CVE-2008-6963 in Text Link Sales
Summary
by MITRE
admin.php in TurnkeyForms Text Link Sales allows remote attackers to bypass authentication and gain administrative privileges via a direct request.
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Analysis
by VulDB Data Team • 11/11/2024
The vulnerability identified as CVE-2008-6963 affects the TurnkeyForms Text Link Sales application, specifically targeting the admin.php component. This issue represents a critical authentication bypass flaw that enables remote attackers to escalate their privileges without proper authorization. The vulnerability stems from inadequate input validation and access control mechanisms within the administrative interface, allowing malicious actors to directly access administrative functions through crafted HTTP requests.
This authentication bypass vulnerability falls under the category of improper access control as defined by CWE-285, specifically CWE-285-2 which addresses insufficient authorization in web applications. The flaw occurs when the application fails to properly verify user credentials or session tokens before granting access to administrative functions. Attackers can exploit this weakness by directly calling the admin.php script with appropriate parameters, circumventing the normal login process entirely. The vulnerability demonstrates a classic lack of proper session management and privilege validation that is fundamental to secure web application design.
The operational impact of this vulnerability is severe as it provides attackers with full administrative control over the affected system. Once exploited, malicious users can modify or delete content, alter user permissions, access sensitive data, and potentially compromise the entire web application infrastructure. The remote nature of the attack means that threat actors do not require physical access to the system or local network presence, making the vulnerability particularly dangerous. This type of flaw can lead to complete system compromise, data breaches, and unauthorized modifications to web content that can affect business operations and customer trust.
Security professionals should implement multiple layers of defense to mitigate this vulnerability. The primary recommendation involves implementing proper authentication checks within the admin.php script, ensuring that all administrative requests are properly validated against legitimate user sessions and credentials. Input validation and parameter sanitization should be strengthened to prevent direct script access attempts. Additionally, the application should enforce proper session management with secure token generation and validation mechanisms. Network-level protections such as web application firewalls and access control lists can provide additional defense in depth. The mitigation strategy should align with ATT&CK framework tactic TA0001 (Initial Access) and technique T1078 (Valid Accounts) by ensuring that unauthorized access attempts are properly blocked and monitored. Regular security audits and code reviews should be conducted to identify similar authentication bypass vulnerabilities in other components of the application stack.