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CVE-2009-4419

N/A

Published: December 24, 2009 at 05:00 PM UTC

Updated: June 16, 2026 at 11:13 PM UTC

5 products affected across 1 vendorQ35 ChipsetGM45 ChipsetPM45 Express Chipset

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Severity

N/A

Exploit prediction

EPSS 0.4%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

GM45 Chipset · Intel

95%

All versions

PM45 Express Chipset · Intel

95%

All versions

Q35 Chipset · Intel

95%

All versions

Q43 Express Chipset · Intel

95%

All versions

Q45 Chipset · Intel

95%

All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (9)

x_refsource_MISC

Source: [email protected]

http://invisiblethingslab.com/resources/misc09/Another%20TXT%20Attack.pdf

VDB Entryx_refsource_OSVDB

Source: [email protected]

http://osvdb.org/61248

Third Party Advisoryx_refsource_SECUNIAVendor Advisory

Source: [email protected]

http://secunia.com/advisories/37900

x_refsource_CONFIRMVendor Advisory

Source: [email protected]

http://security-center.intel.com/advisory.aspx?intelid=INTEL-SA-00021&languageid=en-fr

x_refsource_MISC

Source: [email protected]

http://theinvisiblethings.blogspot.com/2009/12/another-txt-attack.html

VDB Entryx_refsource_BID

Source: [email protected]

http://www.securityfocus.com/bid/37430

VDB Entryx_refsource_SECTRACK

Source: [email protected]

http://www.securitytracker.com/id?1023382

VDB Entryx_refsource_VUPENVendor Advisory

Source: [email protected]

http://www.vupen.com/english/advisories/2009/3618

CVSS

7.2HIGH[email protected]

Confidentiality: COMPLETE
Integrity: COMPLETE
Availability: COMPLETE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-16

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