Detections
Analytics
CVE-2020-5953
high
Description
A vulnerability exists in System Management Interrupt (SWSMI) handler of InsydeH2O UEFI Firmware code located in SWSMI handler that dereferences gRT (EFI_RUNTIME_SERVICES) pointer to call a GetVariable service, which is located outside of SMRAM. This can result in code execution in SMM (escalating privilege from ring 0 to ring -2).
References
https://www.insyde.com/security-pledge
https://www.insyde.com/products
https://security.netapp.com/advisory/ntap-20220222-0005/
https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf