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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 [2024-06-28] #