CVEs-PoC/2021/CVE-2021-4217.md

### [CVE-2021-4217](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4217)
![](https://img.shields.io/static/v1?label=Product&message=unzip&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=unzip%206.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-476%20-%20NULL%20Pointer%20Dereference&color=brightgreen)

### Description

A flaw was found in unzip. The vulnerability occurs due to improper handling of Unicode strings, which can lead to a null pointer dereference. This flaw allows an attacker to input a specially crafted zip file, leading to a crash or code execution.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/CodingSimia/jenkins-shiftleft
- https://github.com/adegoodyer/kubernetes-admin-toolkit
- https://github.com/fuzzing-peach/vul-and-poc
- https://github.com/outlaw777/Vulnerability-Context-Considerations