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Add stricter CSPs 

* Deprecate our default CSP
* Add strict CSP that is always our strictest setting
* Add strict eval CSP (disable unsafe-eval)
* Add strict inline CSP (disables inline styles)

This is just to move forward and have a incremental improvement of our
CSP

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>
This commit is contained in:
Roeland Jago Douma 2018-06-12 22:34:58 +02:00
parent cd87a40eb3
commit b38fa573e1
No known key found for this signature in database
GPG Key ID: F941078878347C0C
6 changed files with 198 additions and 2 deletions
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3
lib/composer/composer/autoload_classmap.php
View File

@ -40,6 +40,9 @@ return array(
'OCP\\AppFramework\\Http\\RedirectResponse' => $baseDir . '/lib/public/AppFramework/Http/RedirectResponse.php',
'OCP\\AppFramework\\Http\\Response' => $baseDir . '/lib/public/AppFramework/Http/Response.php',
'OCP\\AppFramework\\Http\\StreamResponse' => $baseDir . '/lib/public/AppFramework/Http/StreamResponse.php',
'OCP\\AppFramework\\Http\\StrictContentSecurityPolicy' => $baseDir . '/lib/public/AppFramework/Http/StrictContentSecurityPolicy.php',
'OCP\\AppFramework\\Http\\StrictEvalContentSecurityPolicy' => $baseDir . '/lib/public/AppFramework/Http/StrictEvalContentSecurityPolicy.php',
'OCP\\AppFramework\\Http\\StrictInlineContentSecurityPolicy' => $baseDir . '/lib/public/AppFramework/Http/StrictInlineContentSecurityPolicy.php',
'OCP\\AppFramework\\Http\\TemplateResponse' => $baseDir . '/lib/public/AppFramework/Http/TemplateResponse.php',
'OCP\\AppFramework\\Http\\Template\\ExternalShareMenuAction' => $baseDir . '/lib/public/AppFramework/Http/Template/ExternalShareMenuAction.php',
'OCP\\AppFramework\\Http\\Template\\IMenuAction' => $baseDir . '/lib/public/AppFramework/Http/Template/IMenuAction.php',

3
lib/composer/composer/autoload_static.php
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@ -70,6 +70,9 @@ class ComposerStaticInit53792487c5a8370acc0b06b1a864ff4c
'OCP\\AppFramework\\Http\\RedirectResponse' => __DIR__ . '/../../..' . '/lib/public/AppFramework/Http/RedirectResponse.php',
'OCP\\AppFramework\\Http\\Response' => __DIR__ . '/../../..' . '/lib/public/AppFramework/Http/Response.php',
'OCP\\AppFramework\\Http\\StreamResponse' => __DIR__ . '/../../..' . '/lib/public/AppFramework/Http/StreamResponse.php',
'OCP\\AppFramework\\Http\\StrictContentSecurityPolicy' => __DIR__ . '/../../..' . '/lib/public/AppFramework/Http/StrictContentSecurityPolicy.php',
'OCP\\AppFramework\\Http\\StrictEvalContentSecurityPolicy' => __DIR__ . '/../../..' . '/lib/public/AppFramework/Http/StrictEvalContentSecurityPolicy.php',
'OCP\\AppFramework\\Http\\StrictInlineContentSecurityPolicy' => __DIR__ . '/../../..' . '/lib/public/AppFramework/Http/StrictInlineContentSecurityPolicy.php',
'OCP\\AppFramework\\Http\\TemplateResponse' => __DIR__ . '/../../..' . '/lib/public/AppFramework/Http/TemplateResponse.php',
'OCP\\AppFramework\\Http\\Template\\ExternalShareMenuAction' => __DIR__ . '/../../..' . '/lib/public/AppFramework/Http/Template/ExternalShareMenuAction.php',
'OCP\\AppFramework\\Http\\Template\\IMenuAction' => __DIR__ . '/../../..' . '/lib/public/AppFramework/Http/Template/IMenuAction.php',

7
lib/public/AppFramework/Http/ContentSecurityPolicy.php
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@ -27,16 +27,19 @@ namespace OCP\AppFramework\Http;
/**
* Class ContentSecurityPolicy is a simple helper which allows applications to
* modify the Content-Security-Policy sent by ownCloud. Per default only JavaScript,
* modify the Content-Security-Policy sent by Nextcloud. Per default only JavaScript,
* stylesheets, images, fonts, media and connections from the same domain
* ('self') are allowed.
*
* Even if a value gets modified above defaults will still get appended. Please
* notice that ownCloud ships already with sensible defaults and those policies
* notice that Nextcloud ships already with sensible defaults and those policies
* should require no modification at all for most use-cases.
*
* This class allows unsafe-eval of javascript and unsafe-inline of CSS.
*
* @package OCP\AppFramework\Http
* @since 8.1.0
* @deprecated 14.0.0 Use one of our stricter CSP policies
*/
class ContentSecurityPolicy extends EmptyContentSecurityPolicy {
/** @var bool Whether inline JS snippets are allowed */

85
lib/public/AppFramework/Http/StrictContentSecurityPolicy.php Normal file
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@ -0,0 +1,85 @@
<?php
declare(strict_types=1);
/**
* @copyright 2018, Roeland Jago Douma <roeland@famdouma.nl>
*
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCP\AppFramework\Http;
/**
* Class StrictContentSecurityPolicy is a simple helper which allows applications to
* modify the Content-Security-Policy sent by Nextcloud. Per default only JavaScript,
* stylesheets, images, fonts, media and connections from the same domain
* ('self') are allowed.
*
* Even if a value gets modified above defaults will still get appended. Please
* notice that Nextcloud ships already with sensible defaults and those policies
* should require no modification at all for most use-cases.
*
* This class represents out strictest defaults. They may get change from release
* to release if more strict CSP directives become available.
*
* @package OCP\AppFramework\Http
* @since 14.0.0
*/
class StrictContentSecurityPolicy extends EmptyContentSecurityPolicy {
/** @var bool Whether inline JS snippets are allowed */
protected $inlineScriptAllowed = false;
/** @var bool Whether eval in JS scripts is allowed */
protected $evalScriptAllowed = false;
/** @var array Domains from which scripts can get loaded */
protected $allowedScriptDomains = [
'\'self\'',
];
/** @var bool Whether inline CSS is allowed */
protected $inlineStyleAllowed = false;
/** @var array Domains from which CSS can get loaded */
protected $allowedStyleDomains = [
'\'self\'',
];
/** @var array Domains from which images can get loaded */
protected $allowedImageDomains = [
'\'self\'',
'data:',
'blob:',
];
/** @var array Domains to which connections can be done */
protected $allowedConnectDomains = [
'\'self\'',
];
/** @var array Domains from which media elements can be loaded */
protected $allowedMediaDomains = [
'\'self\'',
];
/** @var array Domains from which object elements can be loaded */
protected $allowedObjectDomains = [];
/** @var array Domains from which iframes can be loaded */
protected $allowedFrameDomains = [];
/** @var array Domains from which fonts can be loaded */
protected $allowedFontDomains = [
'\'self\'',
];
/** @var array Domains from which web-workers and nested browsing content can load elements */
protected $allowedChildSrcDomains = [];
/** @var array Domains which can embed this Nextcloud instance */
protected $allowedFrameAncestors = [];
}

51
lib/public/AppFramework/Http/StrictEvalContentSecurityPolicy.php Normal file
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@ -0,0 +1,51 @@
<?php
declare(strict_types=1);
/**
* @copyright 2018, Roeland Jago Douma <roeland@famdouma.nl>
*
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCP\AppFramework\Http;
/**
* Class StrictInlineContentSecurityPolicy is a simple helper which allows applications to
* modify the Content-Security-Policy sent by Nextcloud. Per default only JavaScript,
* stylesheets, images, fonts, media and connections from the same domain
* ('self') are allowed.
*
* Even if a value gets modified above defaults will still get appended. Please
* notice that Nextcloud ships already with sensible defaults and those policies
* should require no modification at all for most use-cases.
*
* This is a temp helper class from the default ContentSecurityPolicy to allow slow
* migration to a stricter CSP. This does not allow unsafe eval.
*
* @package OCP\AppFramework\Http
* @since 14.0.0
*/
class StrictEvalContentSecurityPolicy extends ContentSecurityPolicy {
/**
* @since 14.0.0
*/
public function __construct() {
$this->inlineStyleAllowed = false;
}
}

51
lib/public/AppFramework/Http/StrictInlineContentSecurityPolicy.php Normal file
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@ -0,0 +1,51 @@
<?php
declare(strict_types=1);
/**
* @copyright 2018, Roeland Jago Douma <roeland@famdouma.nl>
*
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCP\AppFramework\Http;
/**
* Class StrictInlineContentSecurityPolicy is a simple helper which allows applications to
* modify the Content-Security-Policy sent by Nextcloud. Per default only JavaScript,
* stylesheets, images, fonts, media and connections from the same domain
* ('self') are allowed.
*
* Even if a value gets modified above defaults will still get appended. Please
* notice that Nextcloud ships already with sensible defaults and those policies
* should require no modification at all for most use-cases.
*
* This is a temp helper class from the default ContentSecurityPolicy to allow slow
* migration to a stricter CSP. This does not allow inline styles.
*
* @package OCP\AppFramework\Http
* @since 14.0.0
*/
class StrictInlineContentSecurityPolicy extends ContentSecurityPolicy {
/**
* @since 14.0.0
*/
public function __construct() {
$this->inlineStyleAllowed = false;
}
}