Vulnerability Description
An issue was discovered in Kernel 5.x in Insyde InsydeH2O, affecting HddPassword. Software SMI services that use the Communicate() function of the EFI_SMM_COMMUNICATION_PROTOCOL do not check whether the address of the buffer is valid, which allows use of SMRAM, MMIO, or OS kernel addresses.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Insyde | Insydeh2O | >= 5.1, < 5.16.23 |
| Netapp | Fas\/Aff Bios | - |
| Siemens | Ruggedcom Ape1808 Firmware | - |
| Siemens | Ruggedcom Ape1808 | - |
| Siemens | Simatic Field Pg M5 Firmware | - |
| Siemens | Simatic Field Pg M5 | - |
| Siemens | Simatic Ipc127E Firmware | - |
| Siemens | Simatic Ipc127E | - |
| Siemens | Simatic Itp1000 Firmware | - |
| Siemens | Simatic Itp1000 | - |
| Siemens | Simatic Ipc277G Firmware | - |
| Siemens | Simatic Ipc277G | - |
| Siemens | Simatic Ipc227G Firmware | - |
| Siemens | Simatic Ipc227G | - |
| Siemens | Simatic Ipc327G Firmware | - |
| Siemens | Simatic Ipc327G | - |
| Siemens | Simatic Ipc377G Firmware | - |
| Siemens | Simatic Ipc377G | - |
| Siemens | Simatic Ipc427E Firmware | - |
| Siemens | Simatic Ipc427E | - |
Related Weaknesses (CWE)
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdfThird Party Advisory
- https://security.netapp.com/advisory/ntap-20220222-0004/Third Party Advisory
- https://www.insyde.com/security-pledgeVendor Advisory
- https://www.insyde.com/security-pledge/SA-2022014Vendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdfThird Party Advisory
- https://security.netapp.com/advisory/ntap-20220222-0004/Third Party Advisory
- https://www.insyde.com/security-pledgeVendor Advisory
- https://www.insyde.com/security-pledge/SA-2022014Vendor Advisory
- https://www.kb.cert.org/vuls/id/796611
FAQ
What is CVE-2021-33625?
CVE-2021-33625 is a vulnerability with a CVSS score of 7.5 (HIGH). An issue was discovered in Kernel 5.x in Insyde InsydeH2O, affecting HddPassword. Software SMI services that use the Communicate() function of the EFI_SMM_COMMUNICATION_PROTOCOL do not check whether t...
How severe is CVE-2021-33625?
CVE-2021-33625 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-33625?
Check the references section above for vendor advisories and patch information. Affected products include: Insyde Insydeh2O, Netapp Fas\/Aff Bios, Siemens Ruggedcom Ape1808 Firmware, Siemens Ruggedcom Ape1808, Siemens Simatic Field Pg M5 Firmware.