:dell:inspiron_3493:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:inspiron_3501_firmware:*:*:*:*:*:*:*:* 1.1.0 (excluding)
cpe:2.3:h:dell:inspiron_3501:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:inspiron_3593_firmware:*:*:*:*:*:*:*:* 1.12.0 (excluding)

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


References to Advisories, Solutions, and Tools