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

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CVE-2023-27373

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
07/08/2023
Last modified:
07/03/2025

Description

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. Due to insufficient input validation, an attacker can tamper with a runtime-accessible EFI variable to cause a dynamic BAR setting to overlap SMRAM.

Impact

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

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

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

Base Score 3.x
5.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:insyde:insydeh2o:5.0:*:*:*:*:*:*:*
cpe:2.3:a:insyde:insydeh2o:5.1:*:*:*:*:*:*:*
cpe:2.3:a:insyde:insydeh2o:5.2:*:*:*:*:*:*:*
cpe:2.3:a:insyde:insydeh2o:5.3:*:*:*:*:*:*:*
cpe:2.3:a:insyde:insydeh2o:5.4:*:*:*:*:*:*:*
cpe:2.3:a:insyde:insydeh2o:5.5:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools