CVEs-PoC/2021/CVE-2021-23977.md

### [CVE-2021-23977](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23977)
![](https://img.shields.io/static/v1?label=Product&message=Firefox&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Malicious%20application%20could%20read%20sensitive%20data%20from%20Firefox%20for%20Android's%20application%20directories&color=brighgreen)

### Description

Firefox for Android suffered from a time-of-check-time-of-use vulnerability that allowed a malicious application to read sensitive data from application directories. Note: This issue is only affected Firefox for Android. Other operating systems are unaffected. This vulnerability affects Firefox < 86.

### POC

#### Reference
- https://bugzilla.mozilla.org/show_bug.cgi?id=1684761

#### Github
No PoCs found on GitHub currently.