Re: Totaljs CMS authenticated path traversal (could lead to RCE)

                							

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<h1 class="m-title">Re: Totaljs CMS authenticated path traversal (could lead to	RCE)</h1>
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<em>From</em>: paw &lt;riccardo.krauter () gmail com&gt;


<em>Date</em>: Fri, 6 Sep 2019 14:51:35 +0200


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<pre style="margin: 0em;">Update:

[+] CVE-id: CVE-2019-15952

Il 30/08/19 19:45, paw ha scritto:
</pre><blockquote style="border-left: #5555EE solid 0.2em; margin: 0em; padding-left: 0.85em"><pre style="margin: 0em;">
*Totaljs CMS authenticated path traversal (could lead to RCE)*

[+] Author/Discoverer: Riccardo Krauter @CertimeterGroup

[+] Title: Totaljs CMS authenticated path traversal (could lead to RCE)

[+] Affected software: Totaljs CMS 12.0

</pre><tt>[+] Description: An authenticated user with “Pages” privilege can 
</tt><tt>include via path traversal attack (../) .html files that are outside 
</tt><tt>the permitted directory. Also if the page contains template directive, 
</tt><tt>then the directive will be server side processed, so if a user can 
</tt><tt>control the content of a .html file, then can inject payload with 
</tt><tt>malicious template directive to gain RemoteCodeExecution.
</tt><pre style="margin: 0em;">The exploit will work only with .html extension.

[+] Step to reproduce:

1) go to <a rel="nofollow" href="http://localhost:8000/admin/pages/">http://localhost:8000/admin/pages/</a>
2) click on create button
3) enable burp proxy forwarding
</pre><tt>4) select a template from the menu this will send a POST request to 
</tt><tt>the API
</tt><tt>5) from burp modify the json body request by adding the path traversal 
</tt><tt>on the template parameter like this 
</tt><tt>{"body":"","template":"../../../../../../../../../../../../var/www/html/test_rce"}
</tt><pre style="margin: 0em;">do NOT add the .html extension it will be added to the back-end API
6) send the request

[+] Project link: <a rel="nofollow" href="https://github.com/totaljs/cms">https://github.com/totaljs/cms</a>

</pre><tt>[+] Original report and details: 
</tt><tt><a rel="nofollow" href="https://github.com/beerpwn/CVE/blob/master/Totaljs_disclosure_report/report_final.pdf">https://github.com/beerpwn/CVE/blob/master/Totaljs_disclosure_report/report_final.pdf</a>
</tt><pre style="margin: 0em;">
[+] Timeline:

- 13/02/2019 -&gt; reported the issue to the vendor

.... many ping here

- 18/06/2019 -&gt; pinged the vendor last time

- 29/08/2019 -&gt; reported to seclist

</pre></blockquote><pre style="margin: 0em;">
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<h3 class="m-thread">Current thread:</h3>
<ul class="thread">
<li><a name="2" href="2">Totaljs CMS authenticated path traversal (could lead to RCE)</a> <em>paw (Sep 03)</em>
<ul>
<li><strong>Re: Totaljs CMS authenticated path traversal (could lead to	RCE)</strong> <em>paw (Sep 06)</em>
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