CVE-2017-15538 : Security Advisory and Response

A Stored XSS vulnerability in the Media Objects component of ILIAS versions prior to 5.1.21 and 5.2.x prior to 5.2.9 allows an authenticated user to inject JavaScript code, potentially leading to the acquisition of administrator privileges.

Understanding CVE-2017-15538

This CVE involves a security vulnerability in ILIAS that could be exploited by an authorized user to execute malicious JavaScript code.

What is CVE-2017-15538?

The vulnerability, known as Stored XSS, affects ILIAS versions before 5.1.21 and 5.2.x before 5.2.9, enabling an attacker to inject code through the setParameter function in class.ilMediaItem.php.

The Impact of CVE-2017-15538

The vulnerability allows an authenticated user to execute arbitrary JavaScript code, potentially leading to the compromise of administrator privileges within the ILIAS system.

Technical Details of CVE-2017-15538

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The vulnerability arises from improper input validation in the Media Objects component of ILIAS, allowing an attacker to inject and execute malicious JavaScript code.

Affected Systems and Versions

ILIAS versions prior to 5.1.21
ILIAS 5.2.x versions before 5.2.9

Exploitation Mechanism

The vulnerability can be exploited by an authenticated user injecting malicious JavaScript code through the setParameter function in class.ilMediaItem.php.

Mitigation and Prevention

Protect your systems from CVE-2017-15538 with these mitigation strategies.

Immediate Steps to Take

Update ILIAS to version 5.1.21 or 5.2.9 to patch the vulnerability.
Educate users on the risks of executing untrusted scripts within the application.

Long-Term Security Practices

Implement strict input validation mechanisms to prevent XSS attacks.
Regularly monitor and audit the application for any suspicious activities.

Patching and Updates

Apply security patches provided by ILIAS promptly to address known vulnerabilities.