Buffer overflow in Microsoft Windows and Windows Server - CVE-2021-36948

Vulnerability identifier: #VU55697

CSH Severity: High

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-2021-36948

CWE-ID: CWE-119

Exploitation vector: Local access

Exploit availability: The vulnerability is being exploited in the wild

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

The vulnerability exists due to a boundary error within the Windows Update Medic Service. A local user can run a specially crafted program to execute arbitrary code with elevated privileges.

Note, the vulnerability is being actively exploited in the wild.

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-2021-36948

• Privilege escalation in Microsoft Windows Update Medic Service
• Multiple vulnerabilities in Dell Unisphere for PowerMax, Dell Solutions Enabler, Dell Unisphere 360, Dell VASA