cve/2021/CVE-2021-1871.md

### [CVE-2021-1871](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1871)
![](https://img.shields.io/static/v1?label=Product&message=iOS%20and%20iPadOS&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=macOS&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2011.2%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2014.4%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=A%20remote%20attacker%20may%20be%20able%20to%20cause%20arbitrary%20code%20execution.%20Apple%20is%20aware%20of%20a%20report%20that%20this%20issue%20may%20have%20been%20actively%20exploited.&color=brighgreen)

### Description

A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/Ostorlab/KEV
- https://github.com/Ostorlab/known_exploited_vulnerbilities_detectors
- https://github.com/chenghungpan/test_data