CVE-2022-32473
First published: Wed Feb 15 2023(Updated: )
An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. DMA attacks on the HddPassword shared buffer used by SMM and non-SMM code could cause TOCTOU race-condition issues that could lead to corruption of SMRAM and escalation of privileges. This attack can be mitigated using IOMMU protection for the ACPI runtime memory used for the command buffer. This attack can be mitigated by copying the firmware block services data to SMRAM before checking it.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Insyde InsydeH2O | >=5.0<5.2.05.27.27 | |
| Insyde InsydeH2O | >=5.3<5.3.05.36.27 | |
| Insyde InsydeH2O | >=5.4<5.4.05.44.27 | |
| Insyde InsydeH2O | >=5.5<5.5.05.52.27 |
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Reference Links
Frequently Asked Questions
What is CVE-2022-32473?
CVE-2022-32473 is an issue discovered in Insyde InsydeH2O with kernel 5.0 through 5.5 that allows for DMA attacks on the HddPassword shared buffer.
What is the severity of CVE-2022-32473?
CVE-2022-32473 has a severity level of high.
How does CVE-2022-32473 impact system security?
CVE-2022-32473 can lead to corruption of SMRAM and escalation of privileges, posing a significant risk to system security.
How can I mitigate the risk of CVE-2022-32473?
The risk of CVE-2022-32473 can be mitigated by using IOMMU protection.
Where can I find more information about CVE-2022-32473?
More information about CVE-2022-32473 can be found on Insyde's security pledge page.
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