### [CVE-2017-7881](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7881)
![](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

BigTree CMS through 4.2.17 relies on a substring check for CSRF protection, which allows remote attackers to bypass this check by placing the required admin/developer/ URI within a query string in an HTTP Referer header. This was found in core/admin/modules/developer/_header.php and patched in core/inc/bigtree/admin.php on 2017-04-14.

### POC

#### Reference
- https://www.cdxy.me/?p=765

#### Github
- https://github.com/DigiBorg0/BitTree-Cms
- https://github.com/RobinHoodCoder/Perceptica
- https://github.com/bigtreecms/BigTree-CMS