SB2021041211 - Multiple vulnerabilities in ASUS GPU Tweak II

Description

This security bulletin contains information about 2 vulnerabilities.

1) Stack-based buffer overflow (CVE-ID: CVE-2021-28686)

CWE-ID: CWE-121 - Stack-based buffer overflow

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in AsIO2_64.sys and AsIO2_32.sys. A local user can send a specially crafted request, trigger stack-based buffer overflow and cause a denial of condition on the target system.

2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2021-28685)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: 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

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions in AsIO2_64.sys and AsIO2_32.sys. A local user can interact directly with physical memory via the "DeviceIoControl" and gain elevated privileges on the target system.

Remediation

Install update from vendor's website.

References

• https://gist.github.com/DStraghkov/fba4994ac4bb3a6e2940b21743563df0
• https://www.asus.com/Static_WebPage/ASUS-Product-Security-Advisory/