CVE-2021-35199 : Exploit Details and Defense Strategies

NETSCOUT nGeniusONE 6.3.0 build 1196 and earlier versions are prone to Stored Cross-Site Scripting (XSS) vulnerability in UploadFile.

Understanding CVE-2021-35199

This CVE record details a Stored Cross-Site Scripting (XSS) vulnerability affecting NETSCOUT nGeniusONE 6.3.0 build 1196 and prior versions.

What is CVE-2021-35199?

CVE-2021-35199 is a Stored Cross-Site Scripting (XSS) vulnerability in NETSCOUT nGeniusONE. Attackers can exploit this flaw in the UploadFile feature.

The Impact of CVE-2021-35199

The vulnerability allows attackers to execute malicious scripts in the context of a user's session, potentially leading to account compromise or data theft.

Technical Details of CVE-2021-35199

This section outlines the technical aspects of the vulnerability.

Vulnerability Description

NETSCOUT nGeniusONE 6.3.0 build 1196 and earlier versions are affected by a Stored Cross-Site Scripting (XSS) vulnerability due to inadequate input validation in the UploadFile component.

Affected Systems and Versions

All instances running NETSCOUT nGeniusONE 6.3.0 build 1196 and prior versions are vulnerable to this XSS issue.

Exploitation Mechanism

An attacker can exploit this vulnerability by uploading a malicious file containing XSS payloads, which are then executed when accessed by other users.

Mitigation and Prevention

Understanding how to mitigate the risk associated with CVE-2021-35199 is crucial.

Immediate Steps to Take

Update NETSCOUT nGeniusONE to the latest version to address the vulnerability.
Avoid uploading files from untrusted sources to reduce the risk of XSS attacks.

Long-Term Security Practices

Implement strict input validation mechanisms to sanitize user inputs and prevent XSS attacks.
Regularly monitor security advisories from NETSCOUT for any updates or patches.

Patching and Updates

Ensure prompt application of security patches and updates provided by NETSCOUT to protect systems from known vulnerabilities.