7 Tips to Prevent your Website from File Vulnerability

Tips to Prevent your Website from File Vulnerability - wholikeit.com

Tips to Prevent your Website from File Vulnerability - wholikeit.com

File vulnerability or remote file inclusion is a hacking procedure, which eventually allows hacker to upload malicious file to your website using special script. File vulnerability can cause great damage to your website and hacker may get complete access of your server system. This type of exploit is generally caused out of poor validation checks on the websites. The extensive process of file vulnerabilities allows hackers to upload malicious or harmful PHP files on the website and execute those codes using web browser. By uploading these malicious files, hacker can get the complete control of the application server.

Some preventive measures to avoid file vulnerability are further discussed below:–

1) The validation check on the website should be strong and powerful, such that hacker would not get an easy access to the application server. Powerful validation check inhibits foreign source from entering the server system code. Poor or improper validation checks can lead to code execution or XSS attack using JavaScript.

2) For every file uploading process there should be an authentication process. This will help to keep track of the user’s entry and check the files uploaded by him/her.

3) Another method to avoid file vulnerability is to store the uploaded files at a secured location, not reached out by the web browser. If the hacker cannot connect the code via web browser, the code will remain inactive and cause less harm to the application server of the website.

4) Always try to define the valid file names, which the user should be allowed to upload on the website. Any unknown file type, will automatically not accepted by the file uploading system. These will greatly reduce the possibility of file inclusion and avoiding spammers entering your website.

5) Always try avoiding appending file paths directly. Make those file paths hard coded and accesses using an index variable.

6) It is extremely important to prevent the API to allow any kind of file vulnerability inclusion from a directory or directories. By using this process you can ensure to restrict any potential attack to cause directory traversal.

7) The uploaded file names and extensions should be changed before storage. This will prevent hackers to execute those files. If there is a need of preserving the original file names, they can be stored in a secondary lookup table, which should be located either in a database or XML file.

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