CVE-2019-13493 : Security Advisory and Response

Sitecore 9.0 rev 171002 contains a security vulnerability known as Persistent XSS in the Media Library and File Manager, allowing manipulation of the uploaded file extension parameter by authenticated users with limited privileges to inject arbitrary JavaScript.

Understanding CVE-2019-13493

This CVE entry describes a specific security vulnerability in Sitecore 9.0 rev 171002 related to Persistent XSS.

What is CVE-2019-13493?

Persistent XSS in Sitecore 9.0 rev 171002 allows authenticated users with restricted privileges to alter the uploaded file extension parameter, enabling the injection of arbitrary JavaScript into the system.

The Impact of CVE-2019-13493

The vulnerability poses a risk as it can be exploited by authenticated users with limited privileges to execute malicious scripts within the system, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2019-13493

This section provides more in-depth technical details regarding the CVE.

Vulnerability Description

Sitecore 9.0 rev 171002 is susceptible to Persistent XSS in the Media Library and File Manager, enabling unauthorized JavaScript injection by authenticated users with restricted privileges.

Affected Systems and Versions

Product: Sitecore 9.0 rev 171002
Vendor: N/A
Version: N/A

Exploitation Mechanism

The vulnerability arises from the ability of authenticated users with limited privileges to manipulate the uploaded file extension parameter, allowing them to inject arbitrary JavaScript code into the system.

Mitigation and Prevention

Protecting systems from CVE-2019-13493 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Monitor and restrict user privileges to minimize the impact of potential attacks.
Educate users on safe file handling practices to prevent malicious injections.

Long-Term Security Practices

Conduct regular security audits and vulnerability assessments.
Implement secure coding practices to mitigate XSS vulnerabilities.
Stay informed about security updates and best practices in web application security.
Consider implementing a web application firewall to filter and block malicious traffic.

Patching and Updates

Regularly check for security updates and patches released by Sitecore to address the Persistent XSS vulnerability in Sitecore 9.0 rev 171002.