CVE-2018-18198 : Security Advisory and Response

REDAXO 5.6.3 is vulnerable due to improper filtering of the $opener_input_field variable, allowing for potential XSS attacks.

Understanding CVE-2018-18198

The vulnerability in REDAXO 5.6.3 enables attackers to inject malicious scripts through crafted requests.

What is CVE-2018-18198?

The vulnerability arises from inadequate filtering of the $opener_input_field variable in REDAXO 5.6.3, leading to the execution of cross-site scripting (XSS) attacks.

The Impact of CVE-2018-18198

Attackers can exploit this vulnerability to execute XSS attacks by injecting malicious payloads through specific requests.

Technical Details of CVE-2018-18198

The technical aspects of the vulnerability in REDAXO 5.6.3 are as follows:

Vulnerability Description

The $opener_input_field variable in addons/mediapool/pages/index.php is not properly filtered, allowing for the direct display of unsanitized content on the page.

Affected Systems and Versions

Product: REDAXO
Version: 5.6.3

Exploitation Mechanism

Attackers can send a crafted request like index.php?page=mediapool/media&opener_input_field=[XSS] to insert XSS payloads.

Mitigation and Prevention

Protect your systems from CVE-2018-18198 with the following measures:

Immediate Steps to Take

Update REDAXO to version 5.6.4 to mitigate the vulnerability.
Implement input validation and output encoding to prevent XSS attacks.

Long-Term Security Practices

Regularly monitor and audit your web applications for security vulnerabilities.
Educate developers on secure coding practices to prevent similar issues.

Patching and Updates

Stay informed about security updates and patches released by REDAXO to address vulnerabilities.