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Attackers use variations like the one in your keyword to evade Web Application Firewalls (WAFs) and basic filters: Path Traversal | OWASP Foundation
In the world of cybersecurity, malicious URLs are a common threat vector used by attackers to gain unauthorized access to sensitive information or compromise systems. One such pattern that has been observed in recent times is the "-page-....-2F-2F....-2F-2F....-2F-2Fetc-2Fpasswd" URL sequence. This article aims to dissect this malicious URL pattern, understand its implications, and provide insights on how to protect against such threats.
: RCE often leads to attackers gaining a shell on the system, allowing them to pivot, escalate privileges, and compromise the entire network. Remediation and Prevention Strategies -page-....-2F-2F....-2F-2F....-2F-2Fetc-2Fpasswd
Path traversal attacks exploit vulnerabilities in the way a web application handles user-input paths. By manipulating these paths, an attacker can navigate the file system, potentially accessing files that are not intended to be exposed. The "/etc/passwd" file, often used in demonstrations, is a prime target because it is publicly readable and contains a list of all system accounts, along with information about their privileges.
Use code with caution.
While WAFs are not a complete solution, a well‑configured WAF can block obvious traversal patterns, including encoded and double‑encoded variants. However, rule sets must be kept up‑to‑date, because attackers constantly invent new obfuscations like the ....%2F%2F pattern we discussed. This public link is valid for 7 days
It looks like you’ve provided a pattern resembling a URL-encoded directory traversal or file inclusion attempt (e.g., -page-....-2F-2F....-2F-2F....-2F-2Fetc-2Fpasswd ). This decodes to something like -page-../../../../etc/passwd .
Never manually concatenate user-supplied strings into file paths. Use your programming language's built-in tools to resolve paths and explicitly verify that the resulting path stays within the intended directory.
Local File Inclusion vulnerabilities typically manifest in dynamic web applications that pass user input directly into file system operations without sufficient validation. Consider this vulnerable PHP implementation: Can’t copy the link right now
The obfuscated path "-page-....-2F-2F....-2F-2F....-2F-2Fetc-2Fpasswd" is indicative of such an attack. Here, "2F" represents the URL-encoded forward slash, suggesting that the attacker is trying to "dot dot" their way up the directory tree ( ../ ) to reach the root directory and then navigate to "/etc/passwd".
Never trust user input. Use an allowlist of permitted filenames rather than accepting arbitrary paths.
$page = $_GET['page']; include("/var/www/pages/" . $page . ".php");