-page-....-2f-2f....-2f-2f....-2f-2fetc-2fpasswd ((better)) [ Tested ✔ ]

A classic, textbook example of this vulnerability is the exploitation attempt using a crafted URL, often seen in server logs as: page=../../../../etc/passwd .

The "-page-....-2F-2F....-2F-2F....-2F-2Fetc-2Fpasswd" URL pattern is a malicious sequence used by attackers to exploit vulnerabilities in web applications and servers. By understanding the anatomy of this URL and the threats it poses, system administrators and security professionals can take steps to protect against such attacks. By implementing robust security measures and best practices, we can reduce the risk of these types of attacks and safeguard sensitive information.

The /etc/passwd file is readable by all users on the system, which allows for the retrieval of usernames and associated information. However, to enhance security, passwords are no longer stored in /etc/passwd . Instead, they are kept in /etc/shadow , which is only readable by root, ensuring that only authorized users can access the passwords. -page-....-2F-2F....-2F-2F....-2F-2Fetc-2Fpasswd

: This is typically the name of the vulnerable parameter in the web application's URL or request body (e.g., ?page= ).

In this specific case, the string is an encoded attempt to "break out" of a web application's intended directory to read the sensitive system file /etc/passwd . A classic, textbook example of this vulnerability is

: Storing passwords in /etc/passwd was historically done but considered insecure. Modern systems use shadow passwords stored in /etc/shadow , which is only readable by root, enhancing security.

Directory traversal vulnerabilities have been found in thousands of web applications, content management systems, plugins, and frameworks. Some notorious cases include: By implementing robust security measures and best practices,

john:x:1001:1001:John Doe:/home/john:/bin/bash

: This is the ultimate goal. In Linux and Unix-like systems, this file contains a list of all user accounts on the server. While it doesn't usually contain passwords themselves anymore, it provides a roadmap of the system for further hacking. 2. How the Attack Works