CVE-2012-6342 in Confluence
Summary
by MITRE
Cross-site request forgery (CSRF) vulnerability in logout.action in Atlassian Confluence 3.4.6 allows remote attackers to hijack the authentication of administrators for requests that logout the user via a comment.
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Analysis
by VulDB Data Team • 03/21/2022
The CVE-2012-6342 vulnerability represents a critical cross-site request forgery flaw discovered in Atlassian Confluence version 3.4.6, specifically within the logout.action component. This vulnerability exposes the application to unauthorized administrative actions by exploiting the fundamental principle of CSRF attacks where malicious actors can trick authenticated users into performing unintended actions. The flaw occurs in the session management mechanism that fails to properly validate the origin of logout requests, creating a pathway for attackers to manipulate administrator sessions through seemingly benign comment submissions.
The technical implementation of this vulnerability stems from insufficient anti-CSRF token validation in the logout functionality. When administrators access the Confluence application, their session remains active until explicitly terminated through the logout process. However, the application's design does not adequately verify that logout requests originate from legitimate sources within the same application context. Attackers can craft malicious web pages or embed specially crafted requests within comment fields that, when viewed by an administrator, automatically trigger logout actions. This creates a scenario where the administrator's session gets invalidated without their knowledge, potentially allowing further unauthorized access or manipulation of the system.
The operational impact of this vulnerability extends beyond simple session hijacking, as it can be leveraged for more sophisticated attacks within the Confluence environment. An attacker who successfully exploits this flaw can effectively remove administrative sessions from the application, potentially disrupting legitimate user access or creating opportunities for privilege escalation. The vulnerability is particularly dangerous because it targets administrator accounts, which possess elevated privileges and can modify critical system configurations, manage user permissions, and access sensitive data within the Confluence instance. The attack vector through comment fields makes this vulnerability particularly insidious as it can be concealed within normal user interactions and may go unnoticed by security monitoring systems.
Mitigation strategies for CVE-2012-6342 should focus on implementing robust anti-CSRF protection mechanisms within the Confluence application. Organizations should immediately upgrade to patched versions of Atlassian Confluence that address this vulnerability through proper token validation and request origin verification. The implementation of anti-CSRF tokens should be enforced for all state-changing operations including logout functionality, ensuring that each request contains a unique, unpredictable token that can be validated against the user's current session. Additionally, organizations should implement network-level security controls such as web application firewalls that can detect and block suspicious logout requests, and establish monitoring procedures to identify unusual logout patterns that may indicate exploitation attempts. This vulnerability aligns with CWE-352, which specifically addresses cross-site request forgery weaknesses, and represents a direct violation of the principle of least privilege and proper session management as outlined in various cybersecurity frameworks including the NIST Cybersecurity Framework and ISO 27001 standards.
The exploitation of this vulnerability demonstrates the critical importance of proper session management and authentication validation in web applications. Security teams should conduct thorough vulnerability assessments of their Confluence installations to identify similar weaknesses in other application components, particularly those involving user session termination and privilege management. Regular security audits and penetration testing should include validation of anti-CSRF mechanisms to ensure that all state-changing operations within the application are properly protected. Organizations should also implement security awareness training for administrators to recognize potential CSRF attack vectors and establish incident response procedures specifically designed to address session hijacking and authentication-related security breaches. The vulnerability underscores the necessity of maintaining up-to-date security patches and implementing defense-in-depth strategies that protect against multiple attack vectors simultaneously.