SB2021100112 - Code execution in Insyde SmmResourceCheckDxe driver
Published: October 1, 2021 Updated: February 3, 2022
Security Bulletin ID
SB2021100112
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Buffer overflow (CVE-ID: CVE-2021-33626)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in SMM (System Management Mode) branch that registers a SWSMI handler. A local user can trigger memory corruption and execute arbitrary code on the target system.
Remediation
Install update from vendor's website.