CVE-2020-19202 : Vulnerability Insights and Analysis

An authenticated Stored XSS (Cross-site Scripting) vulnerability exists in the "captive.cgi" Captive Portal in IPFire 2.21 (x86_64) - Core Update 130, allowing an authenticated WebGUI user to execute Stored Cross-site Scripting.

Understanding CVE-2020-19202

This CVE involves a security issue in the Captive Portal of IPFire 2.21 (x86_64) - Core Update 130.

What is CVE-2020-19202?

This CVE identifies an authenticated Stored XSS vulnerability in the Captive Portal of IPFire 2.21 (x86_64) - Core Update 130. The flaw allows a privileged WebGUI user to execute malicious scripts in the Captive Portal page.

The Impact of CVE-2020-19202

The vulnerability could be exploited by an authenticated attacker to inject malicious scripts into the Captive Portal, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2020-19202

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability resides in the handling of input from the "Title of Login Page" text box or the "TITLE" parameter in the captive.cgi Captive Portal.

Affected Systems and Versions

IPFire 2.21 (x86_64) - Core Update 130

Exploitation Mechanism

An authenticated WebGUI user with privileges can exploit this vulnerability by injecting malicious scripts into the Captive Portal page.

Mitigation and Prevention

Protecting systems from CVE-2020-19202 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Monitor and restrict user access to the affected components.
Educate users on safe browsing practices to mitigate the risk of XSS attacks.

Long-Term Security Practices

Regularly update and patch all software and applications to prevent known vulnerabilities.
Implement strict input validation and output encoding to mitigate XSS risks.
Conduct regular security audits and penetration testing to identify and address security weaknesses.
Stay informed about security advisories and updates from the vendor.
Consider implementing a web application firewall to filter and block malicious traffic.

Patching and Updates

Ensure that the system is updated to the latest version of IPFire to address the vulnerability and follow vendor recommendations for securing the Captive Portal.