Vulnerability Description
An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM callout vulnerability in the SMM driver in UsbLegacyControlSmm leads to possible arbitrary code execution in SMM and escalation of privileges. An attacker could overwrite the function pointers in the EFI_BOOT_SERVICES table before the USB SMI handler triggers. (This is not exploitable from code running in the operating system.)
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Insyde | Insydeh2O | >= 5.1, < 5.17.38 |
Related Weaknesses (CWE)
References
- https://binarly.io/advisories/BRLY-2022-022/index.htmlExploitThird Party Advisory
- https://www.insyde.com/security-pledgeVendor Advisory
- https://www.insyde.com/security-pledge/SA-2022031Vendor Advisory
- https://binarly.io/advisories/BRLY-2022-022/index.htmlExploitThird Party Advisory
- https://www.insyde.com/security-pledgeVendor Advisory
- https://www.insyde.com/security-pledge/SA-2022031Vendor Advisory
FAQ
What is CVE-2022-35408?
CVE-2022-35408 is a vulnerability with a CVSS score of 8.2 (HIGH). An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM callout vulnerability in the SMM driver in UsbLegacyControlSmm leads to possible arbitrary code execution in SMM and esc...
How severe is CVE-2022-35408?
CVE-2022-35408 has been rated HIGH with a CVSS base score of 8.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-35408?
Check the references section above for vendor advisories and patch information. Affected products include: Insyde Insydeh2O.