CVE-2008-6411 in Explay
Summary
by MITRE
Explay CMS 2.1 and earlier allows remote attackers to bypass authentication and gain administrative access by setting the login cookie to 1.
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Analysis
by VulDB Data Team • 11/04/2024
The vulnerability described in CVE-2008-6411 represents a critical authentication bypass flaw in Explay CMS versions 2.1 and earlier. This vulnerability resides in the application's session management and authentication mechanisms, specifically within how the system validates administrative access. The flaw manifests when an attacker manipulates the login cookie value to 1, effectively circumventing the normal authentication process and granting unauthorized administrative privileges. This type of vulnerability falls under the category of insecure direct object references and weak authentication mechanisms, as outlined in CWE-285 and CWE-305 respectively. The vulnerability demonstrates a fundamental failure in the application's security design where cookie-based authentication is not properly validated or secured against manipulation.
The technical implementation of this vulnerability exploits the trust placed in client-side cookie values without proper server-side verification. When the Explay CMS application processes user authentication requests, it appears to rely on a simple cookie value check rather than implementing robust authentication tokens or session management protocols. The value of 1 in the login cookie likely corresponds to a hardcoded administrative flag that should only be set by the application itself upon successful authentication. This naive approach to authentication validation creates a path for any remote attacker to assume administrative roles without possessing valid credentials or following proper authentication procedures. The vulnerability is particularly concerning because it operates entirely at the application layer without requiring complex exploitation techniques or additional attack vectors.
The operational impact of this vulnerability extends far beyond simple unauthorized access, as it provides attackers with complete administrative control over the CMS installation. Once authenticated, an attacker can modify website content, add or remove users, access sensitive data, and potentially use the compromised system as a launching point for further attacks against the broader network infrastructure. This vulnerability directly maps to attack techniques described in the MITRE ATT&CK framework under T1078 for valid accounts and T1566 for credential harvesting, though in this case the credential bypass occurs without traditional harvesting methods. The impact is particularly severe for organizations relying on Explay CMS for critical web applications, as the vulnerability allows for complete system compromise with minimal technical expertise required from the attacker.
Mitigation strategies for this vulnerability should focus on implementing proper authentication mechanisms and input validation. Organizations must ensure that cookie values are not trusted without proper server-side validation and that administrative privileges are granted only through legitimate authentication processes. The recommended approach includes implementing proper session management with unique, random session tokens that cannot be easily guessed or manipulated. Additionally, the application should validate all authentication-related parameters server-side and implement proper access control checks that do not rely on client-provided values for critical system functions. Security headers should be implemented to prevent cookie manipulation, and the application should enforce strict input validation on all parameters that determine user privileges. Regular security audits and penetration testing should be conducted to identify similar authentication bypass vulnerabilities, and the CMS should be updated to a version that addresses this specific flaw. This vulnerability highlights the importance of following secure coding practices and proper authentication design principles as outlined in OWASP Top 10 and NIST cybersecurity frameworks.