CVEs-PoC/2020/CVE-2020-7069.md

### [CVE-2020-7069](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7069)
![](https://img.shields.io/static/v1?label=Product&message=PHP&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=7.3.x%3C%207.3.23%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-20%20Improper%20Input%20Validation&color=brighgreen)

### Description

In PHP versions 7.2.x below 7.2.34, 7.3.x below 7.3.23 and 7.4.x below 7.4.11, when AES-CCM mode is used with openssl_encrypt() function with 12 bytes IV, only first 7 bytes of the IV is actually used. This can lead to both decreased security and incorrect encryption data.

### POC

#### Reference
- https://usn.ubuntu.com/4583-1/
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://www.oracle.com/security-alerts/cpuoct2021.html

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/chnzzh/OpenSSL-CVE-lib