Permissions, Privileges, and Access Controls in UsbCoreDxe - CVE-2021-43323

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Main Vulnerability Database Vulnerabilities #VU60285

Permissions, Privileges, and Access Controls in UsbCoreDxe - CVE-2021-43323

Published: February 3, 2022


Vulnerability identifier: #VU60285
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-2021-43323
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Insyde Software
Affected software:
UsbCoreDxe

Detailed vulnerability description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to the SMM callout issue. A remote attacker can hijack execution flow of a code running in System Management Mode and escalate privileges.


How to mitigate CVE-2021-43323

Install updates from vendor's website.

Sources