CVE-2021-42098 : Security Advisory and Response

An incomplete permission check in Devolutions Remote Desktop Manager before 2021.2.16 allows attackers to bypass permissions via batch custom PowerShell.

Understanding CVE-2021-42098

This CVE involves an insecure permission issue in Devolutions Remote Desktop Manager, potentially enabling unauthorized access.

What is CVE-2021-42098?

CVE-2021-42098 refers to an incomplete permission validation flaw in Devolutions Remote Desktop Manager, which could lead to permission bypass attacks via batch custom PowerShell.

The Impact of CVE-2021-42098

The vulnerability allows threat actors to circumvent access restrictions and potentially gain unauthorized entry to sensitive data and systems within affected versions.

Technical Details of CVE-2021-42098

This section delves into the specific technical aspects of the vulnerability.

Vulnerability Description

The flaw arises from an incomplete permission validation on entries within Devolutions Remote Desktop Manager, enabling malicious actors to exploit permissions using custom PowerShell scripts.

Affected Systems and Versions

Product: Remote Desktop Manager
Vendor: Devolutions
Vulnerable Versions: 2021.2.14 and earlier
Resolved Version: 2021.2.16

Exploitation Mechanism

Attackers exploit this vulnerability by leveraging batch custom PowerShell scripts to bypass permission checks within the Remote Desktop Manager, potentially gaining unauthorized access.

Mitigation and Prevention

To address CVE-2021-42098 effectively, follow these mitigation strategies:

Immediate Steps to Take

Update Devolutions Remote Desktop Manager to version 2021.2.16 or later.
Monitor system logs for any suspicious activities related to unauthorized access.
Implement the principle of least privilege to limit access rights and permissions.

Long-Term Security Practices

Conduct regular security audits and penetration testing to identify vulnerabilities.
Provide security awareness training to employees to recognize and report suspicious activities.

Patching and Updates

Regularly apply security patches and updates provided by Devolutions to ensure system security and address known vulnerabilities.