CVE-2021-4108 : Security Advisory and Response

Cross-site Scripting (XSS) - Stored in snipe/snipe-it

Understanding CVE-2021-4108

This CVE identifies a cross-site scripting vulnerability present in snipe/snipe-it versions less than 5.3.5.

What is CVE-2021-4108?

snipe/snipe-it is vulnerable to Improper Neutralization of Input During Web Page Generation, leading to stored cross-site scripting (XSS) attacks.

The Impact of CVE-2021-4108

The vulnerability can allow attackers to inject malicious scripts into web pages viewed by other users, potentially leading to sensitive data theft or site defacement.

Technical Details of CVE-2021-4108

This section covers specific technical details of the vulnerability.

Vulnerability Description

The vulnerability arises from improper neutralization of input during web page generation in snipe/snipe-it, enabling stored cross-site scripting attacks.

Affected Systems and Versions

Versions of snipe/snipe-it less than 5.3.5 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into web pages, which are then executed within the context of a user's browser.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-4108, users can take the following steps.

Immediate Steps to Take

Update snipe/snipe-it to version 5.3.5 or later to patch the vulnerability.
Regularly monitor and sanitize user inputs on web applications to prevent XSS attacks.

Long-Term Security Practices

Educate developers on secure coding practices to prevent input validation vulnerabilities.
Implement Content Security Policy (CSP) to mitigate XSS risks by restricting resource loading.

Patching and Updates

Stay updated with security advisories and apply patches promptly to address newly identified vulnerabilities in snipe/snipe-it.