Exposed IOCTL with Insufficient Access Control in Advanced SystemCare Ultimate - CVE-2021-21788
Published: July 8, 2021
Vulnerability identifier: #VU54601
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-2021-21788
CWE-ID: CWE-782
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: IObit
Affected software:
Advanced SystemCare Ultimate
Advanced SystemCare Ultimate
Detailed vulnerability description
The vulnerability allows a local user to gain elevated privileges on the system.
The vulnerability exists the way IOBit Advanced SystemCare Ultimate driver handles Privileged I/O write requests within OUT word. A local user can use a specially crafted I/O request packet (IRP) and escalate privileges.
How to mitigate CVE-2021-21788
Install updates from vendor's website.