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).
Published 2023-10-19 20:15:09
Updated 2023-10-31 18:49:07
Source MITRE
View at NVD,   CVE.org

Products affected by CVE-2023-30633

Exploit prediction scoring system (EPSS) score for CVE-2023-30633

0.05%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 19 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-30633

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.3
MEDIUM CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
0.9
4.0
NIST

References for CVE-2023-30633

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