CVE-2023-43317 in CRM Portal
Summary
by MITRE • 01/24/2024
An issue in Coign CRM Portal v.06.06 allows a remote attacker to escalate privileges via the userPermissionsList parameter in Session Storage component.
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Analysis
by VulDB Data Team • 02/17/2024
The vulnerability identified as CVE-2023-43317 affects Coign CRM Portal version 06.06 and represents a critical privilege escalation flaw within the session management component. This issue arises from inadequate input validation and sanitization mechanisms in the userPermissionsList parameter handling, which allows remote attackers to manipulate session data and gain elevated access rights. The vulnerability exists in the Session Storage component where user permissions are managed and stored, creating a pathway for unauthorized privilege elevation without proper authentication or authorization checks.
The technical exploitation of this vulnerability occurs through manipulation of the userPermissionsList parameter which is typically used to store and retrieve user access rights within the application's session storage mechanism. Attackers can craft malicious requests that modify this parameter to include elevated permission levels or administrative privileges, effectively bypassing the normal authentication and authorization controls. This type of vulnerability falls under CWE-284 which specifically addresses improper access control, and represents a classic example of insufficient input validation that allows attackers to manipulate application state. The flaw demonstrates poor security design principles where session data integrity is not properly maintained, allowing attackers to directly modify critical access control information.
The operational impact of this vulnerability is severe as it enables remote attackers to escalate privileges without requiring valid credentials or knowledge of legitimate user accounts. Once exploited, attackers can gain administrative access to the CRM portal, potentially leading to data breaches, unauthorized data modification, system compromise, and complete loss of confidentiality and integrity within the application. The vulnerability affects all users who maintain active sessions within the Coign CRM Portal, making it particularly dangerous as it can be exploited against any authenticated user session. This type of privilege escalation attack maps directly to ATT&CK technique T1078 which covers valid accounts and T1548.001 which covers abuse of privileges, representing a significant threat to organizational security posture.
Mitigation strategies for this vulnerability should focus on implementing proper input validation and sanitization for all session-related parameters including userPermissionsList. The application should enforce strict access control mechanisms that validate session data integrity and prevent unauthorized modifications to permission levels. Implementing proper session management practices including secure session tokens, regular session validation, and input sanitization techniques will help prevent exploitation of this vulnerability. Additionally, organizations should implement proper security testing including dynamic application security testing and penetration testing to identify similar flaws in session management components. The fix should include input validation that rejects malformed or suspicious permission data, proper session token management, and enforcement of least privilege principles to minimize the impact of any potential exploitation attempts.