CVE-2019-18791 Explained : Impact and Mitigation

Lexmark printer MS812 and older devices have a vulnerability in their embedded web server, allowing for a cross-site scripting attack.

Understanding CVE-2019-18791

This CVE involves a stored XSS vulnerability in Lexmark printers, potentially exposing sensitive information.

What is CVE-2019-18791?

The Lexmark printer MS812 and several older Lexmark devices are susceptible to a cross-site scripting (XSS) attack due to a vulnerability in their embedded web server. This flaw can lead to unauthorized access to session credentials and other sensitive data through the user's web browser.

The Impact of CVE-2019-18791

Unauthorized individuals can exploit the vulnerability to access session credentials and sensitive information.

Technical Details of CVE-2019-18791

This section provides technical insights into the vulnerability.

Vulnerability Description

The vulnerability in the embedded web server of Lexmark printers allows for the storage and exploitation of a cross-site scripting (XSS) attack.

Affected Systems and Versions

Product: Lexmark printer MS812 and older Lexmark devices
Version: Not specified

Exploitation Mechanism

Attackers can inject malicious scripts into web pages viewed by users, leading to the execution of unauthorized actions.

Mitigation and Prevention

Protecting systems from CVE-2019-18791 is crucial to prevent unauthorized access and data exposure.

Immediate Steps to Take

Regularly check for security updates and patches from Lexmark.
Implement network security measures to detect and block XSS attacks.

Long-Term Security Practices

Educate users on safe browsing habits to minimize the risk of XSS attacks.
Conduct regular security assessments and penetration testing to identify and address vulnerabilities.

Patching and Updates

Apply patches and updates provided by Lexmark to address the vulnerability and enhance system security.