CVE-2017-11739 : Exploit Details and Defense Strategies

Zoho ManageEngine Application Manager 13.1 Build 13100 allows an authenticated user with administrative privileges to create a widget on any dashboard, potentially leading to a cross-site scripting (XSS) vulnerability.

Understanding CVE-2017-11739

This CVE involves the exploitation of a feature in Zoho ManageEngine Application Manager 13.1 Build 13100 that enables the creation of a malicious widget containing harmful JavaScript code.

What is CVE-2017-11739?

An attacker can abuse the ability to add a widget with a "Custom HTML or Text" field to inject malicious scripts, posing an XSS risk.

The Impact of CVE-2017-11739

The vulnerability allows an attacker to execute arbitrary scripts in the context of the user's session, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2017-11739

Zoho ManageEngine Application Manager 13.1 Build 13100 vulnerability details.

Vulnerability Description

An authenticated user can create a widget with malicious JavaScript code, leading to a cross-site scripting vulnerability.

Affected Systems and Versions

Product: Zoho ManageEngine Application Manager 13.1 Build 13100
Vendor: Zoho
Version: All versions are affected

Exploitation Mechanism

An authenticated user with administrative privileges can add a widget to any dashboard.
The widget can contain harmful JavaScript code, exploiting the XSS vulnerability.

Mitigation and Prevention

Protecting systems from CVE-2017-11739.

Immediate Steps to Take

Disable the ability for users to add custom widgets with HTML or JavaScript content.
Regularly monitor dashboards for any unauthorized widgets.
Implement input validation to prevent the insertion of malicious scripts.

Long-Term Security Practices

Conduct regular security training to educate users on the risks of XSS attacks.
Keep software up to date to patch known vulnerabilities.

Patching and Updates

Apply patches provided by Zoho ManageEngine to address the XSS vulnerability.