External risk intelligence

Evernote for macOS Code Execution Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2023-50643

The vulnerability affects a desktop client application (Evernote for macOS). Desktop software is typically installed on end-user workstations, operates locally, and is not designed to be an internet-facing service, gateway, or public-facing network endpoint.

Evernote

10.68.2

Halo Surface Signal: 1 out of 5 — much less likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

This advisory details a critical vulnerability in Evernote for macOS that could allow remote attackers to execute arbitrary code. The issue lies within specific components of the application, potentially enabling unauthorized actions if exploited. The primary concern is to confirm if this specific version of Evernote is in use within our environment.

Code execution flaw in Evernote for macOS.
Impacts desktop software, relevance needs confirmation.
Understand exposure; verify software and versions.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by sending a specially crafted request to the Evernote application on macOS. This would involve interacting with specific components within the application that are susceptible to code injection. If successful, the attacker could execute arbitrary code on the targeted system.

Network access required to reach the application.
Vulnerable components are `RunAsNode` and `enableNodeClilnspectArguments`.
Risk of arbitrary code execution.

Live Threat

Current exploitation, exposure, and threat context

A remote attacker could execute arbitrary code on a user's macOS device by exploiting a vulnerability in Evernote's RunAsNode and enableNodeClilnspectArguments components. This could potentially lead to the compromise of the affected system.

System files and user data may be accessed.
Exploitation may occur via network access.
Full system compromise is a potential consequence.

Operational Fix

Recommended remediation, mitigation, and detection steps

This critical vulnerability in Evernote for macOS impacts the RunAsNode and enableNodeCliInspectArguments components, allowing remote code execution. Owners of the Evernote application, likely desktop support or endpoint management teams, must identify affected installations. The initial step involves confirming the presence of the vulnerable version, assessing its business criticality and network reachability, and then coordinating remediation with the relevant asset owners.

Identify and prioritize affected systems.
Verify business criticality and exposure.
Plan targeted remediation or mitigation.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is Evernote for macOS?

Evernote for macOS is a desktop application designed for note-taking, organization, and document archiving. It allows users to store text, images, and files locally while syncing them across devices. This software relies on the Electron framework to function on the desktop, which is where the affected components reside.

How does CVE-2023-50643 impact application security?

This vulnerability involves an Improper Neutralization of Special Elements, which allows an attacker to run arbitrary commands. Specifically, the application's implementation of the RunAsNode and enableNodeCliInspectArguments components can be manipulated to bypass standard security controls, effectively granting an attacker unauthorized control over the software's execution process.

How can an attacker trigger this vulnerability?

An attacker triggers the flaw by sending a specially crafted request to the Evernote application. It is important to note that typical user interaction with notes or standard interface browsing does not automatically trigger the bug. The attack requires interaction with specific underlying Node.js components that are exposed within this version of the application.

Is my device at risk based on Halo Surface Signal?

Halo Surface Signal identifies this as very unlikely for traditional network environments. Because Evernote is a desktop client rather than an internet-facing gateway or server, it is typically restricted to end-user workstations. The risk is primarily contained to the local system rather than a broad, public-facing network service.

What should I do if I use this version of Evernote?

You should first verify if you are running version 10.68.2 of Evernote for macOS. If this version is present, confirm if the software is required for your current tasks. The primary response involves identifying these installations and coordinating with your internal support teams to update the application to a patched version, as this will remove the vulnerable components.

References

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.