Permissions, Privileges, and Access Controls in .NET Install Tool for Extension Authors and .NET Education Bundle SDK Install Tool - CVE-2021-34477

Vulnerability identifier: #VU54809

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-2021-34477

CWE-ID: CWE-264

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 application does not properly impose security restrictions in the Visual Studio Code .NET Runtime, which leads to security restrictions bypass and privilege escalation.

.NET Install Tool for Extension Authors
.NET Education Bundle SDK Install Tool
Solutions Enabler
Unisphere for PowerMax Virtual Appliance
Unisphere for PowerMax
Solutions Enabler Virtual Appliance

Install updates from vendor's website.

Solutions Enabler Virtual Appliance - addressed in versions 9.1.0.17, 9.2.2.0
Solutions Enabler - addressed in versions 9.1.0.17, 9.2.2.0
Unisphere for PowerMax Virtual Appliance - addressed in versions 9.1.0.28, 9.2.2.2
Unisphere for PowerMax - addressed in versions 9.1.0.28, 9.2.2.2

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34477

• Privilege escalation in Microsoft Visual Studio Code .NET Runtime
• Multiple vulnerabilities in Dell EMC Unisphere for PowerMax and Dell EMC Solutions Enabler