CVE-2020-8838 : Security Advisory and Response

An issue was discovered in Zoho ManageEngine AssetExplorer 6.5 that allows remote code execution on Windows agent machines.

Understanding CVE-2020-8838

What is CVE-2020-8838?

CVE-2020-8838 is a vulnerability in Zoho ManageEngine AssetExplorer 6.5 that enables an attacker to execute code with NT AUTHORITY/SYSTEM privileges on Windows agent machines.

The Impact of CVE-2020-8838

The vulnerability permits an attacker on an adjacent network to execute arbitrary code on the agent machines through a man-in-the-middle attack.

Technical Details of CVE-2020-8838

Vulnerability Description

During a Windows agent upgrade, the software fails to validate the source and binary downloaded, leading to the execution of unauthorized code.

Affected Systems and Versions

Product: Zoho ManageEngine AssetExplorer 6.5
Vendor: Zoho
Versions: All versions are affected

Exploitation Mechanism

The vulnerability allows an attacker to provide an arbitrary executable via a man-in-the-middle attack, resulting in code execution with elevated privileges.

Mitigation and Prevention

Immediate Steps to Take

Implement network segmentation to limit exposure
Monitor network traffic for suspicious activities
Apply vendor-supplied patches promptly

Long-Term Security Practices

Regularly update and patch software to address vulnerabilities
Conduct security training for employees to recognize and report suspicious activities

Patching and Updates

Refer to Zoho ManageEngine AssetExplorer 6.5 security advisories