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

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CVE-2009-4419

Severity CVSS v4.0:
Pending analysis
Type:
CWE-16 Configuration Errors
Publication date:
24/12/2009
Last modified:
09/04/2025

Description

Intel Q35, GM45, PM45 Express, Q45, and Q43 Express chipsets in the SINIT Authenticated Code Module (ACM), which allows local users to bypass the Trusted Execution Technology protection mechanism and gain privileges by modifying the MCHBAR register to point to an attacker-controlled region, which prevents the SENTER instruction from properly applying VT-d protection while an MLE is being loaded.

Impact

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:h:intel:gm45_chipset:*:*:*:*:*:*:*:*
cpe:2.3:h:intel:pm45_express_chipset:*:*:*:*:*:*:*:*
cpe:2.3:h:intel:q35_chipset:*:*:*:*:*:*:*:*
cpe:2.3:h:intel:q43_express_chipset:*:*:*:*:*:*:*:*
cpe:2.3:h:intel:q45_chipset:*:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools