CVE-2002-2128 in w-Agora
Summary
by MITRE
editform.php in w-Agora 4.1.5 allows local users to execute arbitrary PHP code via .. (dot dot) sequences in the file parameter.
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Analysis
by VulDB Data Team • 08/30/2025
The vulnerability identified as CVE-2002-2128 affects w-Agora version 4.1.5, specifically within the editform.php component. This represents a classic path traversal attack vector that exploits improper input validation mechanisms. The flaw manifests when the application processes file parameters without adequate sanitization, allowing attackers to manipulate directory traversal sequences. The use of double dot sequences .. in the file parameter enables unauthorized access to files outside the intended directory structure, potentially exposing sensitive system resources.
This vulnerability stems from inadequate validation of user-supplied input within the web application's file handling mechanism. The technical implementation fails to properly sanitize or validate the file parameter, creating an opportunity for attackers to manipulate the application's file resolution process. The flaw operates at the application level where user input directly influences file system operations, making it particularly dangerous as it can lead to arbitrary code execution. The vulnerability is classified as a local privilege escalation vector since it allows execution of PHP code on the target system, which can be leveraged to gain unauthorized access to system resources.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides a pathway for complete system compromise. Attackers can leverage this flaw to execute malicious PHP code with the privileges of the web server process, potentially leading to full system infiltration. The vulnerability affects the application's integrity and confidentiality by allowing unauthorized access to files that should remain protected. From a security perspective, this represents a critical weakness in the application's input validation and access control mechanisms, creating potential for data breaches, system takeover, and persistent backdoor establishment.
Mitigation strategies for CVE-2002-2128 should focus on implementing robust input validation and sanitization measures. The application should employ strict parameter validation that rejects or normalizes directory traversal sequences before processing user input. Security controls should include implementing proper access controls that limit file system access to authorized directories only. The fix requires modifying the editform.php script to sanitize all file parameters through proper path validation and ensuring that the application does not allow traversal outside of designated directories. Organizations should also implement web application firewalls and input filtering mechanisms to prevent exploitation attempts. This vulnerability aligns with CWE-22 Path Traversal and can be mapped to ATT&CK technique T1059.007 for PHP code execution, emphasizing the need for comprehensive application security measures including proper input validation, access control enforcement, and regular security patching to prevent exploitation of such fundamental flaws in web applications.