CVE-2020-10189 : Exploit Details and Defense Strategies

Zoho ManageEngine Desktop Central before 10.0.474 allows remote code execution due to deserialization of untrusted data in getChartImage in the FileStorage class. This vulnerability is related to the CewolfServlet and MDMLogUploaderServlet servlets.

Understanding CVE-2020-10189

This CVE involves a critical vulnerability in Zoho ManageEngine Desktop Central that can lead to remote code execution.

What is CVE-2020-10189?

CVE-2020-10189 is a security flaw in Zoho ManageEngine Desktop Central that allows attackers to execute remote code by exploiting the deserialization of untrusted data in specific servlets.

The Impact of CVE-2020-10189

The impact of this CVE is rated as critical with a CVSS base score of 9.8. It poses a high risk to confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2020-10189

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability arises from the improper handling of untrusted data during deserialization in the FileStorage class within Zoho ManageEngine Desktop Central.

Affected Systems and Versions

Product: Zoho ManageEngine Desktop Central
Versions: Before 10.0.474

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: None
User Interaction: None
Scope: Unchanged
Vector String: CVSS:3.0/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:N

Mitigation and Prevention

Protecting systems from CVE-2020-10189 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Zoho ManageEngine Desktop Central to version 10.0.474 or later.
Implement network segmentation to limit exposure.
Monitor and restrict incoming network traffic.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Conduct security assessments and audits to identify vulnerabilities.
Educate users on safe computing practices to prevent exploitation.

Patching and Updates

Ensure that all software components, including Zoho ManageEngine Desktop Central, are regularly patched and updated to mitigate known vulnerabilities.