CVE-2009-1621 in OpenCart
Summary
by MITRE
Directory traversal vulnerability in index.php in OpenCart 1.1.8 allows remote attackers to read arbitrary files via a .. (dot dot) in the route parameter.
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Analysis
by VulDB Data Team • 07/28/2025
The vulnerability identified as CVE-2009-1621 represents a critical directory traversal flaw within the OpenCart e-commerce platform version 1.1.8. This security weakness resides in the index.php file and specifically affects the route parameter handling mechanism. The vulnerability allows remote attackers to exploit the application's file inclusion logic by manipulating the route parameter with directory traversal sequences such as .. (dot dot). This flaw fundamentally compromises the application's ability to properly validate and sanitize user input before processing file operations.
The technical implementation of this vulnerability stems from inadequate input validation and sanitization within the OpenCart framework's routing mechanism. When the application processes the route parameter without proper restrictions on directory navigation sequences, it becomes susceptible to attackers who can manipulate the parameter to traverse the file system hierarchy. The .. (dot dot) sequence enables attackers to move up directory levels and access files that should remain protected within the application's directory structure. This type of vulnerability falls under the CWE-22 category, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks.
The operational impact of this vulnerability extends beyond simple information disclosure, as it can potentially lead to complete system compromise. Attackers who successfully exploit this vulnerability can access sensitive files including configuration files, database credentials, user data, and application source code. The ability to read arbitrary files through this vector provides threat actors with valuable information for further exploitation attempts, potentially leading to privilege escalation, data exfiltration, or system infiltration. This vulnerability directly impacts the confidentiality and integrity of the affected OpenCart installation and can result in significant financial and reputational damage to organizations relying on the platform.
Organizations utilizing OpenCart 1.1.8 should immediately implement mitigations including input validation and sanitization of all user-supplied parameters, particularly those used in file operations. The recommended approach involves implementing strict parameter validation that filters out directory traversal sequences and enforces proper path normalization. Additionally, the principle of least privilege should be applied by ensuring that the web application runs with minimal necessary permissions and that sensitive files are properly protected through file system permissions. Security patches and updates should be applied as soon as they become available from the OpenCart development team, as this vulnerability represents a well-known flaw that has been documented in various security advisories and threat intelligence reports. The ATT&CK framework categorizes this type of vulnerability under T1083 (File and Directory Discovery) and T1566 (Phishing with Malicious Attachments) as attackers often leverage such vulnerabilities to discover system files and gather intelligence for more sophisticated attacks.