CVE-2018-16625 : What You Need to Know

Typesetter 5.1's index.php/Admin/Uploaded feature exposes a cross-site scripting (XSS) vulnerability through an SVG file containing JavaScript within a SCRIPT element.

Understanding CVE-2018-16625

This CVE entry describes a specific XSS vulnerability in Typesetter 5.1 that can be exploited through a crafted SVG file.

What is CVE-2018-16625?

The vulnerability in Typesetter 5.1 allows attackers to execute malicious scripts by uploading an SVG file with JavaScript embedded in a SCRIPT element.

The Impact of CVE-2018-16625

This vulnerability can lead to unauthorized script execution in the context of the user's browser, potentially compromising sensitive data or performing actions on behalf of the user.

Technical Details of CVE-2018-16625

Vulnerability Description

The XSS vulnerability in Typesetter 5.1 is due to improper validation of uploaded SVG files, allowing malicious scripts to be executed.

Affected Systems and Versions

Product: Typesetter 5.1
Vendor: N/A
Version: N/A

Exploitation Mechanism

Attackers can exploit this vulnerability by uploading an SVG file containing JavaScript within a SCRIPT element, which is then executed in the context of the user's browser.

Mitigation and Prevention

Immediate Steps to Take

Disable the affected feature or restrict file uploads to prevent SVG files with embedded scripts.
Regularly monitor and review uploaded files for any suspicious content.

Long-Term Security Practices

Implement input validation mechanisms to ensure uploaded files do not contain executable scripts.
Educate users on safe file handling practices to prevent the upload of malicious files.

Patching and Updates

Check for security patches or updates from the Typesetter vendor to address this vulnerability.