CVEs-PoC/2017/CVE-2017-7563.md

### [CVE-2017-7563](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7563)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brightgreen)

### Description

In ARM Trusted Firmware 1.3, RO memory is always executable at AArch64 Secure EL1, allowing attackers to bypass the MT_EXECUTE_NEVER protection mechanism. This issue occurs because of inconsistency in the number of execute-never bits (one bit versus two bits).

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/axxia/axxia_atf