Directory Traversal
Directory Traversal is a web application vulnerability. It allows an attacker to access files and directories stored outside the intended web root folder. Attackers exploit this by manipulating file paths in URLs or HTTP requests. This can lead to unauthorized access to sensitive data, configuration files, or even system files on the server.
Understanding
Attackers use sequences like “../” or “..” to navigate up the directory tree. For example
Where it appears
In practice
Commonly misread
if a web application serves files from /var/www/html/files/ and an attacker requests ../../etc/passwd
they might access the system’s password file. This vulnerability often arises from insufficient input validation when handling user-supplied file names or paths. Developers must sanitize all user input that references file system resources. Proper validation ensures that path requests stay within designated boundaries
preventing unauthorized access to critical server resources.
Organizations are responsible for implementing robust input validation and access controls to prevent directory traversal attacks. Governance policies should mandate secure coding practices and regular security testing
Questions
including penetration testing. The risk impact includes data breaches
system compromise
and reputational damage. Strategically
preventing such vulnerabilities is crucial for maintaining data integrity
confidentiality
and overall system security. It protects sensitive information and ensures compliance with data protection regulations.
How Directory Traversal Processes Identity
Context
and Access Decisions
Directory Traversal