Strix
26.1K

CVE-2009-4419

UnknownEPSS 0.43%

Last modified

CVE-2009-4419 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.43%

34.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
IntelGm45 ChipsetAll versions
IntelPm45 Express ChipsetAll versions
IntelQ35 ChipsetAll versions
IntelQ43 Express ChipsetAll versions
IntelQ45 ChipsetAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2009-4419?
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.
How severe is CVE-2009-4419?
Severity scoring for CVE-2009-4419 is pending analysis. The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.
How do I fix CVE-2009-4419?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-4419?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST