CVE-2023-1939 : Exploit Details and Defense Strategies

This CVE record was published by DEVOLUTIONS on April 11, 2023. It pertains to a vulnerability in Devolutions Remote Desktop Manager that allows non-admin users to view OTP keys via the user interface.

Understanding CVE-2023-1939

This section will delve into the specifics of CVE-2023-1939, exploring its impact, technical details, and mitigation strategies.

What is CVE-2023-1939?

The vulnerability identified as CVE-2023-1939 exposes a lack of access control for the OTP key on OTP entries in Devolutions Remote Desktop Manager for both Windows and Linux systems. Specifically, versions prior to Windows 2022.3.33.0 and Linux 2022.3.2.0 are affected. This flaw enables non-administrative users to view OTP keys, posing a security risk.

The Impact of CVE-2023-1939

The impact of CVE-2023-1939 is significant as it compromises the confidentiality of OTP keys. Non-admin users gaining access to these keys could lead to unauthorized access to sensitive systems and data managed by Remote Desktop Manager.

Technical Details of CVE-2023-1939

In this section, we will outline the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The absence of access control mechanisms for OTP keys on OTP entries in Devolutions Remote Desktop Manager versions before Windows 2022.3.33.0 and Linux 2022.3.2.0 allows non-admin users to view OTP keys through the user interface, leading to a breach of security protocols.

Affected Systems and Versions

The vulnerability impacts Devolutions Remote Desktop Manager on Windows versions less than 2022.3.33.0 and Linux versions less than 2022.3.2.0. Users utilizing these versions are at risk of unauthorized access to OTP keys.

Exploitation Mechanism

Exploiting CVE-2023-1939 involves non-admin users leveraging the lack of access control to view OTP keys directly from the user interface. This could potentially be used by malicious actors to compromise sensitive information.

Mitigation and Prevention

Here we will discuss the immediate steps to take, long-term security practices, and the importance of patching and updates.

Immediate Steps to Take

Users are advised to update Devolutions Remote Desktop Manager to versions Windows 2022.3.33.0 and Linux 2022.3.2.0 or newer to mitigate the vulnerability. Additionally, restricting access to OTP keys and implementing robust access controls can help prevent unauthorized viewing.

Long-Term Security Practices

In the long term, organizations should prioritize regular security audits, access control reviews, and employee training on secure data handling practices to enhance overall cybersecurity preparedness.

Patching and Updates

Regularly applying software patches and updates provided by Devolutions is crucial to addressing vulnerabilities like CVE-2023-1939. Staying current with security releases helps ensure that systems are protected against known threats.