CVEs-PoC/2016/CVE-2016-3957.md

### [CVE-2016-3957](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3957)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

The secure_load function in gluon/utils.py in web2py before 2.14.2 uses pickle.loads to deserialize session information stored in cookies, which might allow remote attackers to execute arbitrary code by leveraging knowledge of encryption_key.

### POC

#### Reference
- https://devco.re/blog/2017/01/03/web2py-unserialize-code-execution-CVE-2016-3957/

#### Github
- https://github.com/sj/web2py-e94946d-CVE-2016-3957