Home/CVE/An issue was discovered in Kernel 5.x in Insyde InsydeH2O, affecting HddPassword. Software SMI services that use the Com
CVE

CVE-2021-33625

An issue was discovered in Kernel 5.x in Insyde InsydeH2O, affecting HddPassword. Software SMI services that use the Com

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.

HIGH · CVSS 7.5 EPSS 0.00063
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
▤

Affected Products & Versions

22
insyde insydeh2o>= 5.1 and < 5.16.23
insyde insydeh2o>= 5.2 and < 5.26.23
insyde insydeh2o>= 5.3 and < 5.35.23
insyde insydeh2o>= 5.4 and < 5.43.22
insyde insydeh2o>= 5.5 and < 5.51.22
netapp fas\/aff biosall versions
siemens ruggedcom ape1808 firmwareall versions
siemens simatic field pg m5 firmwareall versions
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD03 Feb 2022 · 02:15 AM
CVSS VectorCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
⚑

Vendor Advisories

1
siemens-csafSSA-306654
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
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
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