Description

Session fixation vulnerability in Secomea GateManager (webserver module) allows Session Fixation. This issue affects GateManager: 11.5;0, 11.4.625515072:0. Fixed in Version 11.6 or 11.4.626194074 and above

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.3",
  "pubDate": "2026-09-15T11:17:07.587Z",
  "pubdate": "2026-09-15T11:17:07.587Z",
  "executiveSummary": "A session fixation vulnerability has been identified within the webserver module of Secomea GateManager, affecting versions 11.5;0 and 11.4.625515072:0.\nThe flaw resides in the application's session management mechanism, specifically the failure to rotate or regenerate session identifiers upon successful authentication.\nThis vulnerability allows an unauthenticated or malicious actor to force a pre-defined session ID onto a victim, subsequently hijacking the authenticated session once the user logs in.\nSuccessful exploitation grants the attacker unauthorized access to the victim's authenticated session, potentially leading to administrative account compromise, unauthorized configuration changes, or access to sensitive operational technology (OT) management interfaces.\nThe impact is significant, as GateManager serves as a critical infrastructure gateway, and session hijacking bypasses primary authentication controls.\nAttackers do not require prior access to credentials, only the ability to initiate a session state that is later promoted to an authenticated status by the victim.",
  "technicalDetails": "The vulnerability is characterized by the application's failure to implement proper session lifecycle management, specifically the absence of token regeneration upon authentication transitions.\nIn a session fixation attack, the webserver module accepts a user-provided session identifier without validating its state or origin during the login process.\nThe attack flow commences with the adversary initiating a request to the GateManager web interface to obtain a legitimate, non-authenticated session cookie.\nThe adversary then lures a legitimate user to access the same web application using the known, fixed session identifier through techniques such as cross-site scripting (XSS), malicious links, or man-in-the-middle (MITM) interception if transport security is misconfigured.\nOnce the target user successfully authenticates using the manipulated session identifier, the server associates the existing session ID with the user's privileged account.\nBecause the server maintains the same session identifier post-authentication rather than issuing a new token, the adversary—who already possesses the identifier—gains access to the application with the privileges of the authenticated user.\nThis flaw is persistent in Secomea GateManager versions 11.5;0 and 11.4.625515072:0 due to insecure handling of session state transitions within the underlying webserver module.\nExploitation is platform-agnostic, relying purely on the application's logic defect. The vulnerability exposes administrative sessions to compromise, allowing an attacker to perform unauthorized operations, such as modifying industrial network access rules or altering secure tunnel configurations.\nThe lack of enforced session invalidation prevents the mitigation of this threat at the application layer without updating the core software component."
}