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

Go to Calendar     Go to Press Room     Go to Newsletters subscription

Search

CVE-2021-21571

Severity CVSS v4.0:
Pending analysis
Type:
CWE-295 Improper Certificate Validation
Publication date:
24/06/2021
Last modified:
02/07/2021

Description

Dell UEFI BIOS https stack leveraged by the Dell BIOSConnect feature and Dell HTTPS Boot feature contains an improper certificate validation vulnerability. A remote unauthenticated attacker may exploit this vulnerability using a person-in-the-middle attack which may lead to a denial of service and payload tampering.

Impact

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

Base Score: 6.50 MEDIUM
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

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

Base Score 3.x
6.50
Severity 3.x
MEDIUM
Vector 2.0
AV:N/AC:M/Au:N/C:N/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.80 MEDIUM
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:P

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

Base Score 2.0
5.80
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 (excluding)
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