CVE-2019-19386 Explained : Impact and Mitigation

FusionPBX 4.4.1 is vulnerable to cross-site scripting (XSS) through the app/voicemail_greetings/voicemail_greeting_edit.php file, allowing remote attackers to inject malicious scripts or HTML via specific parameters.

Understanding CVE-2019-19386

This CVE identifies a critical XSS vulnerability in FusionPBX 4.4.1 that can be exploited by attackers to execute arbitrary scripts on the target system.

What is CVE-2019-19386?

The vulnerability in FusionPBX 4.4.1 enables remote attackers to inject malicious web scripts or HTML code using the id and/or voicemail_id parameter, potentially leading to unauthorized actions on the system.

The Impact of CVE-2019-19386

This XSS vulnerability poses a significant risk as it allows attackers to execute arbitrary code within the context of the affected application, potentially compromising sensitive data or performing unauthorized actions.

Technical Details of CVE-2019-19386

FusionPBX 4.4.1 is susceptible to a specific type of XSS attack that can have severe consequences if exploited.

Vulnerability Description

The app/voicemail_greetings/voicemail_greeting_edit.php file in FusionPBX 4.4.1 lacks proper input validation, enabling attackers to inject malicious scripts or HTML through the id and/or voicemail_id parameter.

Affected Systems and Versions

Product: FusionPBX 4.4.1
Vendor: FusionPBX
Version: n/a

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious input containing scripts or HTML code and submitting it through the vulnerable parameters, leading to script execution in the context of the application.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks associated with CVE-2019-19386 and prevent potential exploitation.

Immediate Steps to Take

Apply security patches or updates provided by FusionPBX to address the vulnerability.
Implement input validation mechanisms to sanitize user inputs and prevent XSS attacks.
Regularly monitor and audit web application logs for any suspicious activities.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and remediate vulnerabilities proactively.
Educate developers and administrators on secure coding practices to prevent similar vulnerabilities in the future.

Patching and Updates

Stay informed about security advisories from FusionPBX and promptly apply patches to secure the system against known vulnerabilities.