Ylianst/MeshCentral
1
0
Fork 0
mirror of https://github.com/Ylianst/MeshCentral.git synced 2024-11-22 12:52:50 +03:00
Code Issues Packages Projects Releases Wiki Activity

Started work on server inner auth support in meshcmd.

Browse Source
This commit is contained in:
Ylian Saint-Hilaire 2021-04-01 21:51:25 -07:00
parent 51bdd97780
commit e163bff7e3
3 changed files with 43 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
agents/meshcmd.js
View File

@ -68,6 +68,7 @@ var FullSite_IntelAmtLocalWebApp = "H4sIAAAAAAAEAMQ5h3ajvNKvwu/9SnI2JICNa7zn4JLu
// Check the server certificate fingerprint
function onVerifyServer(clientName, certs) {
if (certs == null) { certs = clientName; } // Temporary thing until we fix duktape
settings.meshServerTlsHash = certs[certs.length - 1].fingerprint.split(':').join(''); // This is used to delayed server authentication
try { for (var i in certs) { if (certs[i].fingerprint.replace(/:/g, '') == settings.serverhttpshash) { return; } } } catch (e) { }
if (settings.serverhttpshash != null) {
console.log('Error: Failed to verify server certificate.');
@ -2038,10 +2039,28 @@ function OnServerWebSocket(msg, s, head) {
}
break;
}
case 'serverAuth': {
// Check that the server certificate matches the serverid we have
var hasher = require('SHA384Stream').create();
var certDer = Buffer.from(command.cert, 'base64');
var cert = require('tls').loadCertificate({ der: certDer });
if (cert.getKeyHash().toString('hex') != settings.serverid) { console.log("Unable to authenticate the server, invalid server identifier."); process.exit(1); return; }
// Hash the signed data and verify the server signature
var signDataHash = hasher.syncHash(Buffer.concat([Buffer.from(settings.serverAuthClientNonce, 'base64'), Buffer.from(settings.meshServerTlsHash, 'hex'), Buffer.from(command.nonce, 'base64')]));
if (require('RSA').verify(require('RSA').TYPES.SHA384, cert, signDataHash, Buffer.from(command.signature, 'base64')) == false) { console.log("Unable to authenticate the server, invalid signature."); process.exit(1); return; }
console.log('Server is authenticated'); // TODO: Send username/password to server.
break;
}
}
});
s.on('error', function () { console.log("Server connection error."); process.exit(1); return; });
s.on('close', function () { console.log("Server closed the connection."); process.exit(1); return; });
// Perform inner server authentication
//settings.serverAuthClientNonce = require('EncryptionStream').GenerateRandom(48).toString('base64');
//s.write("{\"action\":\"serverAuth\",\"cnonce\":\"" + settings.serverAuthClientNonce + "\",\"tlshash\":\"" + settings.meshServerTlsHash + "\"}"); // Ask for server authentication
}
function startRouterEx() {

11
agents/meshcore.js
View File

@ -1344,7 +1344,8 @@ function getSystemInformation(func) {
} catch (e) { }
}
results.hardware.agentvers = process.versions;
results.hash = require('SHA384Stream').create().syncHash(JSON.stringify(results)).toString('hex');
var hasher = require('SHA384Stream').create();
results.hash = hasher.syncHash(JSON.stringify(results)).toString('hex');
func(results);
/*
@ -1359,25 +1360,25 @@ function getSystemInformation(func) {
p.then(function (res)
{
results.volumes = res;
results.hash = require('SHA384Stream').create().syncHash(JSON.stringify(results)).toString('hex');
results.hash = hasher.syncHash(JSON.stringify(results)).toString('hex');
func(results);
});
}
else if (require('identifiers').volumes != null)
{
results.volumes = require('identifiers').volumes();
results.hash = require('SHA384Stream').create().syncHash(JSON.stringify(results)).toString('hex');
results.hash = hasher.syncHash(JSON.stringify(results)).toString('hex');
func(results);
}
else
{
results.hash = require('SHA384Stream').create().syncHash(JSON.stringify(results)).toString('hex');
results.hash = hasher.syncHash(JSON.stringify(results)).toString('hex');
func(results);
}
}
else
{
results.hash = require('SHA384Stream').create().syncHash(JSON.stringify(results)).toString('hex');
results.hash = hasher.syncHash(JSON.stringify(results)).toString('hex');
func(results);
}
*/

18
meshuser.js
View File

@ -5544,6 +5544,24 @@ module.exports.CreateMeshUser = function (parent, db, ws, req, args, domain, use
//console.log(command, file);
break;
}
case 'serverAuth': { // This command is used to perform server "inner" authentication.
if (common.validateString(command.cnonce, 1, 256) == false) break; // Check the client nonce
if (common.validateString(command.tlshash, 1, 512) == false) break; // Check the TLS hash
// Check that the TLS hash is an acceptable one.
var h = Buffer.from(command.tlshash, 'hex').toString('binary');
if ((parent.webCertificateHashs[domain.id] != h) && (parent.webCertificateFullHashs[domain.id] != h) && (parent.defaultWebCertificateHash != h) && (parent.defaultWebCertificateFullHash != h)) { obj.close(); return; }
// TLS hash check is a success, sign the request.
// Perform the hash signature using the server agent certificate
var nonce = parent.crypto.randomBytes(48);
var signData = Buffer.from(command.cnonce, 'base64').toString('binary') + h + nonce.toString('binary'); // Client Nonce + TLS Hash + Server Nonce
parent.parent.certificateOperations.acceleratorPerformSignature(0, signData, null, function (tag, signature) {
// Send back our certificate + nonce + signature
ws.send(JSON.stringify({ 'action': 'serverAuth', 'cert': Buffer.from(parent.agentCertificateAsn1, 'binary').toString('base64'), 'nonce': nonce.toString('base64'), 'signature': Buffer.from(signature,'binary').toString('base64') }));
});
break;
}
default: {
// Unknown user action
console.log('Unknown action from user ' + user.name + ': ' + command.action + '.');