SB2021061627 - Inclusion of Functionality from Untrusted Control Sphere in Insyde InsydeH2O
Published: June 16, 2021 Updated: February 3, 2022
Security Bulletin ID
SB2021061627
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Inclusion of Functionality from Untrusted Control Sphere (CVE-ID: CVE-2020-27339)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper usage of Insyde firmware’s SMM services in the handler for IDE devices. A local administrator can gain escalated privileges or access to privileged information.
Remediation
Install update from vendor's website.