CVE-2021-43877 ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability
An attacker can exploit this vulnerability in ASP.NET Core and Visual Studio to elevate privileges on the affected system.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-43877?
CVE-2021-43877 is a high-severity vulnerability in Microsoft Visual Studio 2019, published on 15 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability
Which versions are affected by CVE-2021-43877?
1 open source package ship an affected version, including aspnet-core. It affects 3 products.
| Package | Affected | Fixed in |
|---|---|---|
aspnet-core Bitnami | From 3.1.0 | 3.1.1, 5.0.1, 6.0.1 |
Products include Microsoft Asp.net Core, Microsoft Visual Studio 2019, Microsoft Visual Studio 2022.
How do I fix CVE-2021-43877?
Upgrade aspnet-core to a fixed version for your release line: 3.1.1, 5.0.1 or 6.0.1.
Is CVE-2021-43877 being exploited?
There is no known exploitation of CVE-2021-43877 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Visual Studio 2019
Sources
Also known as BIT-aspnet-core-2021-43877.