CVE-2007-1509 in Rot 13
Summary
by MITRE
Directory traversal vulnerability in enkrypt.php in Sascha Schroeder krypt (aka Holtstraeter Rot 13) allows remote attackers to read arbitrary files via a .. (dot dot) in the datei parameter.
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Analysis
by VulDB Data Team • 09/08/2025
The vulnerability identified as CVE-2007-1509 represents a classic directory traversal flaw within the enkrypt.php script of Sascha Schroeder krypt, also known as Holtstraeter Rot 13. This directory traversal vulnerability specifically affects the datei parameter handling mechanism, creating a significant security risk that allows remote attackers to access arbitrary files on the affected system. The flaw stems from insufficient input validation and sanitization of user-supplied parameters, particularly those related to file paths and references within the application's file handling logic.
The technical implementation of this vulnerability occurs when the application processes the datei parameter without proper validation of the input content. Attackers can exploit this weakness by injecting directory traversal sequences such as .. (dot dot) into the parameter value, which enables them to navigate outside the intended directory structure and access files that should remain restricted. This type of vulnerability falls under the CWE-22 category, which specifically addresses "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", and aligns with the broader ATT&CK technique T1083 for discovering system information through directory traversal methods.
The operational impact of this vulnerability extends beyond simple file access, as it can potentially allow attackers to retrieve sensitive configuration files, database credentials, application source code, or other confidential information stored on the server. Remote exploitation means that an attacker does not require local system access or authentication to leverage this vulnerability, making it particularly dangerous for web applications that are publicly accessible. The consequences can include data breaches, system compromise, and potential further lateral movement within the network infrastructure.
Mitigation strategies for this vulnerability should focus on implementing proper input validation and sanitization techniques for all user-supplied parameters, particularly those used in file operations. The recommended approach includes employing allow-list validation for file paths, implementing strict directory restrictions, and ensuring that all file access operations are properly sandboxed within designated directories. Additionally, developers should adopt secure coding practices that prevent path traversal by normalizing file paths, removing special characters, and implementing proper access controls. The vulnerability demonstrates the critical importance of input validation in web applications and underscores the necessity of following security best practices such as those outlined in the OWASP Top Ten and the Secure Coding guidelines for preventing directory traversal attacks.