Zendesk App SweetHawk Survey 1.6 – Persistent Cross-Site Scripting
# Exploit Title: Zendesk App SweetHawk Survey 1.6 - Persistent Cross-Site Scripting # Date: 2019-12-17 # Exploit Author: MTK # Vendor Homepage: https://sweethawk.co/zendesk/survey-app # Software Link: https://www.zendesk.com/apps/support/survey/ # Version: Up to v1.6 # Tested on: Zendesk - Firefox/Windows # Software description: # Sweet Hawk Survey app ask customers for a 0-10 score instead of the normal good or bad question. # You can get more granular satisfaction data without compromising the response rate. # Ask an optional NPS question on the landing page. View reports and drill down into the response # detail and go directly to the ticket. Easy to set up, just replace the survey place holder in # your trigger or automation. Customize the landing pages for each of your brands. # Technical Details & Impact: # Attackers use vulnerable web pages to inject malicious code and have it stored on the web server # for later use. The payload is automatically served to users who browse web pages and executed in # their context. Thus, the victims do not need to click on a malicious link to run the payload. # All they have to do is visit a vulnerable web page. # POC 1. Open Support ticket in Zendesk and send XSS payload e.g; <script>alert(1);</script> 2. Generate survey request to rate the ticket and payload will execute; # Time line 09-19-2019 - Vulnerability discovered 09-20-2019 - Vendor contacted 12-02-2019 - Detailed report shared and full disclosure time line given with no response 12-17-2019 - Full Disclosure |