CVE-2019-12584 : Exploit Details and Defense Strategies

A cross-site scripting (XSS) vulnerability in Apcupsd version 0.3.91_5 used in pfSense up to 2.4.4-RELEASE-p3 and similar products.

Understanding CVE-2019-12584

This CVE involves a security issue in Apcupsd affecting pfSense and related products.

What is CVE-2019-12584?

The version 0.3.91_5 of Apcupsd, utilized in pfSense up to 2.4.4-RELEASE-p3 and similar products, contains a cross-site scripting (XSS) problem within the apcupsd_status.php file.

The Impact of CVE-2019-12584

Attackers can exploit this vulnerability to execute malicious scripts in the context of an authenticated user's session.
This could lead to unauthorized actions, data theft, or further compromise of the affected system.

Technical Details of CVE-2019-12584

A deeper look into the technical aspects of this vulnerability.

Vulnerability Description

Apcupsd version 0.3.91_5 has a cross-site scripting (XSS) issue in the apcupsd_status.php file.

Affected Systems and Versions

Apcupsd version 0.3.91_5 used in pfSense up to 2.4.4-RELEASE-p3 and similar products.

Exploitation Mechanism

Attackers can inject and execute malicious scripts through the vulnerable apcupsd_status.php file.

Mitigation and Prevention

Measures to address and prevent the exploitation of this vulnerability.

Immediate Steps to Take

Update Apcupsd to a patched version that addresses the XSS vulnerability.
Monitor for any unauthorized access or suspicious activities on the affected systems.

Long-Term Security Practices

Regularly update and patch all software components to mitigate potential security risks.
Implement web application firewalls and input validation mechanisms to prevent XSS attacks.

Patching and Updates

Apply security patches provided by Apcupsd promptly to fix the XSS vulnerability and enhance system security.