CVE-2023-4594 : Exploit Details and Defense Strategies

This CVE was published by INCIBE on November 23, 2023. It involves a Stored XSS vulnerability in BVRP Software SLmail, with a base CVSS score of 6.1 classified as MEDIUM severity.

Understanding CVE-2023-4594

This vulnerability allows an attacker to store a malicious JavaScript payload in the MailAdmin_dll.htm file using GET and POST methods, potentially leading to a stored XSS attack.

What is CVE-2023-4594?

CVE-2023-4594 is a Stored XSS vulnerability that enables threat actors to inject and execute malicious scripts via multiple parameters in the MailAdmin_dll.htm file, exploiting the web application's vulnerability.

The Impact of CVE-2023-4594

The impact of this vulnerability is classified as MEDIUM severity, with a CVSS base score of 6.1. It could lead to unauthorized access, data manipulation, and potential security breaches if exploited by malicious actors.

Technical Details of CVE-2023-4594

This section provides detailed information about the vulnerability, affected systems, and how it can be exploited.

Vulnerability Description

The vulnerability involves improper neutralization of input during web page generation, specifically related to 'Cross-site Scripting' (CWE-79), allowing attackers to execute arbitrary JavaScript code.

Affected Systems and Versions

The affected product is SLmail by BVRP Software, specifically version 5.5.0.4433. Organizations using this specific version are at risk of exploitation.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending malicious payloads using GET and POST methods to inject and store malicious JavaScript code within the MailAdmin_dll.htm file, leading to a stored XSS attack.

Mitigation and Prevention

It is crucial for organizations to take immediate steps to mitigate the risk posed by CVE-2023-4594 and implement long-term security practices to prevent such vulnerabilities in the future.

Immediate Steps to Take

Organizations should implement input validation mechanisms to sanitize user inputs and prevent the execution of malicious scripts.
Regularly monitor and update web application security controls to detect and mitigate XSS vulnerabilities promptly.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and address vulnerabilities proactively.
Provide ongoing security awareness training to educate developers and users on secure coding practices and threat awareness.

Patching and Updates

While there is currently no reported solution available, affected organizations should stay informed about any patches or security updates released by the vendor to address the CVE-2023-4594 vulnerability. Regularly updating software and implementing security best practices are essential for mitigating such risks.