### [CVE-2013-4660](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4660)
![](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 JS-YAML module before 2.0.5 for Node.js parses input without properly considering the unsafe !!js/function tag, which allows remote attackers to execute arbitrary code via a crafted string that triggers an eval operation.

### POC

#### Reference
- https://nealpoole.com/blog/2013/06/code-execution-via-yaml-in-js-yaml-nodejs-module/
- https://nealpoole.com/blog/2013/06/code-execution-via-yaml-in-js-yaml-nodejs-module/

#### Github
- https://github.com/ContainerSolutions/node-hack
- https://github.com/lalyos/docker-security-course