CVE-2023-30633
First published: Thu Oct 19 2023(Updated: )
An issue was discovered in TrEEConfigDriver in Insyde InsydeH2O with kernel 5.0 through 5.5. It can report false TPM PCR values, and thus mask malware activity. Devices use Platform Configuration Registers (PCRs) to record information about device and software configuration to ensure that the boot process is secure. (For example, Windows uses these PCR measurements to determine device health.) A vulnerable device can masquerade as a healthy device by extending arbitrary values into Platform Configuration Register (PCR) banks. This requires physical access to a target victim's device, or compromise of user credentials for a device. This issue is similar to CVE-2021-42299 (on Surface Pro devices).
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Insyde InsydeH2O | >=5.3<5.3.05.37.17 | |
| Insyde InsydeH2O | >=5.4<5.4.05.45.17 | |
| Insyde InsydeH2O | >=5.5<5.5.05.53.17 | |
| Insyde InsydeH2O | >=5.6<5.6.05.60.17 | |
| Insyde InsydeH2O | =5.2 |
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Reference Links
Frequently Asked Questions
What is CVE-2023-30633?
CVE-2023-30633 is an issue discovered in TrEEConfigDriver in Insyde InsydeH2O with kernel versions 5.0 through 5.5 that can report false TPM PCR values, potentially masking malware activity.
Which devices are affected by CVE-2023-30633?
Devices using Insyde InsydeH2O with kernel versions 5.0 through 5.5 are affected by CVE-2023-30633.
How does CVE-2023-30633 impact device security?
CVE-2023-30633 can mask malware activity by reporting false TPM PCR values, potentially compromising device security.
What is the severity level of CVE-2023-30633?
CVE-2023-30633 has a severity level of medium, with a severity value of 5.3.
How can I fix CVE-2023-30633?
To fix CVE-2023-30633, it is recommended to update the affected Insyde InsydeH2O firmware to a version that addresses the vulnerability. Please refer to the vendor's security advisory for specific instructions.
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