What is CVE-2022-32470?

CVE-2022-32470 is a vulnerability discovered in Insyde InsydeH2O with kernel 5.0 through 5.5 that allows DMA attacks on the FwBlockServiceSmm shared buffer, potentially leading to corruption of SMRAM and privilege escalation.

How does CVE-2022-32470 affect InsydeH2O?

CVE-2022-32470 affects InsydeH2O versions 5.0 through 5.5 with a potential for DMA attacks on the FwBlockServiceSmm shared buffer.

What is the severity level of CVE-2022-32470?

CVE-2022-32470 has a severity level of high (7).

How can the vulnerability CVE-2022-32470 be mitigated?

The vulnerability CVE-2022-32470 can be mitigated by using Input/Output Memory Attestation (IOMA) protection mechanisms.

Where can I find more information about CVE-2022-32470?

More information about CVE-2022-32470 can be found on the Insyde Security Pledge page and the related security advisory (SA-2023002) on the Insyde website.

Vulnerability/
CVE-2022-32470

high

CWE

367

15/2/2023

3/8/2024

CVE-2022-32470

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 FwBlockServiceSmm 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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Frequently Asked Questions

What is CVE-2022-32470?
CVE-2022-32470 is a vulnerability discovered in Insyde InsydeH2O with kernel 5.0 through 5.5 that allows DMA attacks on the FwBlockServiceSmm shared buffer, potentially leading to corruption of SMRAM and privilege escalation.
How does CVE-2022-32470 affect InsydeH2O?
CVE-2022-32470 affects InsydeH2O versions 5.0 through 5.5 with a potential for DMA attacks on the FwBlockServiceSmm shared buffer.
What is the severity level of CVE-2022-32470?
CVE-2022-32470 has a severity level of high (7).
How can the vulnerability CVE-2022-32470 be mitigated?
The vulnerability CVE-2022-32470 can be mitigated by using Input/Output Memory Attestation (IOMA) protection mechanisms.
Where can I find more information about CVE-2022-32470?
More information about CVE-2022-32470 can be found on the Insyde Security Pledge page and the related security advisory (SA-2023002) on the Insyde website.

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version/insyde insydeh2o/5.4
version/insyde insydeh2o/5.5

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