Buffer overflow in SmmResourceCheckDxe - CVE-2021-33626
Published: February 3, 2022
Vulnerability identifier: #VU60278
CSH Severity: Low
CVSS v4.0: 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
CVE-ID: CVE-2021-33626
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Insyde Software
Affected software:
SmmResourceCheckDxe
SmmResourceCheckDxe
Detailed vulnerability description
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.
How to mitigate CVE-2021-33626
Install updates from vendor's website.