#VU60276 Buffer overflow in FwBlockServiceSmm - CVE-2021-33627
Published: February 3, 2022
Vulnerability identifier: #VU60276
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-33627
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
FwBlockServiceSmm
FwBlockServiceSmm
Software vendor:
Insyde Software
Insyde Software
Description
The vulnerability allows a remote attacker 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 remote attacker can trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install updates from vendor's website.