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).
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Insydeh2o | Insyde | 5.12.09.0074 (including) | 5.12.09.0074 (including) |
| Insydeh2o | Insyde | 5.23.04.0045 (including) | 5.23.04.0045 (including) |
| Insydeh2o | Insyde | 5.23.45.0023 (including) | 5.23.45.0023 (including) |
| Insydeh2o | Insyde | 5.33.15.0034 (including) | 5.33.15.0034 (including) |
| Insydeh2o | Insyde | 5.34.03.0029 (including) | 5.34.03.0029 (including) |
| Insydeh2o | Insyde | 5.42.03.0010 (including) | 5.42.03.0010 (including) |
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
- https://security.netapp.com/advisory/ntap-20220222-0005/
- https://www.insyde.com/products
- https://www.insyde.com/security-pledge
- https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
- https://security.netapp.com/advisory/ntap-20220222-0005/
- https://www.insyde.com/products
- https://www.insyde.com/security-pledge
- https://www.kb.cert.org/vuls/id/796611