GHSA-f8pw-77pg-8gv6HighCVSS 7.5
A vulnerability exists in System Management Interrupt (SWSMI) handler of InsydeH2O UEFI Firmware...
🔗 CVE IDs covered (1)
📋 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 (8)
- https://nvd.nist.gov/vuln/detail/CVE-2020-5953
- 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.kb.cert.org/vuls/id/796611
- https://cert-portal.siemens.com/productcert/html/ssa-306654.html
- https://github.com/advisories/GHSA-f8pw-77pg-8gv6