CVE-2021-41839 HIGH

Published: 2022-02-03 | Last Modified: 2026-08-11 | Status: Modified

Description

An issue was discovered in NvmExpressDxe in the kernel 5.0 through 5.5 in Insyde InsydeH2O. Because of an Untrusted Pointer Dereference that causes SMM memory corruption, an attacker may be able to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.

Additional Descriptions (1)

Se ha descubierto un problema en NvmExpressDxe en el kernel versión 5.0 hasta la versión 5.5 de InsydeH2O. Debido a una desviación de puntero no fiable que provoca la corrupción de la memoria de SMM, un atacante podría ser capaz de escribir datos fijos o predecibles en la SMRAM. La explotación de este problema podría llevar a escalar privilegios a SMM

CVSS Metrics

Base Score: 8.2 (HIGH)

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Attack Vector	LOCAL
Attack Complexity	LOW
Privileges Required	HIGH
User Interaction	NONE
Scope	CHANGED
Confidentiality Impact	HIGH
Integrity Impact	HIGH
Availability Impact	HIGH

Source: [email protected]

Type: Primary

Exploitability Score: 1.5

Impact Score: 6.0

Base Score: 4.6 (MEDIUM)

AV:L/AC:L/Au:N/C:P/I:P/A:P

Access Vector	LOCAL
Access Complexity	LOW
Authentication	NONE
Confidentiality Impact	PARTIAL
Integrity Impact	PARTIAL
Availability Impact	PARTIAL

Source: [email protected]

Type: Primary

Exploitability Score: 3.9

Impact Score: 6.4

Weaknesses

Source	Type	Description
[email protected]	Primary	en CWE-119

Affected Products

Vendor	Product	Version	Update	Type
insyde	insydeh2o	*	<built-in method update of dict object at 0x72efbe6b2040>	Application
insyde	insydeh2o	*	<built-in method update of dict object at 0x72f03a95d600>	Application
insyde	insydeh2o	*	<built-in method update of dict object at 0x72f03a95ddc0>	Application
insyde	insydeh2o	*	<built-in method update of dict object at 0x72f03a95fd40>	Application
insyde	insydeh2o	*	<built-in method update of dict object at 0x72f05a0cb280>	Application

Affected Configurations

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:a:insyde:insydeh2o::::::::`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:a:insyde:insydeh2o::::::::`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:a:insyde:insydeh2o::::::::`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:a:insyde:insydeh2o::::::::`

Operator: OR

Vulnerable	CPE
Yes	`cpe:2.3:a:insyde:insydeh2o::::::::`

References

https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
Source: [email protected]

Third Party Advisory
https://security.netapp.com/advisory/ntap-20220217-0016/
Source: [email protected]

Third Party Advisory
https://www.insyde.com/security-pledge
Source: [email protected]

Vendor Advisory
https://www.insyde.com/security-pledge/SA-2022020
Source: [email protected]

Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory
https://security.netapp.com/advisory/ntap-20220217-0016/
Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory
https://www.insyde.com/security-pledge
Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory
https://www.insyde.com/security-pledge/SA-2022020
Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory
https://www.kb.cert.org/vuls/id/796611
Source: af854a3a-2127-422b-91ae-364da2661108
https://cert-portal.siemens.com/productcert/html/ssa-306654.html
Source: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e