CVE-2004-2736 in Helpdesk
Summary
by MITRE
Polar HelpDesk 3.0 allows remote attackers to bypass authentication by setting the UserId and UserType values in a cookie.
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Analysis
by VulDB Data Team • 07/05/2025
The vulnerability described in CVE-2004-2736 represents a critical authentication bypass flaw in Polar HelpDesk version 3.0 that directly undermines the security posture of affected systems. This issue stems from improper handling of session management within the application's cookie-based authentication mechanism, creating a pathway for unauthorized users to gain access to protected resources without legitimate credentials. The vulnerability specifically targets the UserId and UserType parameters within HTTP cookies, which are typically used to maintain user sessions and track authentication status within web applications.
The technical flaw manifests when attackers manipulate cookie values to impersonate legitimate users within the Polar HelpDesk system. By directly setting the UserId parameter to a valid user identifier and UserType to an appropriate user role value, malicious actors can bypass the normal authentication process entirely. This type of vulnerability falls under the category of insecure direct object references and weak session management as classified by CWE-285 and CWE-613 respectively. The flaw demonstrates a fundamental lack of proper input validation and authentication checks within the application's session handling code, allowing attackers to manipulate critical session parameters that should be protected from client-side modification.
From an operational impact perspective, this vulnerability creates significant security risks for organizations relying on Polar HelpDesk for customer support and help desk management. An attacker who successfully exploits this vulnerability can access sensitive customer data, modify help desk tickets, view confidential communications, and potentially escalate privileges within the system. The remote nature of the attack means that threat actors do not require physical access to the network or system, making the vulnerability particularly dangerous as it can be exploited from anywhere on the internet. This authentication bypass effectively renders the application's access controls useless, potentially exposing the entire help desk system to unauthorized access and data breaches.
The exploitation of this vulnerability aligns with techniques documented in the MITRE ATT&CK framework under the privilege escalation and credential access domains, specifically targeting the T1566 technique for credential access through manipulation of authentication tokens. Organizations should implement immediate mitigations including input validation for cookie parameters, server-side session management, and proper authentication state verification. The recommended approach involves implementing robust session handling mechanisms that store critical session data server-side rather than relying on client-side cookie values, along with proper access control checks that validate user credentials at each request. Additionally, implementing secure cookie attributes such as HttpOnly and Secure flags, along with regular security audits of session management code, would significantly reduce the risk of similar vulnerabilities in the future.