CVEs-PoC/2016/CVE-2016-7053.md

### [CVE-2016-7053](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7053)
![](https://img.shields.io/static/v1?label=Product&message=OpenSSL&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=openssl-1.1.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=openssl-1.1.0a%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=openssl-1.1.0b%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=NULL%20pointer%20deference&color=brightgreen)

### Description

In OpenSSL 1.1.0 before 1.1.0c, applications parsing invalid CMS structures can crash with a NULL pointer dereference. This is caused by a bug in the handling of the ASN.1 CHOICE type in OpenSSL 1.1.0 which can result in a NULL value being passed to the structure callback if an attempt is made to free certain invalid encodings. Only CHOICE structures using a callback which do not handle NULL value are affected.

### POC

#### Reference
No PoCs from references.

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