CVE-2021-37504 : Exploit Details and Defense Strategies

A cross-site scripting (XSS) vulnerability in the fileNameStr parameter of jQuery-Upload-File v4.0.11 allows attackers to execute arbitrary web scripts or HTML via a crafted file with a Javascript payload in the file name.

Understanding CVE-2021-37504

This CVE-2021-37504 is related to a cross-site scripting (XSS) vulnerability in the jQuery-Upload-File v4.0.11.

What is CVE-2021-37504?

CVE-2021-37504 is a security vulnerability that allows attackers to inject malicious scripts or HTML code through a crafted file using the fileNameStr parameter in jQuery-Upload-File v4.0.11.

The Impact of CVE-2021-37504

The impact of this vulnerability can lead to unauthorized execution of malicious scripts on the victim's web browser, potentially compromising the security and integrity of the affected system.

Technical Details of CVE-2021-37504

This section provides a deeper insight into the technical aspects of CVE-2021-37504.

Vulnerability Description

The vulnerability arises due to improper input validation of the fileNameStr parameter, allowing an attacker to embed malicious scripts within the file name, which gets executed when processed by the affected system.

Affected Systems and Versions

All versions of jQuery-Upload-File v4.0.11 are affected by this vulnerability. Users utilizing this version are advised to take immediate action to mitigate the risk.

Exploitation Mechanism

By exploiting this vulnerability, an attacker can manipulate the fileNameStr parameter to include a Javascript payload, which upon execution can perform unauthorized actions on the victim's browser, posing a significant security risk.

Mitigation and Prevention

To address CVE-2021-37504 and enhance security measures, follow the recommended steps below:

Immediate Steps to Take

Disable or restrict the affected parameter (fileNameStr) in jQuery-Upload-File v4.0.11 to prevent the injection of malicious scripts.
Implement input validation mechanisms to sanitize user-supplied inputs and prevent XSS attacks.

Long-Term Security Practices

Stay informed about security updates and patches for jQuery-Upload-File to address known vulnerabilities.
Regularly monitor security advisories and updates from trusted sources to maintain a secure development environment.

Patching and Updates

Apply the latest patches and updates released by the vendor to fix the identified XSS vulnerability in jQuery-Upload-File v4.0.11 and ensure the security of your systems.