CVE-2017-1000146 Explained : Impact and Mitigation

This CVE-2017-1000146 article provides insights into a vulnerability in Mahara versions 1.9.x, 1.10.x, and 15.04.x that allows for the execution of arbitrary JavaScript within a user's browser.

Understanding CVE-2017-1000146

This CVE involves a security flaw in Mahara versions that could lead to the execution of unauthorized JavaScript code in a user's browser.

What is CVE-2017-1000146?

Versions 1.9.x before 1.9.7, 1.10.x before 1.10.5, and 15.04.x before 15.04.2 of Mahara are susceptible to a vulnerability that enables the execution of arbitrary JavaScript within a logged-in user's browser. The issue stems from inadequate sanitization of the portfolio page title in the AJAX script responsible for updating the Add/remove watchlist link on artefact detail pages.

The Impact of CVE-2017-1000146

The vulnerability could allow an attacker to execute malicious JavaScript code in the context of a logged-in user, potentially leading to various security risks, including unauthorized access to sensitive information or performing actions on behalf of the user.

Technical Details of CVE-2017-1000146

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability in Mahara versions allows for the execution of arbitrary JavaScript within the browser of authenticated users due to improper handling of the portfolio page title in the AJAX script.

Affected Systems and Versions

Mahara versions 1.9.x before 1.9.7
Mahara versions 1.10.x before 1.10.5
Mahara versions 15.04.x before 15.04.2

Exploitation Mechanism

The vulnerability can be exploited by crafting a malicious payload and injecting it into the title of the portfolio page, triggering the execution of unauthorized JavaScript code in the user's browser.

Mitigation and Prevention

Protecting systems from CVE-2017-1000146 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Mahara to the latest patched version to mitigate the vulnerability.
Educate users about the risks of executing arbitrary JavaScript code and advise caution when interacting with unknown or suspicious content.

Long-Term Security Practices

Implement secure coding practices to sanitize user inputs and prevent script injection vulnerabilities.
Regularly monitor and audit web applications for security flaws to proactively identify and address potential risks.

Patching and Updates

Stay informed about security updates and patches released by Mahara and promptly apply them to ensure the protection of systems and data.