CVE-2008-4244 in Rianxosencabos
Summary
by MITRE
Rianxosencabos CMS 0.9 allows remote attackers to bypass authentication and gain administrative access by setting the usuario and pass cookies to 1.
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Analysis
by VulDB Data Team • 11/04/2024
The vulnerability described in CVE-2008-4244 represents a critical authentication bypass flaw in the Rianxosencabos Content Management System version 0.9. This issue stems from a fundamental design flaw in the cookie-based authentication mechanism where the system fails to properly validate user credentials before granting administrative privileges. The vulnerability allows remote attackers to gain unauthorized access to administrative functions simply by manipulating specific cookies in their browser session.
The technical implementation of this vulnerability occurs through the manipulation of two specific cookies named usuario and pass within the web application's session management system. When these cookies are set to the value of 1, the CMS incorrectly interprets this as valid administrative credentials, bypassing all proper authentication procedures. This represents a classic case of insecure authentication handling where the application relies on client-side data without proper server-side validation. The flaw demonstrates poor input sanitization and authentication logic implementation, allowing attackers to escalate privileges through simple cookie manipulation rather than through legitimate authentication mechanisms.
The operational impact of this vulnerability is severe as it provides attackers with full administrative control over the affected CMS instance. This includes the ability to modify content, manage users, alter system configurations, and potentially access sensitive data stored within the CMS. The remote nature of the attack means that an attacker does not require physical access to the system or network, making this vulnerability particularly dangerous in environments where the CMS is publicly accessible. The vulnerability essentially eliminates the authentication barrier that should protect administrative functions, rendering the entire administrative interface accessible to any remote user who discovers the exploitation technique.
This vulnerability aligns with CWE-287 which addresses improper authentication issues in software systems. The flaw also relates to ATT&CK technique T1078 which covers valid accounts and privilege escalation through the exploitation of weak authentication mechanisms. Organizations affected by this vulnerability should implement immediate mitigations including patching the CMS to a version that properly validates authentication credentials, implementing proper cookie validation mechanisms, and potentially disabling the vulnerable authentication path until a permanent fix is applied. Additionally, network-level protections such as web application firewalls and intrusion detection systems should be configured to monitor for suspicious cookie manipulation patterns. The incident highlights the critical importance of proper authentication implementation and the dangers of relying on client-side data for security decisions, emphasizing that all authentication validation must occur server-side with proper input sanitization and verification procedures.