CVE-2024-32006 in SINEMA Remote Connect Client
Summary
by MITRE • 09/10/2024
A vulnerability has been identified in SINEMA Remote Connect Client (All versions < V3.2 SP2). The affected application does not expire the user session on reboot without logout. This could allow an attacker to bypass Multi-Factor Authentication.
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Analysis
by VulDB Data Team • 08/20/2025
The vulnerability identified in SINEMA Remote Connect Client affects all versions prior to V3.2 SP2 and represents a critical session management flaw that undermines the security posture of remote access implementations. This issue stems from the application's failure to properly terminate user sessions when the system undergoes a reboot process, creating a persistent authentication state that remains valid even after normal logout procedures have been completed. The flaw specifically impacts the session expiration mechanism, which should ideally invalidate all active connections and authentication tokens upon system restart, but instead maintains the session state across reboots. This behavior creates a significant security gap that directly conflicts with standard security practices for session management and authentication lifecycle control.
The technical implementation of this vulnerability allows an attacker to leverage the persistent session state to bypass multi-factor authentication requirements that should normally be enforced upon each new login attempt. When a system reboot occurs, the application fails to properly clean up authentication contexts, leaving session tokens and authentication credentials in a valid state that can be reused by unauthorized parties. This issue aligns with CWE-613, which addresses insufficient session expiration, and represents a direct violation of the principle of least privilege and proper authentication state management. The vulnerability essentially creates a backdoor mechanism where an attacker can maintain access to the system without re-authenticating, effectively circumventing the security controls that should prevent unauthorized access. The persistence of session tokens across reboots enables attackers to maintain elevated privileges without the need for additional authentication factors, undermining the entire multi-factor authentication framework.
The operational impact of this vulnerability extends beyond simple unauthorized access to encompass potential privilege escalation and persistent system compromise. An attacker who gains physical access to a rebooted system can immediately resume operations within the authenticated session without providing additional authentication factors, potentially accessing sensitive data, modifying system configurations, or conducting further malicious activities. This vulnerability particularly affects industrial environments where SINEMA Remote Connect Client is deployed for remote maintenance and monitoring, as it creates opportunities for persistent threats to establish long-term presence within operational technology networks. The impact is amplified in environments where physical security controls are insufficient or where unauthorized individuals may have access to systems during maintenance windows or power outages that trigger reboots.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term architectural improvements to session management. The primary solution involves upgrading to SINEMA Remote Connect Client version V3.2 SP2 or later, which contains the necessary patches to properly terminate sessions during system reboot events. Organizations should implement comprehensive patch management procedures to ensure all instances of the affected software are updated promptly. Additional controls include implementing network-level session monitoring to detect anomalous behavior patterns that may indicate unauthorized session reuse, configuring automatic session timeouts even on reboot events, and establishing robust logging mechanisms to track session creation and termination. Security teams should also consider implementing additional authentication controls such as certificate-based authentication or hardware security modules that can provide stronger authentication guarantees even when traditional session management fails. The vulnerability highlights the importance of proper session lifecycle management in security architectures and aligns with ATT&CK technique T1563.002 for "Account Access Removal" and T1562.001 for "Disable or Modify Tools" which may be relevant during exploitation attempts. Organizations should also consider implementing zero-trust network access principles that do not rely on persistent session states and instead require continuous authentication verification.