CVE-2023-28361 Explained : Impact and Mitigation

This CVE record pertains to a Cross-site WebSocket Hijacking (CSWSH) vulnerability identified in UniFi OS 2.5 and earlier versions. It enables a malicious actor to gain unauthorized access to specific confidential information by convincing a UniFi OS user to visit a malicious webpage. The issue affects various UniFi OS products, and mitigation involves updating the impacted products to UniFi OS 3.0.13 or later.

Understanding CVE-2023-28361

This section delves into the details of CVE-2023-28361, outlining the vulnerability, its impact, technical aspects, and steps for mitigation and prevention.

What is CVE-2023-28361?

CVE-2023-28361 is a Cross-site WebSocket Hijacking (CSWSH) vulnerability found in UniFi OS 2.5 and earlier versions. Exploiting this vulnerability allows threat actors to access confidential information by manipulating a user into visiting a malicious webpage.

The Impact of CVE-2023-28361

The impact of this vulnerability is significant as it compromises the confidentiality of data stored or accessed by UniFi OS users. By exploiting CSWSH, malicious entities can potentially retrieve sensitive information without authorization, posing a security risk to affected systems and users.

Technical Details of CVE-2023-28361

This section provides a deeper insight into the technical aspects of CVE-2023-28361, including vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability in UniFi OS 2.5 and earlier versions allows malicious actors to perform Cross-site WebSocket Hijacking (CSWSH), leading to unauthorized access to confidential information stored within affected systems.

Affected Systems and Versions

UniFi OS products affected by CVE-2023-28361 include Cloud Key Gen2, Cloud Key Gen2 Plus, UNVR, UNVR Professional, UDM, UDM Professional, and UDM SEUDR. The vulnerability impacts versions prior to UniFi OS 3.0.13.

Exploitation Mechanism

Threat actors exploit the CSWSH vulnerability by tricking UniFi OS users into visiting a malicious webpage, granting unauthorized access to sensitive information stored within the system.

Mitigation and Prevention

In response to CVE-2023-28361, it is crucial to implement immediate steps for mitigation and adopt long-term security practices to prevent similar vulnerabilities in the future. Additionally, ensuring timely patching and updates is imperative to enhance system security.

Immediate Steps to Take

Immediately update the affected UniFi OS products to version 3.0.13 or later to mitigate the vulnerability and safeguard confidential information from unauthorized access.

Long-Term Security Practices

Establish robust security protocols, educate users about potential threats like CSWSH, and regularly assess and address security vulnerabilities to enhance the overall security posture of UniFi OS environments.

Patching and Updates

Stay vigilant for security advisories and promptly apply patches and updates released by UniFi to address vulnerabilities, enhance system security, and protect against potential cyber threats.