CVE-2019-18653 : Security Advisory and Response

Avast Antivirus version 19.3.2369 build 19.3.4241.440 has a Cross Site Scripting (XSS) vulnerability in the Network Notification Popup feature, allowing attackers to execute JavaScript code.

Understanding CVE-2019-18653

This CVE involves a security issue in Avast Antivirus that could be exploited by attackers to run malicious JavaScript code.

What is CVE-2019-18653?

The vulnerability in Avast Antivirus allows for Cross Site Scripting (XSS) attacks through the Network Notification Popup feature, enabling the execution of JavaScript code using an SSID Name.

The Impact of CVE-2019-18653

This vulnerability could lead to unauthorized execution of JavaScript code by malicious actors, potentially compromising user data and system integrity.

Technical Details of CVE-2019-18653

Avast Antivirus version 19.3.2369 build 19.3.4241.440 is affected by this XSS vulnerability.

Vulnerability Description

The XSS flaw in the Network Notification Popup feature of Avast Antivirus allows attackers to inject and execute JavaScript code.

Affected Systems and Versions

Avast Antivirus versions 19.3.2369 build 19.3.4241.440

Exploitation Mechanism

Attackers can exploit this vulnerability by utilizing an SSID Name to execute malicious JavaScript code.

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices are crucial to mitigate the risks associated with CVE-2019-18653.

Immediate Steps to Take

Update Avast Antivirus to the latest version to patch the XSS vulnerability.
Avoid clicking on suspicious links or downloading files from untrusted sources.

Long-Term Security Practices

Regularly update antivirus software and security patches.
Educate users on safe browsing habits and the importance of cybersecurity awareness.

Patching and Updates

Ensure that Avast Antivirus is regularly updated to the latest version to address security vulnerabilities.