CVE-2018-18845 : What You Need to Know

The Advanced Comment System version 1.0 has a reflected cross-site scripting vulnerability that allows remote attackers to inject malicious code into web applications.

Understanding CVE-2018-18845

This CVE involves a security flaw in the Advanced Comment System version 1.0, enabling attackers to execute malicious scripts on vulnerable websites.

What is CVE-2018-18845?

The vulnerability in the Advanced Comment System version 1.0 permits unauthenticated remote attackers to insert harmful HTML or JavaScript code into a susceptible web application. When this code is reflected back to users, it can be executed by their browsers.

The Impact of CVE-2018-18845

The presence of this vulnerability poses a severe risk to web applications utilizing the Advanced Comment System version 1.0. Attackers can exploit this flaw to perform cross-site scripting attacks, potentially compromising user data and system integrity.

Technical Details of CVE-2018-18845

This section delves into the specifics of the vulnerability, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability exists in the files internal/advanced_comment_system/index.php and internal/advanced_comment_system/admin.php of the Advanced Comment System version 1.0. The flaw allows attackers to inject and execute malicious scripts through ACS_path.

Affected Systems and Versions

Product: Advanced Comment System
Version: 1.0
Status: Affected

Exploitation Mechanism

Attackers, without authentication, can exploit this vulnerability by injecting malicious code into the web application. The injected code is then reflected back to users and executed by their browsers.

Mitigation and Prevention

Protecting systems from CVE-2018-18845 requires immediate actions and long-term security practices.

Immediate Steps to Take

Disable or remove the Advanced Comment System version 1.0 from the web application to prevent exploitation.
Implement input validation to sanitize user inputs and prevent script injection.

Long-Term Security Practices

Regularly update and patch web applications to address security vulnerabilities promptly.
Conduct security audits and penetration testing to identify and mitigate potential risks.

Patching and Updates

Check for security patches or updates provided by the vendor to fix the vulnerability in the Advanced Comment System version 1.0.