CVE-2023-30633
(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.
Does this matter?
Lower severity and a low EPSS score (0.21%). Track it; it rarely justifies an emergency change on its own.
Description
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).
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
- EPSS
- 0.21% probability · 12th percentile
- CISA KEV
- Not listed
- Affected
- insyde/insydeh2o
- Source
- cve@mitre.org
References
- https://www.insyde.com/security-pledgeVendor Advisory
- https://www.insyde.com/security-pledge/SA-2023045Vendor Advisory
- https://www.insyde.com/security-pledgeVendor Advisory
- https://www.insyde.com/security-pledge/SA-2023045Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.