CVEs-PoC/2020/CVE-2020-1045.md

### [CVE-2020-1045](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1045)
![](https://img.shields.io/static/v1?label=Product&message=ASP.NET%20Core%202.1&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=ASP.NET%20Core%203.1&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=2.0%3C%20publication%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=3.0%3C%20publication%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Security%20Feature%20Bypass&color=brighgreen)

### Description

<p>A security feature bypass vulnerability exists in the way Microsoft ASP.NET Core parses encoded cookie names.</p><p>The ASP.NET Core cookie parser decodes entire cookie strings which could allow a malicious attacker to set a second cookie with the name being percent encoded.</p><p>The security update addresses the vulnerability by fixing the way the ASP.NET Core cookie parser handles encoded names.</p>

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/404notf0und/CVE-Flow
- https://github.com/ARPSyndicate/cvemon
- https://github.com/Live-Hack-CVE/CVE-2020-1045