High severity · published Feb 3, 2022
CVE-2021-33625
An issue was discovered in Kernel 5.x in Insyde InsydeH2O, affecting HddPassword
7.5
CVSS
0.3%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FB
Fas/aff Bios · Netapp
All versions, or not specified · source: NVD
IN
Insydeh2o · Insyde
5.1 before 5.16.23; 5.2 before 5.26.23; 5.3 before 5.35.23; 5.4 before 5.43.22; 5.5 before 5.51.22 · source: NVD
RA
Ruggedcom Ape1808 Firmware · Siemens
All versions, or not specified · source: NVD
SF
Simatic Field PG M5 Firmware · Siemens
All versions, or not specified · source: NVD
SF
Simatic Field PG M6 Firmware · Siemens
All versions, or not specified · source: NVD
SI
Simatic Ipc127e Firmware · Siemens
All versions, or not specified · source: NVD
SI
Simatic Ipc227g Firmware · Siemens
All versions, or not specified · source: NVD
SI
Simatic Ipc277g Firmware · Siemens
All versions, or not specified · source: NVD
SI
Simatic Ipc327g Firmware · Siemens
All versions, or not specified · source: NVD
SI
Simatic Ipc377g Firmware · Siemens
All versions, or not specified · source: NVD
SI
Simatic Ipc427e Firmware · Siemens
All versions, or not specified · source: NVD
SI
Simatic Ipc477e Firmware · Siemens
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-33625
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-33625
Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
Third Party Advisory
https://security.netapp.com/advisory/ntap-20220222-0004/
Vendor Advisory
https://www.insyde.com/security-pledge
Vendor Advisory
https://www.insyde.com/security-pledge/SA-2022014
www.kb.cert.org
https://www.kb.cert.org/vuls/id/796611
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-306654.html
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