CVE-2007-0697 in ACGVannu
Summary
by MITRE
index2.php in ACGVannu 1.3 and earlier allows remote attackers to change the password or profile of a user via a modified id parameter, related to templates/modif.html. NOTE: some of these details are obtained from third party information.
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Analysis
by VulDB Data Team • 08/19/2024
The vulnerability identified as CVE-2007-0697 affects ACGVannu version 1.3 and earlier, representing a critical authorization flaw that enables remote attackers to manipulate user accounts without proper authentication. This issue resides within the index2.php script and specifically targets the templates/modif.html component, creating a pathway for unauthorized privilege escalation and account takeover. The vulnerability stems from insufficient input validation and improper access control mechanisms that fail to verify the authenticity of user requests before processing sensitive operations.
The technical flaw manifests through the manipulation of the id parameter within the modification process, allowing attackers to submit crafted requests that bypass normal authentication procedures. When the application processes a modified id parameter, it does not adequately validate whether the requesting user has legitimate authorization to modify the target account. This weakness creates a direct path for attackers to assume control of arbitrary user accounts, potentially enabling them to change passwords, modify profile information, or gain elevated privileges within the system. The vulnerability aligns with CWE-285, which addresses improper authorization issues in software systems.
The operational impact of this vulnerability extends beyond simple credential theft, as it provides attackers with persistent access to user accounts and potentially the entire application infrastructure. Remote exploitation means that attackers can leverage this flaw from any location without requiring physical access or local system compromise. Successful exploitation could result in unauthorized data access, account takeovers, service disruption, and potential lateral movement within the network. This vulnerability particularly affects web applications that rely on user session management and authentication tokens, making it a prime target for automated exploitation tools.
Mitigation strategies should focus on implementing robust input validation and access control measures to prevent unauthorized modifications. The primary solution involves adding proper authentication checks and parameter validation before processing any account modification requests. Developers should implement proper session management protocols, including token-based authentication, and ensure that all user actions are verified against proper authorization levels. Additionally, input sanitization and parameter validation should be enforced at multiple layers of the application architecture. Organizations should also consider implementing web application firewalls and monitoring systems to detect anomalous access patterns that might indicate exploitation attempts. The vulnerability demonstrates the importance of following secure coding practices and adhering to the principle of least privilege as outlined in various cybersecurity frameworks and standards.