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CVE-2009-4419

7.2 · HIGH

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 a…

Published Dec 24, 2009intelCWE-16EPSS 0.43%

Overview

CVE-2009-4419 is a high-severity vulnerability affecting intel gm45_chipset. It was published on December 24, 2009 and has a CVSS 2.0 base score of 7.2 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.2, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from intel. Update gm45_chipset to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refinvisiblethingslab.com/resources/misc09/Another%20TXT%20Attack.pdfRefosvdb.org/61248Refsecunia.com/advisories/37900Refsecurity-center.intel.com/advisory.aspx?intelid=INTEL-SA-00021&languageid=en-frReftheinvisiblethings.blogspot.com/2009/12/another-txt-attack.htmlRefwww.securityfocus.com/bid/37430Refwww.securitytracker.com/id?1023382Refwww.vupen.com/english/advisories/2009/3618Refexchange.xforce.ibmcloud.com/vulnerabilities/54963Refinvisiblethingslab.com/resources/misc09/Another%20TXT%20Attack.pdf

How CyberStrike helps

Frequently asked questions

What is CVE-2009-4419?

CVE-2009-4419 is a high-severity vulnerability affecting intel gm45_chipset. It was published on December 24, 2009 and has a CVSS 2.0 base score of 7.2 (HIGH).

How severe is CVE-2009-4419?

This vulnerability has a CVSS 2.0 base score of 7.2, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2009-4419?

Check the references section for vendor advisories and patches from intel. Update gm45_chipset to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2009-4419?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-4419 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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