Detect old NSS and OpenSSL versions

This will detect old NSS and OpenSSL versions and show appropriate errors in the admin interface.

Fixes https://github.com/owncloud/core/issues/17901

core/js/setupchecks.js

@@ -69,6 +69,9 @@
 							t('core', '/dev/urandom is not readable by PHP which is highly discouraged for security reasons. Further information can be found in our <a href="{docLink}">documentation</a>.', {docLink: data.securityDocs})
 						);
 					}
+					if(data.isUsedTlsLibOutdated) {
+						messages.push(data.isUsedTlsLibOutdated);
+					}
 				} else {
 					messages.push(t('core', 'Error occurred while checking server setup'));
 				}

settings/application.php

@@ -154,7 +154,8 @@ class Application extends App {
 				$c->query('Config'),
 				$c->query('ClientService'),
 				$c->query('URLGenerator'),
-				$c->query('Util')
+				$c->query('Util'),
+				$c->query('L10N')
 			);
 		});
 

settings/controller/checksetupcontroller.php

@@ -23,10 +23,12 @@
 
 namespace OC\Settings\Controller;
 
+use GuzzleHttp\Exception\ClientException;
 use OCP\AppFramework\Controller;
 use OCP\AppFramework\Http\DataResponse;
 use OCP\Http\Client\IClientService;
 use OCP\IConfig;
+use OCP\IL10N;
 use OCP\IRequest;
 use OC_Util;
 use OCP\IURLGenerator;
@@ -43,6 +45,8 @@ class CheckSetupController extends Controller {
 	private $util;
 	/** @var IURLGenerator */
 	private $urlGenerator;
+	/** @var IL10N */
+	private $l10n;
 
 	/**
 	 * @param string $AppName
@@ -51,18 +55,21 @@ class CheckSetupController extends Controller {
 	 * @param IClientService $clientService
 	 * @param IURLGenerator $urlGenerator
 	 * @param \OC_Util $util
+	 * @param IL10N $l10n
 	 */
 	public function __construct($AppName,
 								IRequest $request,
 								IConfig $config,
 								IClientService $clientService,
 								IURLGenerator $urlGenerator,
-								\OC_Util $util) {
+								\OC_Util $util,
+								IL10N $l10n) {
 		parent::__construct($AppName, $request);
 		$this->config = $config;
 		$this->clientService = $clientService;
 		$this->util = $util;
 		$this->urlGenerator = $urlGenerator;
+		$this->l10n = $l10n;
 	}
 
 	/**
@@ -109,6 +116,66 @@ class CheckSetupController extends Controller {
 		return false;
 	}
 
+	/**
+	 * Public for the sake of unit-testing
+	 *
+	 * @return array
+	 */
+	public function getCurlVersion() {
+		return curl_version();
+	}
+
+	/**
+	 * Check if the used  SSL lib is outdated. Older OpenSSL and NSS versions do
+	 * have multiple bugs which likely lead to problems in combination with
+	 * functionalities required by ownCloud such as SNI.
+	 *
+	 * @link https://github.com/owncloud/core/issues/17446#issuecomment-122877546
+	 * @link https://bugzilla.redhat.com/show_bug.cgi?id=1241172
+	 * @return string
+	 */
+	private function isUsedTlsLibOutdated() {
+		$versionString = $this->getCurlVersion();
+		if(isset($versionString['ssl_version'])) {
+			$versionString = $versionString['ssl_version'];
+		} else {
+			return '';
+		}
+
+		$features = (string)$this->l10n->t('installing and updating apps via the app store or Federated Cloud Sharing');
+		if(OC_Util::getEditionString() !== '') {
+			$features = (string)$this->l10n->t('Federated Cloud Sharing');
+		}
+
+		// Check if at least OpenSSL after 1.01d or 1.0.2b
+		if(strpos($versionString, 'OpenSSL/') === 0) {
+			$majorVersion = substr($versionString, 8, 5);
+			$patchRelease = substr($versionString, 13, 6);
+
+			if(($majorVersion === '1.0.1' && ord($patchRelease) < ord('d')) ||
+				($majorVersion === '1.0.2' && ord($patchRelease) < ord('b'))) {
+				return (string) $this->l10n->t('cURL is using an outdated %s version (%s). Please update your operating system or features such as %s will not work reliably.', ['OpenSSL', $versionString, $features]);
+			}
+		}
+
+		// Check if NSS and perform heuristic check
+		if(strpos($versionString, 'NSS/') === 0) {
+			try {
+				$firstClient = $this->clientService->newClient();
+				$firstClient->get('https://www.owncloud.org/');
+
+				$secondClient = $this->clientService->newClient();
+				$secondClient->get('https://owncloud.org/');
+			} catch (ClientException $e) {
+				if($e->getResponse()->getStatusCode() === 400) {
+					return (string) $this->l10n->t('cURL is using an outdated %s version (%s). Please update your operating system or features such as %s will not work reliably.', ['NSS', $versionString, $features]);
+				}
+			}
+		}
+
+		return '';
+	}
+
 	/**
 	 * @return DataResponse
 	 */
@@ -121,6 +188,7 @@ class CheckSetupController extends Controller {
 				'memcacheDocs' => $this->urlGenerator->linkToDocs('admin-performance'),
 				'isUrandomAvailable' => $this->isUrandomAvailable(),
 				'securityDocs' => $this->urlGenerator->linkToDocs('admin-security'),
+				'isUsedTlsLibOutdated' => $this->isUsedTlsLibOutdated(),
 			]
 		);
 	}

tests/settings/controller/CheckSetupControllerTest.php

@@ -24,6 +24,7 @@ namespace OC\Settings\Controller;
 use OCP\AppFramework\Http\DataResponse;
 use OCP\Http\Client\IClientService;
 use OCP\IConfig;
+use OCP\IL10N;
 use OCP\IRequest;
 use OCP\IURLGenerator;
 use OC_Util;
@@ -47,6 +48,8 @@ class CheckSetupControllerTest extends TestCase {
 	private $urlGenerator;
 	/** @var OC_Util */
 	private $util;
+	/** @var IL10N */
+	private $l10n;
 
 	public function setUp() {
 		parent::setUp();
@@ -63,15 +66,24 @@ class CheckSetupControllerTest extends TestCase {
 			->disableOriginalConstructor()->getMock();
 		$this->urlGenerator = $this->getMockBuilder('\OCP\IURLGenerator')
 			->disableOriginalConstructor()->getMock();
-
-		$this->checkSetupController = new CheckSetupController(
+		$this->l10n = $this->getMockBuilder('\OCP\IL10N')
+			->disableOriginalConstructor()->getMock();
+		$this->l10n->expects($this->any())
+			->method('t')
+			->will($this->returnCallback(function($message, array $replace) {
+				return vsprintf($message, $replace);
+			}));
+		$this->checkSetupController = $this->getMockBuilder('\OC\Settings\Controller\CheckSetupController')
+			->setConstructorArgs([
 				'settings',
 				$this->request,
 				$this->config,
 				$this->clientService,
 				$this->urlGenerator,
-			$this->util
-		);
+				$this->util,
+				$this->l10n,
+				])
+			->setMethods(['getCurlVersion'])->getMock();
 	}
 
 	public function testIsInternetConnectionWorkingDisabledViaConfig() {
@@ -241,8 +253,134 @@ class CheckSetupControllerTest extends TestCase {
 				'memcacheDocs' => 'http://doc.owncloud.org/server/go.php?to=admin-performance',
 				'isUrandomAvailable' => self::invokePrivate($this->checkSetupController, 'isUrandomAvailable'),
 				'securityDocs' => 'https://doc.owncloud.org/server/8.1/admin_manual/configuration_server/hardening.html',
+				'isUsedTlsLibOutdated' => '',
 			]
 		);
 		$this->assertEquals($expected, $this->checkSetupController->check());
 	}
+
+	public function testGetCurlVersion() {
+		$checkSetupController = $this->getMockBuilder('\OC\Settings\Controller\CheckSetupController')
+			->setConstructorArgs([
+				'settings',
+				$this->request,
+				$this->config,
+				$this->clientService,
+				$this->urlGenerator,
+				$this->util,
+				$this->l10n,
+			])
+			->setMethods(null)->getMock();
+
+		$this->assertArrayHasKey('ssl_version', $checkSetupController->getCurlVersion());
+	}
+
+	public function testIsUsedTlsLibOutdatedWithAnotherLibrary() {
+		$this->checkSetupController
+			->expects($this->once())
+			->method('getCurlVersion')
+			->will($this->returnValue(['ssl_version' => 'SSLlib']));
+		$this->assertSame('', $this->invokePrivate($this->checkSetupController, 'isUsedTlsLibOutdated'));
+	}
+
+	public function testIsUsedTlsLibOutdatedWithMisbehavingCurl() {
+		$this->checkSetupController
+			->expects($this->once())
+			->method('getCurlVersion')
+			->will($this->returnValue([]));
+		$this->assertSame('', $this->invokePrivate($this->checkSetupController, 'isUsedTlsLibOutdated'));
+	}
+
+	public function testIsUsedTlsLibOutdatedWithOlderOpenSsl() {
+		$this->checkSetupController
+			->expects($this->once())
+			->method('getCurlVersion')
+			->will($this->returnValue(['ssl_version' => 'OpenSSL/1.0.1c']));
+		$this->assertSame('cURL is using an outdated OpenSSL version (OpenSSL/1.0.1c). Please update your operating system or features such as installing and updating apps via the app store or Federated Cloud Sharing will not work reliably.', $this->invokePrivate($this->checkSetupController, 'isUsedTlsLibOutdated'));
+	}
+
+	public function testIsUsedTlsLibOutdatedWithOlderOpenSsl1() {
+		$this->checkSetupController
+			->expects($this->once())
+			->method('getCurlVersion')
+			->will($this->returnValue(['ssl_version' => 'OpenSSL/1.0.2a']));
+		$this->assertSame('cURL is using an outdated OpenSSL version (OpenSSL/1.0.2a). Please update your operating system or features such as installing and updating apps via the app store or Federated Cloud Sharing will not work reliably.', $this->invokePrivate($this->checkSetupController, 'isUsedTlsLibOutdated'));
+	}
+
+	public function testIsUsedTlsLibOutdatedWithMatchingOpenSslVersion() {
+		$this->checkSetupController
+			->expects($this->once())
+			->method('getCurlVersion')
+			->will($this->returnValue(['ssl_version' => 'OpenSSL/1.0.1d']));
+			$this->assertSame('', $this->invokePrivate($this->checkSetupController, 'isUsedTlsLibOutdated'));
+	}
+
+	public function testIsUsedTlsLibOutdatedWithMatchingOpenSslVersion1() {
+		$this->checkSetupController
+			->expects($this->once())
+			->method('getCurlVersion')
+			->will($this->returnValue(['ssl_version' => 'OpenSSL/1.0.2b']));
+		$this->assertSame('', $this->invokePrivate($this->checkSetupController, 'isUsedTlsLibOutdated'));
+	}
+
+	public function testIsBuggyNss400() {
+		$this->checkSetupController
+			->expects($this->once())
+			->method('getCurlVersion')
+			->will($this->returnValue(['ssl_version' => 'NSS/1.0.2b']));
+		$client = $this->getMockBuilder('\OCP\Http\Client\IClient')
+			->disableOriginalConstructor()->getMock();
+		$exception = $this->getMockBuilder('\GuzzleHttp\Exception\ClientException')
+			->disableOriginalConstructor()->getMock();
+		$response = $this->getMockBuilder('\GuzzleHttp\Message\ResponseInterface')
+			->disableOriginalConstructor()->getMock();
+		$response->expects($this->once())
+			->method('getStatusCode')
+			->will($this->returnValue(400));
+		$exception->expects($this->once())
+			->method('getResponse')
+			->will($this->returnValue($response));
+
+		$client->expects($this->at(0))
+			->method('get')
+			->with('https://www.owncloud.org/', [])
+			->will($this->throwException($exception));
+
+		$this->clientService->expects($this->once())
+			->method('newClient')
+			->will($this->returnValue($client));
+
+		$this->assertSame('cURL is using an outdated NSS version (NSS/1.0.2b). Please update your operating system or features such as installing and updating apps via the app store or Federated Cloud Sharing will not work reliably.', $this->invokePrivate($this->checkSetupController, 'isUsedTlsLibOutdated'));
+	}
+
+
+	public function testIsBuggyNss200() {
+		$this->checkSetupController
+			->expects($this->once())
+			->method('getCurlVersion')
+			->will($this->returnValue(['ssl_version' => 'NSS/1.0.2b']));
+		$client = $this->getMockBuilder('\OCP\Http\Client\IClient')
+			->disableOriginalConstructor()->getMock();
+		$exception = $this->getMockBuilder('\GuzzleHttp\Exception\ClientException')
+			->disableOriginalConstructor()->getMock();
+		$response = $this->getMockBuilder('\GuzzleHttp\Message\ResponseInterface')
+			->disableOriginalConstructor()->getMock();
+		$response->expects($this->once())
+			->method('getStatusCode')
+			->will($this->returnValue(200));
+		$exception->expects($this->once())
+			->method('getResponse')
+			->will($this->returnValue($response));
+
+		$client->expects($this->at(0))
+			->method('get')
+			->with('https://www.owncloud.org/', [])
+			->will($this->throwException($exception));
+
+		$this->clientService->expects($this->once())
+			->method('newClient')
+			->will($this->returnValue($client));
+
+		$this->assertSame('', $this->invokePrivate($this->checkSetupController, 'isUsedTlsLibOutdated'));
+	}
 }