CVE-2008-3319 in Links
Summary
by MITRE
admin/index.php in Maian Links 3.1 and earlier allows remote attackers to bypass authentication and gain administrative access by sending an arbitrary links_cookie cookie.
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Analysis
by VulDB Data Team • 11/01/2024
The vulnerability identified as CVE-2008-3319 represents a critical authentication bypass flaw in Maian Links version 3.1 and earlier systems. This security weakness resides within the administrative interface at admin/index.php, where the application fails to properly validate the links_cookie cookie parameter. The flaw allows remote attackers to bypass the standard authentication mechanisms and directly assume administrative privileges without proper credentials. The vulnerability stems from insufficient input validation and improper session management within the web application's authentication flow, creating a pathway for unauthorized access to sensitive administrative functions.
The technical implementation of this vulnerability exploits the application's reliance on cookie-based authentication without adequate verification of cookie integrity or authenticity. When an attacker sends a crafted links_cookie value to the admin/index.php endpoint, the system accepts this parameter without proper cryptographic validation or session token verification. This design flaw aligns with CWE-287, which addresses improper authentication issues in software systems. The vulnerability demonstrates a classic case of weak session management where the application trusts client-supplied data without sufficient server-side validation, effectively undermining the entire authentication framework.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it provides attackers with complete administrative control over the Maian Links system. Once authenticated, an attacker can modify or delete all links within the system, alter user permissions, access sensitive configuration data, and potentially use the compromised administrative account as a foothold for further attacks within the network. This vulnerability directly maps to ATT&CK technique T1078.004, which covers legitimate credentials, and represents a significant risk to system integrity and data confidentiality. The remote nature of the attack means that exploitation can occur from any location without requiring physical access to the system or knowledge of valid user credentials.
Mitigation strategies for this vulnerability should include immediate implementation of proper cookie validation mechanisms and session management protocols. Organizations should ensure that all authentication cookies contain cryptographically secure tokens that are verified against server-side session data. The fix requires implementing proper authentication checks that validate cookie authenticity before granting administrative access, utilizing techniques such as signed tokens, session identifiers with expiration mechanisms, or implementing proper CSRF protection measures. Additionally, regular security audits should be conducted to identify similar authentication bypass vulnerabilities in other components of the application stack, particularly focusing on cookie handling and session management practices that align with industry standards such as those defined in OWASP Top Ten and NIST SP 800-53 security controls.