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Add options for overriding TLS ciphers used (#5915)
* Add the ability to set TLS cipher suites Added config option to set the TLS ciphers instead of relying on a hardcoded list of ciphers determined by meshcentral. * Added option to use default node ciphers This allows the ciphers used to be set to the recommended ciphers by nodejs, as well as allowing the user to override the ciphers using the "--tls-cipher-list" command line switch for node. * Updated validArguments array to include "usenodedefaulttlsciphers" and "tlsciphers" as options
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@ -688,6 +688,19 @@
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"default": false,
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"description": "When true, indicates that a TLS offloader is in front of the MeshCentral server. More typically, set this to the IP address of the reverse proxy or TLS offloader so that IP forwarding headers will be trusted. For example: \"127.0.0.1,192.168.1.100\"."
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},
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"useNodeDefaultTLSCiphers": {
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"type": "boolean",
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"default": false,
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"description": "When true, get the default TLS ciphers from the node process, rather than using the recommended suites set up by meshcentral"
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},
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"tlsCiphers": {
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"type": [
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"string",
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"array"
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],
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"default": null,
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"description": "Allows user to override the TLS ciphers used by meshcentral by default. If a string, should be a ':' separated list of ciphers to accept. If an array, should be an array of strings representing the ciphers to accept."
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},
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"trustedProxy": {
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"type": "string",
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"default": null,
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@ -139,7 +139,7 @@ function CreateMeshCentralServer(config, args) {
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try { require('./pass').hash('test', function () { }, 0); } catch (ex) { console.log('Old version of node, must upgrade.'); return; } // TODO: Not sure if this test works or not.
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// Check for invalid arguments
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const validArguments = ['_', 'user', 'port', 'aliasport', 'mpsport', 'mpsaliasport', 'redirport', 'rediraliasport', 'cert', 'mpscert', 'deletedomain', 'deletedefaultdomain', 'showall', 'showusers', 'showitem', 'listuserids', 'showusergroups', 'shownodes', 'showallmeshes', 'showmeshes', 'showevents', 'showsmbios', 'showpower', 'clearpower', 'showiplocations', 'help', 'exactports', 'xinstall', 'xuninstall', 'install', 'uninstall', 'start', 'stop', 'restart', 'debug', 'filespath', 'datapath', 'noagentupdate', 'launch', 'noserverbackup', 'mongodb', 'mongodbcol', 'wanonly', 'lanonly', 'nousers', 'mpspass', 'ciralocalfqdn', 'dbexport', 'dbexportmin', 'dbimport', 'dbmerge', 'dbfix', 'dbencryptkey', 'selfupdate', 'tlsoffload', 'userallowedip', 'userblockedip', 'swarmallowedip', 'agentallowedip', 'agentblockedip', 'fastcert', 'swarmport', 'logintoken', 'logintokenkey', 'logintokengen', 'mailtokengen', 'admin', 'unadmin', 'sessionkey', 'sessiontime', 'minify', 'minifycore', 'dblistconfigfiles', 'dbshowconfigfile', 'dbpushconfigfiles', 'dbpullconfigfiles', 'dbdeleteconfigfiles', 'vaultpushconfigfiles', 'vaultpullconfigfiles', 'vaultdeleteconfigfiles', 'configkey', 'loadconfigfromdb', 'npmpath', 'serverid', 'recordencryptionrecode', 'vault', 'token', 'unsealkey', 'name', 'log', 'dbstats', 'translate', 'createaccount', 'setuptelegram', 'resetaccount', 'pass', 'removesubdomain', 'adminaccount', 'domain', 'email', 'configfile', 'maintenancemode', 'nedbtodb', 'removetestagents', 'agentupdatetest', 'hashpassword', 'hashpass', 'indexmcrec', 'mpsdebug', 'dumpcores', 'dev'];
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const validArguments = ['_', 'user', 'port', 'aliasport', 'mpsport', 'mpsaliasport', 'redirport', 'rediraliasport', 'cert', 'mpscert', 'deletedomain', 'deletedefaultdomain', 'showall', 'showusers', 'showitem', 'listuserids', 'showusergroups', 'shownodes', 'showallmeshes', 'showmeshes', 'showevents', 'showsmbios', 'showpower', 'clearpower', 'showiplocations', 'help', 'exactports', 'xinstall', 'xuninstall', 'install', 'uninstall', 'start', 'stop', 'restart', 'debug', 'filespath', 'datapath', 'noagentupdate', 'launch', 'noserverbackup', 'mongodb', 'mongodbcol', 'wanonly', 'lanonly', 'nousers', 'mpspass', 'ciralocalfqdn', 'dbexport', 'dbexportmin', 'dbimport', 'dbmerge', 'dbfix', 'dbencryptkey', 'selfupdate', 'tlsoffload', 'usenodedefaulttlsciphers', 'tlsciphers', 'userallowedip', 'userblockedip', 'swarmallowedip', 'agentallowedip', 'agentblockedip', 'fastcert', 'swarmport', 'logintoken', 'logintokenkey', 'logintokengen', 'mailtokengen', 'admin', 'unadmin', 'sessionkey', 'sessiontime', 'minify', 'minifycore', 'dblistconfigfiles', 'dbshowconfigfile', 'dbpushconfigfiles', 'dbpullconfigfiles', 'dbdeleteconfigfiles', 'vaultpushconfigfiles', 'vaultpullconfigfiles', 'vaultdeleteconfigfiles', 'configkey', 'loadconfigfromdb', 'npmpath', 'serverid', 'recordencryptionrecode', 'vault', 'token', 'unsealkey', 'name', 'log', 'dbstats', 'translate', 'createaccount', 'setuptelegram', 'resetaccount', 'pass', 'removesubdomain', 'adminaccount', 'domain', 'email', 'configfile', 'maintenancemode', 'nedbtodb', 'removetestagents', 'agentupdatetest', 'hashpassword', 'hashpass', 'indexmcrec', 'mpsdebug', 'dumpcores', 'dev'];
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for (var arg in obj.args) { obj.args[arg.toLocaleLowerCase()] = obj.args[arg]; if (validArguments.indexOf(arg.toLocaleLowerCase()) == -1) { console.log('Invalid argument "' + arg + '", use --help.'); return; } }
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if (obj.args.mongodb == true) { console.log('Must specify: --mongodb [connectionstring] \r\nSee https://docs.mongodb.com/manual/reference/connection-string/ for MongoDB connection string.'); return; }
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for (i in obj.config.settings) { obj.args[i] = obj.config.settings[i]; } // Place all settings into arguments, arguments have already been placed into settings so arguments take precedence.
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13
webserver.js
13
webserver.js
@ -72,6 +72,8 @@ module.exports.CreateWebServer = function (parent, db, args, certificates, doneF
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obj.users = {}; // UserID --> User
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obj.meshes = {}; // MeshID --> Mesh (also called device group)
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obj.userGroups = {}; // UGrpID --> User Group
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obj.useNodeDefaultTLSCiphers = args.usenodedefaulttlsciphers; // Use TLS ciphers provided by node
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obj.tlsCiphers = args.tlsciphers; // List of TLS ciphers to use
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obj.userAllowedIp = args.userallowedip; // List of allowed IP addresses for users
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obj.agentAllowedIp = args.agentallowedip; // List of allowed IP addresses for agents
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obj.agentBlockedIp = args.agentblockedip; // List of blocked IP addresses for agents
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@ -6135,6 +6137,17 @@ module.exports.CreateWebServer = function (parent, db, args, certificates, doneF
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'!CAMELLIA'
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].join(':');
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if (obj.useNodeDefaultTLSCiphers) {
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ciphers = require("tls").DEFAULT_CIPHERS;
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}
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if (obj.tlsCiphers) {
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ciphers = obj.tlsCiphers;
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if (Array.isArray(obj.tlsCiphers)) {
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ciphers = obj.tlsCiphers.join(":");
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}
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}
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// Setup the HTTP server with TLS, use only TLS 1.2 and higher with perfect forward secrecy (PFS).
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//const tlsOptions = { cert: obj.certificates.web.cert, key: obj.certificates.web.key, ca: obj.certificates.web.ca, rejectUnauthorized: true, ciphers: "HIGH:!aNULL:!eNULL:!EXPORT:!RSA:!DES:!RC4:!MD5:!PSK:!SRP:!CAMELLIA", secureOptions: constants.SSL_OP_NO_SSLv2 | constants.SSL_OP_NO_SSLv3 | constants.SSL_OP_NO_COMPRESSION | constants.SSL_OP_CIPHER_SERVER_PREFERENCE | constants.SSL_OP_NO_TLSv1 | constants.SSL_OP_NO_TLSv1_1 }; // This does not work with TLS 1.3
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const tlsOptions = { cert: obj.certificates.web.cert, key: obj.certificates.web.key, ca: obj.certificates.web.ca, rejectUnauthorized: true, ciphers: ciphers, secureOptions: constants.SSL_OP_NO_SSLv2 | constants.SSL_OP_NO_SSLv3 | constants.SSL_OP_NO_COMPRESSION | constants.SSL_OP_CIPHER_SERVER_PREFERENCE | constants.SSL_OP_NO_TLSv1 | constants.SSL_OP_NO_TLSv1_1 };
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