CVE-2021-29109 : Exploit Details and Defense Strategies

A reflected XSS vulnerability in Esri Portal for ArcGIS version 10.9 and below has been identified, potentially allowing remote attackers to execute arbitrary JavaScript code in a user's browser.

Understanding CVE-2021-29109

This CVE involves a reflected XSS vulnerability in Esri Portal for ArcGIS version 10.9, impacting security.

What is CVE-2021-29109?

CVE-2021-29109 is a reflected XSS vulnerability in Esri Portal for ArcGIS version 10.9 that could be exploited by convincing a user to click on a specially crafted link to execute malicious JavaScript in their browser.

The Impact of CVE-2021-29109

The vulnerability could allow remote attackers to execute arbitrary code in a user's browser, posing a risk of unauthorized data access and potential malicious activities.

Technical Details of CVE-2021-29109

The technical details of CVE-2021-29109 include the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability involves a reflected XSS issue in Esri Portal for ArcGIS version 10.9 and below, triggered by convincing users to click on malicious links.

Affected Systems and Versions

The vulnerability affects Esri Portal for ArcGIS version 10.9 and earlier versions, specifically on the x64 platform.

Exploitation Mechanism

Remote attackers can exploit this vulnerability by tricking users into clicking on specially crafted links that execute arbitrary JavaScript code in their browsers.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-29109, immediate steps should be taken along with implementing long-term security practices and timely patching and updates.

Immediate Steps to Take

Users and administrators are advised to be cautious while clicking on links, especially those that appear suspicious, to prevent exploitation of the vulnerability.

Long-Term Security Practices

Regular security awareness training, web application security testing, and secure coding practices can help prevent XSS vulnerabilities like CVE-2021-29109.

Patching and Updates

Esri has released a security update addressing this vulnerability. Ensure that the system running Esri Portal for ArcGIS is updated with the latest patch to mitigate the risk of exploitation.