CVE-2023-40253 in Genian NAC
Summary
by MITRE • 08/11/2023
Improper Authentication vulnerability in Genians Genian NAC V4.0, Genians Genian NAC V5.0, Genians Genian NAC Suite V5.0, Genians Genian ZTNA allows Functionality Misuse.This issue affects Genian NAC V4.0: from V4.0.0 through V4.0.155; Genian NAC V5.0: from V5.0.0 through V5.0.42 (Revision 117460); Genian NAC Suite V5.0: from V5.0.0 through V5.0.54; Genian ZTNA: from V6.0.0 through V6.0.15.
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Analysis
by VulDB Data Team • 09/05/2023
The CVE-2023-40253 vulnerability represents a critical improper authentication flaw within Genians Genian Network Access Control (NAC) solutions and Zero Trust Network Access (ZTNA) platforms. This vulnerability exists across multiple product versions including Genian NAC V4.0 through V4.0.155, Genian NAC V5.0 through V5.0.42, Genian NAC Suite V5.0 through V5.0.54, and Genian ZTNA V6.0.0 through V6.0.15. The flaw allows for functionality misuse, meaning that unauthorized parties can potentially exploit the system to gain access to network resources that should be restricted to authenticated users only. This type of vulnerability directly undermines the fundamental security principle of authentication and access control that network access solutions are designed to enforce.
The technical implementation of this authentication flaw appears to stem from inadequate validation of user credentials or session management within the Genian NAC and ZTNA platforms. Attackers could potentially bypass authentication mechanisms through various means including but not limited to session hijacking, credential reuse, or exploitation of weak authentication flows. The vulnerability's classification as improper authentication aligns with CWE-287, which specifically addresses "Improper Authentication" issues in software systems. This weakness creates a pathway for adversaries to assume the identity of legitimate users or gain unauthorized access to network resources without proper authorization. The impact is particularly severe given that these products are designed to control and monitor network access, making them prime targets for attackers seeking persistent access to enterprise networks.
The operational impact of CVE-2023-40253 extends beyond simple unauthorized access, potentially enabling attackers to establish persistent footholds within network environments. Once authenticated, malicious actors could leverage the compromised system to perform lateral movement, escalate privileges, or exfiltrate sensitive data from within the network perimeter. This vulnerability particularly affects organizations that rely on Genian solutions for network segmentation and access control, as it essentially renders the security controls provided by these platforms ineffective. The affected versions span multiple releases, indicating this may be a long-standing issue that has not been properly addressed in the software lifecycle. Organizations using these products face significant risk of data breaches, insider threats, and potential compliance violations, especially in regulated environments where network access control is mandated.
Mitigation strategies for this vulnerability should include immediate patching of affected systems to the latest available versions that contain fixes for the authentication flaw. Organizations should also implement network segmentation to limit the blast radius of potential exploitation and monitor network traffic for suspicious authentication patterns. Security teams should conduct comprehensive vulnerability assessments to identify any potential exploitation attempts and ensure that access controls are properly enforced throughout the network. The ATT&CK framework categorizes this type of vulnerability under T1078 which covers Valid Accounts and T1566 which covers Phishing, as attackers may attempt to leverage compromised credentials to gain access to systems. Additionally, implementing multi-factor authentication and robust session management controls can help reduce the risk associated with credential compromise, while regular security audits and penetration testing should be conducted to identify and remediate similar weaknesses in the network infrastructure.