CVE-2018-19836 Explained : Impact and Mitigation

This CVE-2018-19836 article provides insights into a vulnerability found in Metinfo version 6.1.3 that allows for the manipulation of HTTP headers, potentially leading to XSS filter bypass.

Understanding CVE-2018-19836

This CVE-2018-19836 vulnerability affects the Metinfo version 6.1.3 and involves the manipulation of HTTP headers to bypass XSS filters.

What is CVE-2018-19836?

The Metinfo version 6.1.3 vulnerability allows for the arbitrary setting of HTTP headers, including the Cookie header, and registration of variables from the $_COOKIE value, enabling potential XSS filter bypass.

The Impact of CVE-2018-19836

The vulnerability can be exploited in conjunction with CVE-2018-19835 to bypass various XSS filters, such as the Chrome XSS filter.

Technical Details of CVE-2018-19836

This section delves into the technical aspects of the CVE-2018-19836 vulnerability.

Vulnerability Description

The Metinfo version 6.1.3 vulnerability involves files like include/interface/applogin.php and common.inc.php, allowing for HTTP header manipulation and variable registration from $_COOKIE.

Affected Systems and Versions

Affected Product: Metinfo version 6.1.3
Vendor: N/A
Affected Version: N/A

Exploitation Mechanism

The vulnerability can be exploited by manipulating HTTP headers, particularly the Cookie header, to bypass XSS filters like the Chrome XSS filter.

Mitigation and Prevention

Protecting systems from CVE-2018-19836 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Metinfo to a patched version if available
Implement strict input validation to prevent header manipulation

Long-Term Security Practices

Regularly monitor and update security patches
Conduct security audits to identify and mitigate similar vulnerabilities

Patching and Updates

Check for security patches and updates from Metinfo
Apply patches promptly to address the vulnerability