CVE-2023-3394 in fossbilling
Summary
by MITRE • 06/23/2023
Session Fixation in GitHub repository fossbilling/fossbilling prior to 0.5.1.
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Analysis
by VulDB Data Team • 07/18/2023
The vulnerability identified as CVE-2023-3394 represents a session fixation issue within the fossbilling/fossbilling repository, specifically affecting versions prior to 0.5.1. This security flaw resides in the authentication and session management mechanisms of the billing software platform, which is commonly used for managing hosting and billing services. Session fixation vulnerabilities occur when an application fails to properly invalidate or regenerate session identifiers upon successful authentication, creating opportunities for attackers to hijack user sessions. The flaw manifests in the software's inability to ensure that session tokens are properly reset after user login, potentially allowing malicious actors to exploit this weakness to gain unauthorized access to user accounts. This vulnerability directly impacts the integrity of the authentication system and compromises user session security within the application environment.
The technical implementation of this session fixation vulnerability stems from improper session handling within the authentication flow of the fossbilling application. When users log into the system, the application should generate a new, unique session identifier and invalidate any existing session tokens to prevent session hijacking attempts. However, in affected versions, the software fails to perform this critical session regeneration step, allowing attackers who have obtained a valid session token to reuse that same token to impersonate legitimate users. The flaw typically occurs in the login processing code where session management routines do not adequately address the transition from guest to authenticated user states. This vulnerability falls under the category of CWE-384, which specifically addresses session fixation issues in web applications, and aligns with ATT&CK technique T1563.002 related to credential access through session hijacking. The root cause lies in the absence of proper session token rotation mechanisms during the authentication process, creating a persistent vulnerability that remains exploitable until the software is updated to version 0.5.1 or later.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it creates persistent security risks for organizations relying on fossbilling for their hosting and billing operations. Attackers who successfully exploit this vulnerability can maintain long-term access to user accounts, potentially gaining access to sensitive billing information, customer data, and system configurations. The implications are particularly severe for businesses that handle financial transactions and personal user information through the platform. The vulnerability can be exploited by attackers who have obtained session cookies through various means such as cross-site scripting attacks, man-in-the-middle attacks, or by simply capturing session tokens from unsecured network communications. Organizations using affected versions of fossbilling face significant risk of data breaches, financial loss, and regulatory compliance violations. The persistence of this vulnerability means that once exploited, attackers can maintain access to compromised accounts for extended periods without detection, making it particularly dangerous in environments where continuous monitoring may not be fully implemented.
Mitigation strategies for CVE-2023-3394 require immediate action to upgrade to version 0.5.1 or later of the fossbilling application, which contains the necessary fixes for session management. Organizations should implement comprehensive session management policies that include proper session token regeneration upon authentication, enforce secure session cookie attributes such as HttpOnly and Secure flags, and implement session timeout mechanisms. Network administrators should also deploy additional security controls including web application firewalls, secure communication protocols, and monitoring systems to detect potential exploitation attempts. The fix implemented in version 0.5.1 addresses the core session fixation issue by ensuring that session identifiers are properly regenerated during the authentication process, preventing attackers from reusing session tokens. Security teams should conduct thorough vulnerability assessments to identify any compromised sessions and implement account recovery procedures for potentially affected users. Additionally, organizations should review their overall session management practices and consider implementing multi-factor authentication as an additional security layer to protect against session hijacking attempts. The vulnerability serves as a reminder of the critical importance of proper session handling in web applications and the necessity of regular security updates to address known vulnerabilities.