CVE-2009-4419

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Summary

CVECVE-2009-4419
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2009-12-24 17:30:00 UTC
Updated2026-04-23 00:35:47 UTC
DescriptionIntel 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.

Risk And Classification

Primary CVSS: v2.0 7.2 from [email protected]

AV:L/AC:L/Au:N/C:C/I:C/A:C

Problem Types: CWE-16 | n/a

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:L/AC:L/Au:N/C:C/I:C/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Intel Gm45 Chipset All All All All
Hardware Intel Pm45 Express Chipset All All All All
Hardware Intel Q35 Chipset All All All All
Hardware Intel Q43 Express Chipset All All All All
Hardware Intel Q45 Chipset All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
invisiblethingslab.com/resources/misc09/Another%20TXT%20Attack.pdf af854a3a-2127-422b-91ae-364da2661108 invisiblethingslab.com
osvdb.org/61248 af854a3a-2127-422b-91ae-364da2661108 osvdb.org
Intel BIOS SINIT Authenticated Code Module Local Privilege Escalation Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
The Invisible Things Lab's blog: Another TXT Attack af854a3a-2127-422b-91ae-364da2661108 theinvisiblethings.blogspot.com
Intel® Product Security Center af854a3a-2127-422b-91ae-364da2661108 security-center.intel.com Vendor Advisory
SecurityTracker.com Archives - Intel SINIT Authenticated Code Module Flaw Lets Local Users Gain Elevated Privileges af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
Intel Trusted Execution Technology SINIT Security Bypass - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Vendor Advisory
IBM X-Force Exchange af854a3a-2127-422b-91ae-364da2661108 exchange.xforce.ibmcloud.com
Webmail : Solution de messagerie professionnelle - OVHcloud- OVH af854a3a-2127-422b-91ae-364da2661108 www.vupen.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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