CVE-2022-42247 : Vulnerability Insights and Analysis

A cross-site scripting (XSS) vulnerability was discovered in pfSense v2.5.2, specifically in the browser.php component. This vulnerability could allow attackers to execute malicious web scripts or HTML by injecting a specially crafted payload into a file name.

Understanding CVE-2022-42247

This section delves into the details of the CVE-2022-42247 vulnerability.

What is CVE-2022-42247?

pfSense v2.5.2 is affected by a cross-site scripting (XSS) vulnerability in the browser.php component. Attackers could leverage this vulnerability to run arbitrary web scripts or HTML via a manipulated payload injected into a file name.

The Impact of CVE-2022-42247

The XSS vulnerability in pfSense v2.5.2 poses a severe risk as it enables threat actors to execute malicious scripts or HTML within the context of a user's session, potentially leading to account compromise or unauthorized access.

Technical Details of CVE-2022-42247

Explore the technical aspects of the CVE-2022-42247 vulnerability.

Vulnerability Description

The vulnerability allows attackers to inject a crafted payload into a file name, leading to the execution of arbitrary web scripts or HTML within the context of the affected user.

Affected Systems and Versions

pfSense v2.5.2 is confirmed to be impacted by this XSS vulnerability, affecting systems operating on this specific version.

Exploitation Mechanism

To exploit this vulnerability, attackers need to inject a malicious payload into a file name, tricking the system into executing unauthorized scripts or HTML content.

Mitigation and Prevention

Discover the necessary steps to mitigate and prevent the CVE-2022-42247 vulnerability.

Immediate Steps to Take

Users of pfSense v2.5.2 should exercise caution when interacting with file names to avoid falling victim to XSS attacks. Regularly monitoring for unusual file name behavior is advised.

Long-Term Security Practices

Implementing secure coding practices, conducting routine security audits, and staying informed about software updates can bolster the overall security posture and help prevent similar vulnerabilities.

Patching and Updates

Users are strongly recommended to update pfSense to the latest version to patch the XSS vulnerability effectively and protect systems from exploitation.