Merge pull request #43778 from nextcloud/fix/edge-csp

Fix CSP for script-src with nonce on edge

Author: juliusknorr

lib/private/AppFramework/Http/Request.php

@@ -68,7 +68,7 @@
 class Request implements \ArrayAccess, \Countable, IRequest {
 	public const USER_AGENT_IE = '/(MSIE)|(Trident)/';
 	// Microsoft Edge User Agent from https://msdn.microsoft.com/en-us/library/hh869301(v=vs.85).aspx
-	public const USER_AGENT_MS_EDGE = '/^Mozilla\/5\.0 \([^)]+\) AppleWebKit\/[0-9.]+ \(KHTML, like Gecko\) Chrome\/[0-9.]+ (Mobile Safari|Safari)\/[0-9.]+ Edge\/[0-9.]+$/';
+	public const USER_AGENT_MS_EDGE = '/^Mozilla\/5\.0 \([^)]+\) AppleWebKit\/[0-9.]+ \(KHTML, like Gecko\) Chrome\/[0-9.]+ (Mobile Safari|Safari)\/[0-9.]+ Edge?\/[0-9.]+$/';
 	// Firefox User Agent from https://developer.mozilla.org/en-US/docs/Web/HTTP/Gecko_user_agent_string_reference
 	public const USER_AGENT_FIREFOX = '/^Mozilla\/5\.0 \([^)]+\) Gecko\/[0-9.]+ Firefox\/[0-9.]+$/';
 	// Chrome User Agent from https://developer.chrome.com/multidevice/user-agent

lib/private/Security/CSP/ContentSecurityPolicyNonceManager.php

@@ -69,6 +69,7 @@ public function browserSupportsCspV3(): bool {
 			Request::USER_AGENT_CHROME,
 			Request::USER_AGENT_FIREFOX,
 			Request::USER_AGENT_SAFARI,
+			Request::USER_AGENT_MS_EDGE,
 		];
 
 		if ($this->request->isUserAgent($browserWhitelist)) {

lib/public/AppFramework/Http/EmptyContentSecurityPolicy.php

@@ -37,8 +37,8 @@
  * @since 9.0.0
  */
 class EmptyContentSecurityPolicy {
-	/** @var string JS nonce to be used */
-	protected $jsNonce = null;
+	/** @var ?string JS nonce to be used */
+	protected ?string $jsNonce = null;
 	/** @var bool Whether strict-dynamic should be used */
 	protected $strictDynamicAllowed = null;
 	/** @var bool Whether strict-dynamic should be used on script-src-elem */
@@ -460,7 +460,7 @@ public function buildPolicy() {
 		$policy .= "base-uri 'none';";
 		$policy .= "manifest-src 'self';";
 
-		if (!empty($this->allowedScriptDomains) || $this->evalScriptAllowed || $this->evalWasmAllowed) {
+		if (!empty($this->allowedScriptDomains) || $this->evalScriptAllowed || $this->evalWasmAllowed || is_string($this->jsNonce)) {
 			$policy .= 'script-src ';
 			$scriptSrc = '';
 			if (is_string($this->jsNonce)) {