CVE-2008-4602 in Post Affiliate Pro
Summary
by MITRE
Directory traversal vulnerability in index.php in Post Affiliate Pro 2.0 allows remote authenticated users to read and possibly execute arbitrary local files via a .. (dot dot) in the md parameter.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 11/08/2024
The vulnerability identified as CVE-2008-4602 represents a critical directory traversal flaw in Post Affiliate Pro version 2.0, specifically within the index.php script. This security weakness enables authenticated attackers to exploit a path traversal mechanism by manipulating the md parameter through the use of .. (dot dot) sequences, thereby gaining unauthorized access to local files on the affected system. The vulnerability stems from insufficient input validation and sanitization of user-supplied parameters, allowing malicious actors to navigate beyond the intended directory structure and potentially access sensitive system files or execute arbitrary code.
The technical exploitation of this vulnerability occurs when an authenticated user submits a specially crafted request containing directory traversal sequences in the md parameter of the index.php script. The application fails to properly validate or sanitize the input, allowing the .. sequences to be interpreted as directory navigation commands. This flaw enables attackers to traverse the file system hierarchy and access files that should remain restricted, potentially leading to information disclosure, system compromise, or unauthorized code execution. The vulnerability is classified under CWE-22 as "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", which is a well-documented weakness in software applications that fail to properly validate file paths.
The operational impact of this directory traversal vulnerability extends beyond simple information disclosure, as authenticated attackers can potentially execute arbitrary code on the target system. This capability allows for privilege escalation, data exfiltration, and further exploitation within the network environment. The vulnerability affects the integrity and confidentiality of the Post Affiliate Pro application, potentially exposing sensitive business data, configuration files, and system credentials. Attackers can leverage this flaw to gain deeper access to the underlying infrastructure, making it a significant concern for organizations relying on the platform for affiliate marketing operations and financial tracking.
Security mitigations for CVE-2008-4602 should focus on implementing proper input validation and sanitization mechanisms within the application. The most effective approach involves implementing strict parameter validation that rejects or filters out directory traversal sequences such as .., ., and similar patterns before processing user input. Organizations should also implement proper access controls and privilege separation to limit the damage that can be caused by successful exploitation. Additionally, the implementation of a secure coding framework that prevents path traversal attacks should be enforced throughout the application development lifecycle. The remediation aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter and T1566.001 for Phishing, as attackers can use this vulnerability to establish persistent access and move laterally within the network. Regular security assessments and code reviews should be conducted to identify and remediate similar vulnerabilities in other applications, particularly those handling user-supplied input in file operations. The vulnerability highlights the importance of following secure coding practices and implementing defense-in-depth strategies to protect against path traversal attacks that remain prevalent in web applications.