CVEs-PoC/2021/CVE-2021-21791.md

### [CVE-2021-21791](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21791)
![](https://img.shields.io/static/v1?label=Product&message=IOBit&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=IOBit%20Advanced%20SystemCare%20Ultimate%2014.2.0.220%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-782%3A%20Exposed%20IOCTL%20with%20Insufficient%20Access%20Control&color=brightgreen)

### Description

An information disclosure vulnerability exists in the the way IOBit Advanced SystemCare Ultimate 14.2.0.220 driver handles Privileged I/O read requests. A specially crafted I/O request packet (IRP) can lead to privileged reads in the context of a driver which can result in sensitive information disclosure from the kernel. The IN instruction can read two bytes from the given I/O device, potentially leaking sensitive device data to unprivileged users.

### POC

#### Reference
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1255

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