CVE-2018-20664 : Exploit Details and Defense Strategies

An XXE vulnerability through an uploaded product license can be found in Zoho ManageEngine ADSelfService Plus 5.x prior to build 5701.

Understanding CVE-2018-20664

Zoho ManageEngine ADSelfService Plus 5.x before build 5701 has an XXE vulnerability through an uploaded product license.

What is CVE-2018-20664?

This CVE refers to an XML External Entity (XXE) vulnerability present in Zoho ManageEngine ADSelfService Plus 5.x versions before build 5701. The vulnerability arises from an uploaded product license.

The Impact of CVE-2018-20664

The vulnerability could allow an attacker to exploit the XXE issue, potentially leading to unauthorized access, data disclosure, or other malicious activities on affected systems.

Technical Details of CVE-2018-20664

Zoho ManageEngine ADSelfService Plus 5.x before build 5701 is susceptible to an XXE vulnerability through an uploaded product license.

Vulnerability Description

The vulnerability allows attackers to exploit the XXE issue via a product license upload.

Affected Systems and Versions

Product: Zoho ManageEngine ADSelfService Plus
Versions affected: 5.x before build 5701

Exploitation Mechanism

Attackers can exploit this vulnerability by uploading a malicious product license, triggering the XXE vulnerability.

Mitigation and Prevention

To address CVE-2018-20664, follow these mitigation steps:

Immediate Steps to Take

Upgrade Zoho ManageEngine ADSelfService Plus to build 5701 or later.
Implement strict file upload validation to prevent malicious uploads.
Monitor system logs for any suspicious activities related to file uploads.

Long-Term Security Practices

Regularly update and patch software to mitigate known vulnerabilities.
Conduct security assessments and penetration testing to identify and address potential weaknesses.

Patching and Updates

Apply security patches and updates provided by Zoho ManageEngine promptly to address vulnerabilities like CVE-2018-20664.