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Forcepoint WebSecurity 8.5 - Reflective Cross-Site Scripting Vulnerability
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# Exploit Title: Forcepoint WebSecurity 8.5 - Reflective Cross-Site Scripting
# Exploit Author: Prasenjit Kanti Paul
# Vendor Homepage: https://www.forcepoint.com/
# Software Link: https://www.forcepoint.com/product/cloud-security/web-security
# Version: Forcepoint Web Security 8.5
# Tested on: Windows 7,10 and Linux Mint
# CVE : CVE-2019-6146
# ForcePoint KBA: https://support.forcepoint.com/KBArticle?id=000017702
# Video PoC: https://youtu.be/NfXGaNVK6eE
# Description: User must visit any site which is restricted as per
# forcepoint policy. So that forcepoint web security will show a generic
# page. While parsing "Domain Name" within generic page forcepoint is not
# validating Host header, which caused XSS.
Lets assume, while accessing anysite.com, forcepoint web security prevents
us to go to that website with its custom exception/blocking page. Now
follow the steps below:
*Steps*:
1. Intercept the traffic while accessing https://anysite.com
2. Modify the Host header from anysite.com to ">
<script>alert("evilsite")</script>
*Timeline:*
- Oct. 21, 2019 - Issue Reported to PSIRT team of ForcePoint
- Oct. 23, 2019 - ForcePoint team confirms the issue
- Oct. 24, 2019 - CVE-2019-6146 has been assigned
- Jan. 23, 2020 - ForcePoint KBA has been published with proper fixes
*Regards,*
*Prasenjit Kanti Paul*
# 0day.today [2024-11-15] #