security #cve-2018-14773 [HttpFoundation] Remove support for legacy and risky HTTP headers (nicolas-grekas)

nicolas-grekas · nicolas-grekas · commit efcde3d068d4 · 2018-08-01T10:43:33.000+02:00
This PR was merged into the 2.7 branch. Discussion ---------- [2.7][HttpFoundation] Remove support for legacy and risky HTTP headers Commits ------- eda2b20 [HttpFoundation] Remove support for legacy and risky HTTP headers
diff --git a/src/Symfony/Component/HttpFoundation/CHANGELOG.md b/src/Symfony/Component/HttpFoundation/CHANGELOG.md
@@ -1,6 +1,12 @@
 CHANGELOG
 =========
 
+2.7.49
+------
+
+ * [BC BREAK] Support for the IIS-only `X_ORIGINAL_URL` and `X_REWRITE_URL`
+   HTTP headers has been dropped for security reasons.
+
 2.6.0
 -----
 
diff --git a/src/Symfony/Component/HttpFoundation/Request.php b/src/Symfony/Component/HttpFoundation/Request.php
@@ -1712,18 +1712,7 @@ protected function prepareRequestUri()
     {
         $requestUri = '';
 
-        if ($this->headers->has('X_ORIGINAL_URL')) {
-            // IIS with Microsoft Rewrite Module
-            $requestUri = $this->headers->get('X_ORIGINAL_URL');
-            $this->headers->remove('X_ORIGINAL_URL');
-            $this->server->remove('HTTP_X_ORIGINAL_URL');
-            $this->server->remove('UNENCODED_URL');
-            $this->server->remove('IIS_WasUrlRewritten');
-        } elseif ($this->headers->has('X_REWRITE_URL')) {
-            // IIS with ISAPI_Rewrite
-            $requestUri = $this->headers->get('X_REWRITE_URL');
-            $this->headers->remove('X_REWRITE_URL');
-        } elseif ('1' == $this->server->get('IIS_WasUrlRewritten') && '' != $this->server->get('UNENCODED_URL')) {
+        if ('1' == $this->server->get('IIS_WasUrlRewritten') && '' != $this->server->get('UNENCODED_URL')) {
             // IIS7 with URL Rewrite: make sure we get the unencoded URL (double slash problem)
             $requestUri = $this->server->get('UNENCODED_URL');
             $this->server->remove('UNENCODED_URL');
diff --git a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
@@ -1769,52 +1769,8 @@ public function iisRequestUriProvider()
     {
         return array(
             array(
-                array(
-                    'X_ORIGINAL_URL' => '/foo/bar',
-                ),
-                array(),
-                '/foo/bar',
-            ),
-            array(
-                array(
-                    'X_REWRITE_URL' => '/foo/bar',
-                ),
                 array(),
-                '/foo/bar',
-            ),
-            array(
-                array(),
-                array(
-                    'IIS_WasUrlRewritten' => '1',
-                    'UNENCODED_URL' => '/foo/bar',
-                ),
-                '/foo/bar',
-            ),
-            array(
-                array(
-                    'X_ORIGINAL_URL' => '/foo/bar',
-                ),
-                array(
-                    'HTTP_X_ORIGINAL_URL' => '/foo/bar',
-                ),
-                '/foo/bar',
-            ),
-            array(
-                array(
-                    'X_ORIGINAL_URL' => '/foo/bar',
-                ),
-                array(
-                    'IIS_WasUrlRewritten' => '1',
-                    'UNENCODED_URL' => '/foo/bar',
-                ),
-                '/foo/bar',
-            ),
-            array(
-                array(
-                    'X_ORIGINAL_URL' => '/foo/bar',
-                ),
                 array(
-                    'HTTP_X_ORIGINAL_URL' => '/foo/bar',
                     'IIS_WasUrlRewritten' => '1',
                     'UNENCODED_URL' => '/foo/bar',
                 ),
