CVE-2023-5253 : Security Advisory and Response

This CVE-2023-5253 was published on January 15, 2024, by Nozomi Networks after it was reserved on September 28, 2023. It involves a vulnerability related to the Check Point IoT integration in Nozomi Networks Guardian and CMC products.

##Understanding CVE-2023-5253 This vulnerability arises from a missing authentication check in the WebSocket channel used for the Check Point IoT integration in Nozomi Networks Guardian and CMC. This flaw may allow an unauthenticated attacker to access asset data without proper authentication, potentially enabling extraction of asset information by malicious users with system knowledge.

###What is CVE-2023-5253? The vulnerability in CVE-2023-5253, titled "Check Point IoT integration: WebSocket returns assets data without authentication in Guardian/CMC before 23.3.0," poses a risk due to the absence of proper authentication validation in the WebSocket channel.

###The Impact of CVE-2023-5253 The impact of this vulnerability is categorized under CAPEC-115 Authentication Bypass, which signifies the potential for unauthorized access to asset data without authentication. With malicious intent, unauthenticated users could exploit this vulnerability to extract sensitive asset information.

##Technical Details of CVE-2023-5253 The vulnerability is assigned a CVSS v3.1 base score of 5.3, with a medium severity level. The attack vector is through the network, with low attack complexity, requiring no special privileges. The confidentiality impact is low, with no impact on availability or integrity.

###Vulnerability Description The flaw stems from a missing authentication check in the WebSocket channel, enabling unauthenticated access to asset data in Nozomi Networks Guardian and CMC products.

###Affected Systems and Versions Nozomi Networks Guardian and CMC versions earlier than 23.3.0 are impacted by this vulnerability.

###Exploitation Mechanism Attackers can exploit the vulnerability by leveraging the WebSocket channel used for the Check Point IoT integration to obtain asset data without authentication.

##Mitigation and Prevention To address CVE-2023-5253 and mitigate the associated risks, immediate steps should be taken alongside consistent security practices and applying necessary patches and updates.

###Immediate Steps to Take Utilize internal firewall features to restrict access to the web management interface, limiting potential exposure to the vulnerability.

###Long-Term Security Practices Implement robust authentication mechanisms, network segmentation, and ongoing security monitoring to enhance overall cybersecurity posture.

###Patching and Updates Upgrade affected systems to version 23.3.0 or later to mitigate the vulnerability and ensure a more secure environment.