Integer overflow in Microsoft Windows and Windows Server - CVE-2021-40478

Vulnerability identifier: #VU57260

CSH Severity: Low

CVSS v4: 8.5 [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]

CVE-ID: CVE-2021-40478

CWE-ID: CWE-190

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to integer overflow within the Storage Spaces Controller storport.sys driver. A local user can run a specially crafted program to trigger integer overflow and execute arbitrary code with SYSTEM privileges.

Microsoft Windows
Windows Server
Solutions Enabler Virtual Appliance
Solutions Enabler
Unisphere 360
Unisphere for PowerMax Virtual Appliance
Unisphere for PowerMax
VASA Provider Standalone

Install updates from vendor's website.

Solutions Enabler Virtual Appliance - addressed in versions 9.1.0.18, 9.2.3.0
Solutions Enabler - addressed in versions 9.1.0.18, 9.2.3.0
Unisphere 360 - addressed in versions 9.1.0.29, 9.2.3.3
Unisphere for PowerMax Virtual Appliance - addressed in versions 9.1.0.31, 9.2.3.4
Unisphere for PowerMax - addressed in versions 9.1.0.31, 9.2.3.4
VASA Provider Standalone - addressed in versions 9.1.0.723, 9.2.3.0

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40478
• https://www.zerodayinitiative.com/advisories/ZDI-21-1155/

• Multiple vulnerabilities in Microsoft Storage Spaces Controller
• Multiple vulnerabilities in Dell Unisphere for PowerMax, Dell Solutions Enabler, Dell Unisphere 360, Dell VASA