Buffer overflow in AhciBusDxe - CVE-2021-43522
Published: February 3, 2022
Vulnerability identifier: #VU60271
CSH Severity: High
CVSS v4.0: 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-2021-43522
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Insyde Software
Affected software:
AhciBusDxe
AhciBusDxe
Detailed vulnerability 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. A remote attacker can write fixed or predictable data to SMRAM, trigger memory corruption and execute arbitrary code on the target system with elevated privileges.
How to mitigate CVE-2021-43522
Install updates from vendor's website.