CVE-2021-35438 : Security Advisory and Response

phpIPAM 1.4.3 contains a vulnerability that allows Reflected Cross-Site Scripting (XSS) via specific URIs in the IP calculator.

Understanding CVE-2021-35438

This CVE involves a security issue in phpIPAM version 1.4.3 that enables a specific type of XSS attack.

What is CVE-2021-35438?

The CVE-2021-35438 vulnerability in phpIPAM 1.4.3 permits Reflected Cross-Site Scripting (XSS) through the URIs app/dashboard/widgets/ipcalc-result.php and app/tools/ip-calculator/result.php within the IP calculator.

The Impact of CVE-2021-35438

Exploitation of this vulnerability could result in malicious actors executing arbitrary scripts in the context of unsuspecting users, potentially leading to account hijacking, sensitive data theft, or other serious security breaches.

Technical Details of CVE-2021-35438

This section details the specific technical aspects of the CVE.

Vulnerability Description

phpIPAM 1.4.3 is susceptible to Reflected Cross-Site Scripting (XSS) attacks when certain URIs related to the IP calculator are accessed, allowing malicious script injection into the web application.

Affected Systems and Versions

The CVE affects phpIPAM version 1.4.3 specifically, exposing systems with this version to the XSS vulnerability through the mentioned URIs.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious links that, when clicked by users of the affected phpIPAM version, execute scripts within the user's browser, potentially compromising their sensitive information.

Mitigation and Prevention

Protecting against and responding to CVE-2021-35438.

Immediate Steps to Take

Users of phpIPAM 1.4.3 should avoid clicking on untrusted or suspicious links, especially those leading to the vulnerable URIs. Additionally, implementing web application firewalls and input validation mechanisms can help mitigate the risks associated with XSS vulnerabilities.

Long-Term Security Practices

Developers should follow secure coding practices, conduct regular security assessments, and stay informed about security updates and patches to prevent similar vulnerabilities in the future.

Patching and Updates

It is crucial for users to update phpIPAM to a patched version that addresses the XSS vulnerability. Following vendor recommendations and staying current with security releases is essential for maintaining the security of the application.