CVE-2009-3945 in Joomla
Summary
by MITRE
Unspecified vulnerability in the Front-End Editor in the com_content component in Joomla! before 1.5.15 allows remote authenticated users, with Author privileges, to replace the articles of an arbitrary user via unknown vectors.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 04/21/2019
The vulnerability identified as CVE-2009-3945 represents a significant security flaw within the Joomla platform. The vulnerability manifests as an authorization bypass that enables authenticated users with minimal privileges to manipulate content in ways that should be restricted to higher-privileged users. The flaw exists in the permission validation mechanisms that govern content modification operations, creating a path for exploitation that undermines the intended access control model of the system.
The technical nature of this vulnerability stems from inadequate input validation and privilege enforcement within the Front-End Editor interface. Attackers with Author-level privileges can exploit this weakness to replace or modify articles belonging to other users, effectively bypassing the normal content ownership and modification controls that should prevent such cross-user operations. The unspecified vectors suggest that the vulnerability may involve improper session handling, insufficient access control checks, or flawed parameter validation that allows malicious requests to be processed with elevated privileges. This type of vulnerability falls under the category of privilege escalation and unauthorized data manipulation, commonly classified as CWE-284 Access Control Issues in the Common Weakness Enumeration framework.
The operational impact of this vulnerability extends beyond simple content manipulation as it represents a fundamental breach in the content management system's security architecture. An attacker with Author privileges can effectively gain the ability to modify or replace content created by other users, potentially including administrators or editors with higher privileges. This capability enables various malicious activities including the insertion of malicious content, removal of critical information, or modification of content to spread misinformation. The vulnerability particularly concerns the integrity of the content management system as it allows unauthorized modification of user-generated content, potentially leading to data corruption, information disclosure, or the compromise of the entire content management ecosystem. The attack vector requires only authentication, making it accessible to anyone with Author-level access, which is often granted to content contributors within typical Joomla! implementations.
Organizations utilizing Joomla development team. The vulnerability demonstrates the critical importance of maintaining up-to-date software components and implementing proper access control measures within content management systems. Security administrators should conduct comprehensive audits of their Joomla! installations to verify that all users with Author privileges are properly restricted from modifying content owned by other users. The mitigation strategy should include not only patching the identified vulnerability but also implementing additional security controls such as monitoring for unauthorized content modifications, implementing role-based access controls, and conducting regular security assessments of web applications. From an ATT&CK framework perspective, this vulnerability aligns with techniques involving privilege escalation and unauthorized data modification, emphasizing the need for robust access control mechanisms and proper input validation to prevent such security breaches.