Vulnerability Description
An issue was discovered in SystemFirmwareManagementRuntimeDxe in Insyde InsydeH2O with kernel 5.0 through 5.5. The implementation of the GetImage method retrieves the value of a runtime variable named GetImageProgress, and later uses this value as a function pointer. This variable is wiped out by the same module near the end of the function. By setting this UEFI variable from the OS to point into custom code, an attacker could achieve arbitrary code execution in the DXE phase, before several chipset locks are set.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Insyde | Insydeh2O | >= 5.2, < 5.2.05.28.22 |
Related Weaknesses (CWE)
References
- https://www.insyde.com/security-pledgeVendor Advisory
- https://www.insyde.com/security-pledge/SA-2023052Vendor Advisory
- https://www.insyde.com/security-pledgeVendor Advisory
- https://www.insyde.com/security-pledge/SA-2023052Vendor Advisory
FAQ
What is CVE-2023-34195?
CVE-2023-34195 is a vulnerability with a CVSS score of 7.8 (HIGH). An issue was discovered in SystemFirmwareManagementRuntimeDxe in Insyde InsydeH2O with kernel 5.0 through 5.5. The implementation of the GetImage method retrieves the value of a runtime variable named...
How severe is CVE-2023-34195?
CVE-2023-34195 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-34195?
Check the references section above for vendor advisories and patch information. Affected products include: Insyde Insydeh2O.