CVE-2008-4146 in Addalink
Summary
by MITRE
Addalink 1.0 beta 4 and earlier allows remote attackers to (1) approve web-site additions via a modified approved field and (2) change the visit-counter value via a modified counter field.
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Analysis
by VulDB Data Team • 11/04/2024
The vulnerability identified as CVE-2008-4146 affects Addalink version 1.0 beta 4 and earlier, representing a critical security flaw in web application input validation and access control mechanisms. This issue stems from insufficient sanitization of user-supplied data within the application's backend processing logic, allowing malicious actors to manipulate core functional parameters through crafted input modifications. The vulnerability specifically targets two distinct but related aspects of the application's data handling processes, creating opportunities for unauthorized modification of website approval statuses and visit counter metrics.
The technical implementation of this vulnerability resides in the application's failure to properly validate and sanitize input parameters before processing user requests. Attackers can exploit this weakness by directly modifying the approved field value to approve unauthorized websites or manipulate the counter field to alter visit statistics. This represents a classic example of insecure input handling where the application trust model is violated, allowing remote attackers to bypass intended access controls and modify critical application data. The vulnerability demonstrates poor adherence to secure coding practices and highlights the absence of proper parameter validation and access control enforcement within the application's processing pipeline.
From an operational impact perspective, this vulnerability creates significant risks for website administrators and users who rely on the integrity of the approval system and visit counter metrics. The ability to approve unauthorized websites compromises the application's content management integrity, potentially allowing malicious content to be published without proper review processes. Additionally, manipulating visit counters affects the accuracy of analytics and user engagement metrics, which could impact business decisions, advertising revenue, and user trust in the platform's reliability. The remote nature of the attack means that threat actors can exploit this vulnerability from any location without requiring physical access to the system or knowledge of legitimate credentials.
The vulnerability aligns with CWE-20, which describes improper input validation, and represents a form of privilege escalation through data manipulation. From an attacker's perspective, this issue falls under the MITRE ATT&CK framework's technique T1078 for valid accounts and T1566 for phishing, as attackers can leverage this vulnerability to modify application data and potentially gain further access. The lack of proper input validation creates a persistent security gap that could be exploited for additional attacks, including data tampering, information disclosure, and potential system compromise. Organizations should implement proper input sanitization, parameter validation, and access control mechanisms to prevent such vulnerabilities from being exploited in production environments.
Mitigation strategies for this vulnerability should include immediate implementation of input validation and sanitization controls, proper parameter binding to prevent direct field manipulation, and enforcement of access controls to ensure only authorized users can modify critical application data. The application should validate all input parameters against expected formats and ranges, implement proper authentication and authorization checks before allowing modifications to approval status or counter values, and log all modification attempts for security monitoring purposes. Regular security assessments and code reviews should be conducted to identify and remediate similar input validation weaknesses that could exist in other application components.