Privilege escalation in Microsoft .NET and Visual Studio



Published: 2021-05-11
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-31204
CWE-ID CWE-264
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Microsoft .NET Core
Server applications / Frameworks for developing and running applications

Microsoft .NET
Server applications / Frameworks for developing and running applications

Visual Studio
Universal components / Libraries / Software for developers

Vendor Microsoft

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU53123

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2021-31204

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

Exploit availability: No

Description

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 .NET and Visual Studio, which leads to security restrictions bypass and privilege escalation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft .NET Core: 3.1

Visual Studio: 2019 for Mac version 8.9 - 2019 version 16.9

Microsoft .NET: 5.0


CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31204

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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