Concrete5 5.7.3.1 Local File Inclusion

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Concrete5 <= 5.7.3.1 (Application::dispatch) Local File Inclusion Vulnerability  
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[-] Software Link:  
  
https://www.concrete5.org/  
  
  
[-] Affected Versions:  
  
Version 5.7.3.1 and probably other versions.  
  
  
[-] Vulnerability Description:  
  
The vulnerable code is located within the "Application::dispatch()" method:  
  
326. public function dispatch(Request $request)  
327. {  
328. if ($this->installed) {  
329. $response = $this->getEarlyDispatchResponse();  
330. }  
331. if (!isset($response)) {  
332. $collection = Route::getList();  
333. $context = new \Symfony\Component\Routing\RequestContext();  
334. $context->fromRequest($request);  
335. $matcher = new UrlMatcher($collection, $context);  
336. $path = rtrim($request->getPathInfo(), '/') . '/';  
337. try {  
338. $request->attributes->add($matcher->match($path));  
339. $matched = $matcher->match($path);  
340. $route = $collection->get($matched['_route']);  
341. Route::setRequest($request);  
342. $response = Route::execute($route, $matched);  
  
The vulnerability exists because the path for the incoming request is retrieved using the  
"Request::getPathInfo()" method from the Symfony framework, which allows to specify the path  
for the request within some HTTP headers (like "X-Original-URL" and some others). So, it might  
be possible to specify paths containing "dot-dot-slash" sequences without worrying about URL  
encoding and path normalization done by the web server. This could be exploited by unauthenticated  
attackers to include arbitrary .php files located outside the Concrete5 root directory or from the  
Concrete5 codebase itself (potentially leading to unauthorized access to certain functionalities)  
by sending an HTTP request like this:  
  
GET /concrete5/index.php HTTP/1.1  
Host: localhost  
X-Original-Url: /tools/../../index  
Connection: keep-alive  
  
The dispatching process for this request will try to re-include the index.php file,  
and this will end up with an unexpected error.  
  
  
[-] Solution:  
  
Update to a fixed version.  
  
  
[-] Disclosure Timeline:  
  
[05/05/2015] - Vulnerability details sent through HackerOne  
[02/10/2015] - CVE number requested  
[19/12/2015] - Vulnerability fixed on the GitHub repository  
[26/06/2016] - Vulnerability publicly disclosed on HackerOne  
[28/06/2016] - Publication of this advisory  
  
  
[-] CVE Reference:  
  
The Common Vulnerabilities and Exposures project (cve.mitre.org)  
has not assigned a CVE identifier for this vulnerability.  
  
  
[-] Credits:  
  
Vulnerability discovered by Egidio Romano.  
  
  
[-] Original Advisory:  
  
http://karmainsecurity.com/KIS-2016-10  
  
  
[-] Other References:  
  
https://hackerone.com/reports/59665  
`