CVE-2023-4493 : Security Advisory and Response

This CVE-2023-4493 relates to a Stored Cross-Site Scripting (XSS) vulnerability found in Easy Address Book Web Server version 1.6. This vulnerability allows a remote attacker to inject a malicious JavaScript payload into the application, leading to an integrity impact.

Understanding CVE-2023-4493

This section delves deeper into the details of CVE-2023-4493, including its impact, technical aspects, affected systems, and mitigation strategies.

What is CVE-2023-4493?

The CVE-2023-4493 vulnerability involves a Stored Cross-Site Scripting (XSS) issue in Easy Address Book Web Server version 1.6. Attackers can exploit this vulnerability by injecting malicious JavaScript code through specific parameters, leading to an integrity impact.

The Impact of CVE-2023-4493

The impact of this vulnerability is classified as moderate, with a base severity score of 6.1 (CVSS v3.1). While the confidentiality and integrity impacts are categorized as low, the attack complexity is low, and user interaction is required for exploitation. However, the potential for a remote attacker to execute malicious scripts poses a significant risk to the affected systems.

Technical Details of CVE-2023-4493

This section explores the technical aspects of the CVE-2023-4493 vulnerability, including its description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

The vulnerability stems from improper input validation in Easy Address Book Web Server version 1.6. Attackers can store malicious scripts in the application, particularly in the users_admin.ghp file, affecting various parameters and enabling the execution of the injected payload upon page load.

Affected Systems and Versions

Easy Address Book Web Server version 1.6 by EFS Software is specifically impacted by the CVE-2023-4493 vulnerability. Organizations using this version are at risk of exploitation if the necessary security measures are not implemented promptly.

Exploitation Mechanism

To exploit this vulnerability, remote attackers can input malicious JavaScript code into specific parameters within the Easy Address Book Web Server application. When the vulnerable page is accessed, the injected payload gets executed, potentially compromising the integrity of the system.

Mitigation and Prevention

This section outlines the necessary steps to mitigate the risks associated with CVE-2023-4493 and prevent potential exploitation.

Immediate Steps to Take

Immediate actions include updating Easy Address Book Web Server to a patched version that addresses the XSS vulnerability. Additionally, organizations should monitor and restrict user input to prevent malicious script injections.

Long-Term Security Practices

Implementing secure coding practices, conducting regular security assessments, and providing security awareness training to personnel can help prevent similar vulnerabilities in the future. Employing web application firewalls and routine security audits also play a crucial role in enhancing overall security posture.

Patching and Updates

Regularly monitoring official security advisories and applying patches released by EFS Software for Easy Address Book Web Server is essential. Timely updates help mitigate known vulnerabilities and enhance the overall resilience of the software against potential security threats.