CVE-2021-3159 : Exploit Details and Defense Strategies

A stored cross-site scripting (XSS) vulnerability in the /sys/attachment/uploaderServlet component of Landray EKP V12.0.9.R.20160325 allows attackers to execute arbitrary web scripts or HTML via a crafted SVG, SHTML, or MHT file.

Understanding CVE-2021-3159

This section provides insights into the details and impact of the CVE-2021-3159 vulnerability.

What is CVE-2021-3159?

CVE-2021-3159 is a stored cross-site scripting (XSS) vulnerability in Landray EKP V12.0.9.R.20160325, enabling attackers to run malicious scripts through specially crafted files.

The Impact of CVE-2021-3159

The vulnerability poses a risk of arbitrary script execution on affected systems, potentially leading to unauthorized access and data theft.

Technical Details of CVE-2021-3159

Explore the specifics of the vulnerability, including affected systems, versions, and exploitation methods.

Vulnerability Description

The XSS flaw in /sys/attachment/uploaderServlet of Landray EKP V12.0.9.R.20160325 permits attackers to inject and execute malicious scripts via manipulated files.

Affected Systems and Versions

Landray EKP V12.0.9.R.20160325 is confirmed to be affected by the CVE-2021-3159 vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by uploading crafted SVG, SHTML, or MHT files to trigger the execution of unauthorized web scripts.

Mitigation and Prevention

Discover the essential steps to secure systems and prevent potential exploits.

Immediate Steps to Take

System administrators should restrict file upload capabilities and sanitize file inputs to mitigate the XSS risk.

Long-Term Security Practices

Regular security audits, employee training on secure coding practices, and monitoring for unusual file uploads can enhance long-term security.

Patching and Updates

Ensure the prompt installation of security patches released by Landray to address and remediate the CVE-2021-3159 vulnerability.