CVE-2021-43323

Severity Score

8.2

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered in UsbCoreDxe in Insyde InsydeH2O with kernel 5.5 before 05.51.45, 5.4 before 05.43.45, 5.3 before 05.35.45, 5.2 before 05.26.45, 5.1 before 05.16.45, and 5.0 before 05.08.45. An SMM callout vulnerability allows an attacker to hijack execution flow of code running in System Management Mode. Exploiting this issue could lead to escalating privileges to SMM.

Se ha detectado un problema en UsbCoreDxe en InsydeH2O con el kernel versiones 5.5 anteriores a 05.51.45, versiones 5.4 anteriores a 05.43.45, versiones 5.3 anteriores a 05.35.45, versiones 5.2 anteriores a 05.26.45, versiones 5.1 anteriores a 05.16.45 y versiones 5.0 anteriores a 05.08.45. Una vulnerabilidad en la llamada SMM permite a un atacante secuestrar el flujo de ejecución del código que es ejecutado en el modo de administración del sistema. Una explotación de este problema podría conllevar a una escalada de privilegios en el SMM

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-11-03 CVE Reserved
2022-02-03 CVE Published
2023-09-24 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (3)

URL	Tag	Source
https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf	Third Party Advisory
https://security.netapp.com/advisory/ntap-20220217-0013	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.insyde.com/security-pledge	2022-03-29

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Insyde Search vendor "Insyde"		Insydeh2o Search vendor "Insyde" for product "Insydeh2o"				>= 5.1 < 5.16.45 Search vendor "Insyde" for product "Insydeh2o" and version " >= 5.1 < 5.16.45"		-		Affected
Insyde Search vendor "Insyde"		Insydeh2o Search vendor "Insyde" for product "Insydeh2o"				>= 5.2 < 5.26.45 Search vendor "Insyde" for product "Insydeh2o" and version " >= 5.2 < 5.26.45"		-		Affected
Insyde Search vendor "Insyde"		Insydeh2o Search vendor "Insyde" for product "Insydeh2o"				>= 5.3 < 5.33.45 Search vendor "Insyde" for product "Insydeh2o" and version " >= 5.3 < 5.33.45"		-		Affected
Insyde Search vendor "Insyde"		Insydeh2o Search vendor "Insyde" for product "Insydeh2o"				>= 5.0 < 5.08.45 Search vendor "Insyde" for product "Insydeh2o" and version " >= 5.0 < 5.08.45"		-		Affected
Insyde Search vendor "Insyde"		Insydeh2o Search vendor "Insyde" for product "Insydeh2o"				>= 5.4 < 5.43.45 Search vendor "Insyde" for product "Insydeh2o" and version " >= 5.4 < 5.43.45"		-		Affected
Insyde Search vendor "Insyde"		Insydeh2o Search vendor "Insyde" for product "Insydeh2o"				>= 5.5 < 5.51.45 Search vendor "Insyde" for product "Insydeh2o" and version " >= 5.5 < 5.51.45"		-		Affected