CVE-2018-20351 Explained : Impact and Mitigation

Evernote's Markdown component in versions before 8.3.2 on macOS is vulnerable to stored XSS, also referred to as MAC-832.

Understanding CVE-2018-20351

The Markdown component in Evernote (Chinese) before 8.3.2 on macOS allows stored XSS, aka MAC-832.

What is CVE-2018-20351?

The vulnerability in Evernote's Markdown component allows for stored XSS attacks on macOS systems.

The Impact of CVE-2018-20351

This vulnerability could be exploited by attackers to execute malicious scripts within the context of the user's session, potentially leading to unauthorized actions.

Technical Details of CVE-2018-20351

Vulnerability Description

Vulnerability Type: Stored Cross-Site Scripting (XSS)
CVE ID: CVE-2018-20351
Component: Evernote's Markdown

Affected Systems and Versions

Systems: macOS
Versions: Before 8.3.2

Exploitation Mechanism

Attackers can craft malicious scripts that are stored within the application, triggering when accessed by users, leading to unauthorized actions.

Mitigation and Prevention

Immediate Steps to Take

Update Evernote to version 8.3.2 or later to mitigate the vulnerability.
Avoid clicking on suspicious links or downloading files from untrusted sources.

Long-Term Security Practices

Regularly update software and applications to patch known vulnerabilities.
Implement security measures such as content security policies to prevent XSS attacks.

Patching and Updates

Stay informed about security updates from Evernote and apply patches promptly to ensure protection against potential threats.