RenderFrameProxyHost::OnOpenURL needs to validate resource request body.

content/browser/frame_host/render_frame_host_impl.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/frame_host/render_frame_host_impl.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 1220 matching lines @@
   frame_tree_->RemoveFrame(frame_tree_node_);
 }
 
 void RenderFrameHostImpl::OnFrameFocused() {
   delegate_->SetFocusedFrame(frame_tree_node_, GetSiteInstance());
 }
 
 void RenderFrameHostImpl::OnOpenURL(const FrameHostMsg_OpenURL_Params& params) {
   GURL validated_url(params.url);
   GetProcess()->FilterURL(false, &validated_url);
+  if (!ChildProcessSecurityPolicyImpl::GetInstance()->CanReadRequestBody(
+          GetSiteInstance(), params.resource_request_body)) {
+    bad_message::ReceivedBadMessage(GetProcess(),
+                                    bad_message::RFH_ILLEGAL_UPLOAD_PARAMS);
+    return;
+  }
 
   if (params.is_history_navigation_in_new_child) {
     // Try to find a FrameNavigationEntry that matches this frame instead, based
     // on the frame's unique name.  If this can't be found, fall back to the
     // default params using RequestOpenURL below.
     if (frame_tree_node_->navigator()->NavigateNewChildFrame(this,
                                                              validated_url))
       return;
   }
 
@@ skipping 2837 matching lines @@
 }
 
 void RenderFrameHostImpl::ForwardGetInterfaceToRenderFrame(
     const std::string& interface_name,
     mojo::ScopedMessagePipeHandle pipe) {
   GetRemoteInterfaces()->GetInterface(interface_name, std::move(pipe));
 }
 #endif
 
 }  // namespace content