src/content/browser/security_exploit_browsertest.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/command_line.h"
   6 #include "base/containers/hash_tables.h"
   7 #include "content/browser/dom_storage/dom_storage_context_wrapper.h"
   8 #include "content/browser/dom_storage/session_storage_namespace_impl.h"
   9 #include "content/browser/frame_host/navigator.h"
  10 #include "content/browser/renderer_host/render_view_host_factory.h"
  11 #include "content/browser/renderer_host/render_view_host_impl.h"
  12 #include "content/browser/web_contents/web_contents_impl.h"
  13 #include "content/common/view_messages.h"
  14 #include "content/public/browser/browser_context.h"
  15 #include "content/public/browser/storage_partition.h"
  16 #include "content/public/common/content_switches.h"
  17 #include "content/public/test/browser_test_utils.h"
  18 #include "content/public/test/content_browser_test.h"
  19 #include "content/public/test/content_browser_test_utils.h"
  20 #include "content/public/test/test_utils.h"
  21 #include "content/shell/browser/shell.h"
  22
  23 namespace content {
  24
  25 namespace {
  26
  27 // This is a helper function for the tests which attempt to create a
  28 // duplicate RenderViewHost or RenderWidgetHost. It tries to create two objects
  29 // with the same process and routing ids, which causes a collision.
  30 // It creates a couple of windows in process 1, which causes a few routing ids
  31 // to be allocated. Then a cross-process navigation is initiated, which causes a
  32 // new process 2 to be created and have a pending RenderViewHost for it. The
  33 // routing id of the RenderViewHost which is target for a duplicate is set
  34 // into |target_routing_id| and the pending RenderViewHost which is used for
  35 // the attempt is the return value.
  36 RenderViewHostImpl* PrepareToDuplicateHosts(Shell* shell,
  37                                             int* target_routing_id) {
  38   GURL foo("http://foo.com/files/simple_page.html");
  39
  40   // Start off with initial navigation, so we get the first process allocated.
  41   NavigateToURL(shell, foo);
  42
  43   // Open another window, so we generate some more routing ids.
  44   ShellAddedObserver shell2_observer;
  45   EXPECT_TRUE(ExecuteScript(
  46       shell->web_contents(), "window.open(document.URL + '#2');"));
  47   Shell* shell2 = shell2_observer.GetShell();
  48
  49   // The new window must be in the same process, but have a new routing id.
  50   EXPECT_EQ(shell->web_contents()->GetRenderViewHost()->GetProcess()->GetID(),
  51             shell2->web_contents()->GetRenderViewHost()->GetProcess()->GetID());
  52   *target_routing_id =
  53       shell2->web_contents()->GetRenderViewHost()->GetRoutingID();
  54   EXPECT_NE(*target_routing_id,
  55             shell->web_contents()->GetRenderViewHost()->GetRoutingID());
  56
  57   // Now, simulate a link click coming from the renderer.
  58   GURL extension_url("https://bar.com/files/simple_page.html");
  59   WebContentsImpl* wc = static_cast<WebContentsImpl*>(shell->web_contents());
  60   wc->GetFrameTree()->root()->navigator()->RequestOpenURL(
  61       wc->GetFrameTree()->root()->current_frame_host(), extension_url,
  62       Referrer(), CURRENT_TAB,
  63       false, true);
  64
  65   // Since the navigation above requires a cross-process swap, there will be a
  66   // pending RenderViewHost. Ensure it exists and is in a different process
  67   // than the initial page.
  68   RenderViewHostImpl* pending_rvh =
  69       wc->GetRenderManagerForTesting()->pending_render_view_host();
  70   EXPECT_TRUE(pending_rvh != NULL);
  71   EXPECT_NE(shell->web_contents()->GetRenderViewHost()->GetProcess()->GetID(),
  72             pending_rvh->GetProcess()->GetID());
  73
  74   return pending_rvh;
  75 }
  76
  77 }  // namespace
  78
  79
  80 // The goal of these tests will be to "simulate" exploited renderer processes,
  81 // which can send arbitrary IPC messages and confuse browser process internal
  82 // state, leading to security bugs. We are trying to verify that the browser
  83 // doesn't perform any dangerous operations in such cases.
  84 class SecurityExploitBrowserTest : public ContentBrowserTest {
  85  public:
  86   SecurityExploitBrowserTest() {}
  87   void SetUpCommandLine(CommandLine* command_line) override {
  88     ASSERT_TRUE(test_server()->Start());
  89
  90     // Add a host resolver rule to map all outgoing requests to the test server.
  91     // This allows us to use "real" hostnames in URLs, which we can use to
  92     // create arbitrary SiteInstances.
  93     command_line->AppendSwitchASCII(
  94         switches::kHostResolverRules,
  95         "MAP * " + test_server()->host_port_pair().ToString() +
  96             ",EXCLUDE localhost");
  97   }
  98 };
  99
 100 // Ensure that we kill the renderer process if we try to give it WebUI
 101 // properties and it doesn't have enabled WebUI bindings.
 102 IN_PROC_BROWSER_TEST_F(SecurityExploitBrowserTest, SetWebUIProperty) {
 103   GURL foo("http://foo.com/files/simple_page.html");
 104
 105   NavigateToURL(shell(), foo);
 106   EXPECT_EQ(0,
 107       shell()->web_contents()->GetRenderViewHost()->GetEnabledBindings());
 108
 109   content::RenderProcessHostWatcher terminated(
 110       shell()->web_contents(),
 111       content::RenderProcessHostWatcher::WATCH_FOR_PROCESS_EXIT);
 112   shell()->web_contents()->GetRenderViewHost()->SetWebUIProperty(
 113       "toolkit", "views");
 114   terminated.Wait();
 115 }
 116
 117 // This is a test for crbug.com/312016 attempting to create duplicate
 118 // RenderViewHosts. SetupForDuplicateHosts sets up this test case and leaves
 119 // it in a state with pending RenderViewHost. Before the commit of the new
 120 // pending RenderViewHost, this test case creates a new window through the new
 121 // process.
 122 IN_PROC_BROWSER_TEST_F(SecurityExploitBrowserTest,
 123                        AttemptDuplicateRenderViewHost) {
 124   int duplicate_routing_id = MSG_ROUTING_NONE;
 125   RenderViewHostImpl* pending_rvh =
 126       PrepareToDuplicateHosts(shell(), &duplicate_routing_id);
 127   EXPECT_NE(MSG_ROUTING_NONE, duplicate_routing_id);
 128
 129   // Since this test executes on the UI thread and hopping threads might cause
 130   // different timing in the test, let's simulate a CreateNewWindow call coming
 131   // from the IO thread.
 132   ViewHostMsg_CreateWindow_Params params;
 133   DOMStorageContextWrapper* dom_storage_context =
 134       static_cast<DOMStorageContextWrapper*>(
 135           BrowserContext::GetStoragePartition(
 136               shell()->web_contents()->GetBrowserContext(),
 137               pending_rvh->GetSiteInstance())->GetDOMStorageContext());
 138   scoped_refptr<SessionStorageNamespaceImpl> session_storage(
 139       new SessionStorageNamespaceImpl(dom_storage_context));
 140   // Cause a deliberate collision in routing ids.
 141   int main_frame_routing_id = duplicate_routing_id + 1;
 142   pending_rvh->CreateNewWindow(duplicate_routing_id,
 143                                main_frame_routing_id,
 144                                params,
 145                                session_storage.get());
 146
 147   // If the above operation doesn't cause a crash, the test has succeeded!
 148 }
 149
 150 // This is a test for crbug.com/312016. It tries to create two RenderWidgetHosts
 151 // with the same process and routing ids, which causes a collision. It is almost
 152 // identical to the AttemptDuplicateRenderViewHost test case.
 153 IN_PROC_BROWSER_TEST_F(SecurityExploitBrowserTest,
 154                        AttemptDuplicateRenderWidgetHost) {
 155   int duplicate_routing_id = MSG_ROUTING_NONE;
 156   RenderViewHostImpl* pending_rvh =
 157       PrepareToDuplicateHosts(shell(), &duplicate_routing_id);
 158   EXPECT_NE(MSG_ROUTING_NONE, duplicate_routing_id);
 159
 160   // Since this test executes on the UI thread and hopping threads might cause
 161   // different timing in the test, let's simulate a CreateNewWidget call coming
 162   // from the IO thread.  Use the existing window routing id to cause a
 163   // deliberate collision.
 164   pending_rvh->CreateNewWidget(duplicate_routing_id, blink::WebPopupTypeSelect);
 165
 166   // If the above operation doesn't crash, the test has succeeded!
 167 }
 168
 169 }  // namespace content