CVE-2020-5953

A vulnerability exists in System Management Interrupt (SWSMI) handler of InsydeH2O UEFI Firmware code located in SWSMI handler that dereferences gRT (EFI_RUNTIME_SERVICES) pointer to call a GetVariable service, which is located outside of SMRAM. This can result in code execution in SMM (escalating privilege from ring 0 to ring -2).

CVSS v3.0 7.5 HIGH
CVSS v2.0 6.9 MEDIUM

7.5^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 0.8 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

6.9^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:M/Au:N/C:C/I:C/A:C

Exploitability : 3.4 / Impact : 10.0

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://www.insyde.com/security-pledge	Vendor Advisory
https://www.insyde.com/products	Product Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
https://security.netapp.com/advisory/ntap-20220222-0005/

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:insyde:insydeh2o:5.12.09.0074:::::::*
	cpe:2.3:a:insyde:insydeh2o:5.23.04.0045:::::::*
	cpe:2.3:a:insyde:insydeh2o:5.23.45.0023:::::::*
	cpe:2.3:a:insyde:insydeh2o:5.33.15.0034:::::::*
	cpe:2.3:a:insyde:insydeh2o:5.34.03.0029:::::::*
	cpe:2.3:a:insyde:insydeh2o:5.42.03.0010:::::::*

Information

Published : 2022-02-03 01:15

Updated : 2022-02-24 15:15

NVD link : CVE-2020-5953

Mitre link : CVE-2020-5953

JSON object : View

Products Affected

insyde

insydeh2o

CWE

NVD-CWE-noinfo

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