Vulnerability Details : CVE-2021-41838
An issue was discovered in SdHostDriver in the kernel 5.0 through 5.5 in Insyde InsydeH2O. There is an SMM callout that allows an attacker to access the System Management Mode and execute arbitrary code. This occurs because of a Numeric Range Comparison Without a Minimum Check.
Vulnerability category: OverflowExecute code
Products affected by CVE-2021-41838
- cpe:2.3:o:siemens:simatic_ipc427e_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc477e_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_itp1000_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_field_pg_m5_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_field_pg_m6_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc127e_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc227g_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc277g_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc327g_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc377g_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc627e_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc647e_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc677e_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc847e_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
- cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
- cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
- cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
- cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-41838
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 18 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-41838
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.2
|
HIGH | AV:L/AC:L/Au:N/C:C/I:C/A:C |
3.9
|
10.0
|
NIST | |
|
8.2
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
1.5
|
6.0
|
NIST |
CWE ids for CVE-2021-41838
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-41838
-
https://www.insyde.com/security-pledge/SA-2022023
Insyde Security Advisory 2022023 | Insyde SoftwareVendor Advisory
-
https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
Third Party Advisory
-
https://security.netapp.com/advisory/ntap-20220222-0001/
CVE-2021-41838 InsydeH20 Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://www.insyde.com/security-pledge
Insyde's Security Pledge | Insyde SoftwareVendor Advisory
Jump to