CVE-2003-0272 in Miniportal
Summary
by MITRE
admin.php in miniPortail allows remote attackers to gain administrative privileges by setting the miniPortailAdmin cookie to an "adminok" value.
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Analysis
by VulDB Data Team • 05/17/2019
The vulnerability described in CVE-2003-0272 represents a critical authentication bypass flaw within the miniPortail web application that enables remote attackers to escalate their privileges from regular user to administrative level. This issue resides in the admin.php script which governs administrative functions within the application. The vulnerability stems from improper input validation and insecure credential handling mechanisms that fail to properly verify user authentication status before granting access to administrative features. The flaw specifically manifests when an attacker manipulates the miniPortailAdmin cookie value to contain the string "adminok", thereby circumventing the normal authentication process and gaining unrestricted administrative access to the system.
From a technical perspective, this vulnerability constitutes a classic case of insecure direct object reference combined with weak session management practices. The application relies on a client-side cookie mechanism for authentication validation rather than implementing proper server-side session verification or cryptographic authentication tokens. This design flaw allows attackers to directly manipulate the cookie value without requiring legitimate credentials or knowledge of administrative passwords. The vulnerability aligns with CWE-285, which addresses improper authorization issues, and CWE-312, which covers exposure of sensitive information through cleartext storage of credentials. The attack vector operates entirely through HTTP cookie manipulation, making it particularly dangerous as it requires no complex exploitation techniques beyond basic web request modification.
The operational impact of this vulnerability is severe and far-reaching within the context of web application security. An attacker who successfully exploits this vulnerability can gain complete control over the miniPortail application, including the ability to modify or delete content, add or remove users, access sensitive data, and potentially use the compromised system as a launch point for further attacks within the network. The vulnerability essentially provides a backdoor that bypasses all normal authentication mechanisms, making it particularly dangerous for applications that handle sensitive information or serve as administrative interfaces. This type of flaw can lead to complete system compromise and data breaches, especially when the application is deployed in production environments where it might be handling user data, configuration information, or business-critical content.
Mitigation strategies for this vulnerability must address both the immediate security flaw and broader architectural issues within the application. The most direct fix involves implementing proper server-side session management and authentication verification mechanisms that do not rely on client-side cookie manipulation for privilege escalation. The application should validate user credentials through proper authentication procedures before granting administrative access, and implement cryptographic session tokens that cannot be easily manipulated by attackers. Additionally, the application should employ input validation and sanitization measures to prevent cookie value tampering, and implement proper access control lists that enforce authorization checks at every administrative function call. Organizations should also consider implementing the principle of least privilege, ensuring that administrative functions are only accessible through legitimate authentication processes and that session management follows industry best practices such as those outlined in the OWASP Session Management Cheat Sheet. This vulnerability demonstrates the critical importance of server-side authentication validation and proper session management as fundamental security controls that must be implemented to prevent unauthorized privilege escalation attacks.