CVEs-PoC/2021/CVE-2021-1784.md

### [CVE-2021-1784](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1784)
![](https://img.shields.io/static/v1?label=Product&message=macOS&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2011.3%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3C%202021%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=A%20malicious%20application%20may%20be%20able%20to%20modify%20protected%20parts%20of%20the%20file%20system&color=brighgreen)

### Description

A permissions issue existed in DiskArbitration. This was addressed with additional ownership checks. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. A malicious application may be able to modify protected parts of the file system.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/Jymit/macos-notes