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

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CVE-2021-21572

Severity CVSS v4.0:
Pending analysis
Type:
CWE-787 Out-of-bounds Write
Publication date:
24/06/2021
Last modified:
30/06/2021

Description

Dell BIOSConnect feature contains a buffer overflow vulnerability. An authenticated malicious admin user with local access to the system may potentially exploit this vulnerability to run arbitrary code and bypass UEFI restrictions.

Impact

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

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

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

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:L/AC:M/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 6.90 MEDIUM
Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C

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

Base Score 2.0
6.90
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:dell:alienware_m15_r6_firmware:*:*:*:*:*:*:*:* 1.3.3 (excluding)
cpe:2.3:h:dell:alienware_m15_r6:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:chengming_3990_firmware:*:*:*:*:*:*:*:* 1.4.1 (excluding)
cpe:2.3:h:dell:chengming_3990:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:chengming_3991_firmware:*:*:*:*:*:*:*:* 1.4.1 (excluding)
cpe:2.3:h:dell:chengming_3991:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:g15_5510_firmware:*:*:*:*:*:*:*:* 1.4.0 (excluding)
cpe:2.3:h:dell:g15_5510:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:g15_5511_firmware:*:*:*:*:*:*:*:* 1.3.3 (excluding)
cpe:2.3:h:dell:g15_5511:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:g3_3500_firmware:*:*:*:*:*:*:*:* 1.9.0 (including)
cpe:2.3:h:dell:g3_3500:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:g5_5500_firmware:*:*:*:*:*:*:*:* 1.9.0 (excluding)
cpe:2.3:h:dell:g5_5500:-:*:*:*:*:*:*:*
cpe:2.3:o:dell:g7_7500_firmware:*:*:*:*:*:*:*:* 1.9.0 (excluding)

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


References to Advisories, Solutions, and Tools