CVE-2022-36338
First published: Fri Sep 23 2022(Updated: )
An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM callout vulnerability in the SMM driver FwBlockServiceSmm, creating SMM, leads to arbitrary code execution. An attacker can replace the pointer to the UEFI boot service GetVariable with a pointer to malware, and then generate a software SMI.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Insyde InsydeH2O | >=5.0<=5.5 |
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Reference Links
Frequently Asked Questions
What is CVE-2022-36338?
CVE-2022-36338 is an SMM callout vulnerability in the SMM driver FwBlockServiceSmm, leading to arbitrary code execution in Insyde InsydeH2O with kernel 5.0 through 5.5.
How severe is CVE-2022-36338?
CVE-2022-36338 has a severity rating of 8.2 (high).
What software is affected by CVE-2022-36338?
Insyde InsydeH2O with kernel version 5.0 through 5.5 is affected by CVE-2022-36338.
How can an attacker exploit CVE-2022-36338?
An attacker can replace the pointer to the UEFI boot service GetVariable with a pointer to malware, leading to arbitrary code execution.
Where can I find more information about CVE-2022-36338?
You can find more information about CVE-2022-36338 at the following references: [Link 1](https://binarly.io/advisories/BRLY-2022-017/index.html), [Link 2](https://www.insyde.com/security-pledge), [Link 3](https://www.insyde.com/security-pledge/SA-2022029)
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