CVE-2018-13337 in TerraMaster TOS
Summary
by MITRE
Session Fixation in the web application for TerraMaster TOS version 3.1.03 allows attackers to control users' session cookies via JavaScript.
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Analysis
by VulDB Data Team • 04/15/2020
The vulnerability identified as CVE-2018-13337 represents a critical session fixation flaw within TerraMaster TOS version 3.1.03 web application. This vulnerability stems from the application's failure to properly regenerate session identifiers upon user authentication, creating a persistent security risk that directly impacts user session management and authorization controls. The issue manifests when the web application fails to invalidate or replace existing session cookies with new ones during the authentication process, allowing attackers to exploit this weakness through JavaScript manipulation techniques.
The technical implementation of this vulnerability involves the web application's session handling mechanism where session identifiers remain static or predictable across authentication boundaries. When users log into the TerraMaster TOS interface, the system does not adequately sever the old session and establish a fresh one, enabling attackers to capture valid session tokens and reuse them to impersonate legitimate users. This flaw specifically leverages JavaScript capabilities to manipulate session cookies, allowing malicious actors to inject or modify session identifiers within the browser context, effectively hijacking user sessions without requiring valid credentials.
From an operational perspective, this vulnerability creates significant risk for organizations utilizing TerraMaster TOS version 3.1.03, particularly in enterprise environments where the system manages critical data storage and network access controls. Attackers can exploit this weakness to gain unauthorized access to user accounts, potentially leading to data breaches, privilege escalation, and unauthorized system modifications. The impact extends beyond simple unauthorized access as it undermines the fundamental security model of the application, allowing persistent session hijacking that can remain undetected for extended periods. The vulnerability also affects the integrity of user authentication processes and can compromise the confidentiality of stored data within the TerraMaster environment.
The mitigation strategies for CVE-2018-13337 require immediate implementation of proper session management practices that align with industry standards and security frameworks. Organizations should implement session regeneration upon successful authentication, ensuring that each login event triggers the creation of a new session identifier while invalidating the previous one. This approach directly addresses the core issue identified in the vulnerability and aligns with the principles outlined in CWE-384, which specifically addresses session fixation vulnerabilities in web applications. Security measures should include configuring the web application to automatically regenerate session IDs after authentication, implementing proper session timeout mechanisms, and ensuring that session cookies are properly secured with appropriate flags such as HttpOnly and Secure attributes. Additionally, regular security assessments and code reviews should be conducted to identify and remediate similar session management flaws that may exist within the application's architecture. The remediation process should also incorporate monitoring and logging of session-related activities to detect potential exploitation attempts and maintain audit trails for security incident response.