CVE-2018-16629 : Exploit Details and Defense Strategies

Subrion CMS v4.2.1 in panel/uploads/#elf_l1_XA allows for cross-site scripting (XSS) attacks by exploiting an SVG file that contains JavaScript within a SCRIPT element.

Understanding CVE-2018-16629

This CVE involves a vulnerability in Subrion CMS v4.2.1 that enables XSS attacks through a specific file.

What is CVE-2018-16629?

CVE-2018-16629 is a security vulnerability in Subrion CMS v4.2.1 that permits cross-site scripting (XSS) attacks by leveraging an SVG file with embedded JavaScript.

The Impact of CVE-2018-16629

The vulnerability allows malicious actors to execute XSS attacks, potentially leading to unauthorized access, data theft, and other security breaches.

Technical Details of CVE-2018-16629

This section delves into the specifics of the CVE.

Vulnerability Description

The issue lies in panel/uploads/#elf_l1_XA in Subrion CMS v4.2.1, where an SVG file containing JavaScript within a SCRIPT element can be exploited for XSS attacks.

Affected Systems and Versions

Product: Subrion CMS v4.2.1
Vendor: N/A
Version: N/A

Exploitation Mechanism

The vulnerability is exploited by injecting malicious JavaScript code into an SVG file within a SCRIPT element, enabling attackers to execute XSS attacks.

Mitigation and Prevention

Protecting systems from CVE-2018-16629 requires immediate actions and long-term security measures.

Immediate Steps to Take

Disable file uploads that contain executable code or scripts.
Implement input validation to sanitize user inputs and prevent script injection.
Regularly monitor and audit uploaded files for malicious content.

Long-Term Security Practices

Keep Subrion CMS and all related software up to date with the latest security patches.
Educate users and administrators about the risks of XSS attacks and best security practices.

Patching and Updates

Ensure that Subrion CMS is patched to the latest version to mitigate the vulnerability and protect against potential XSS attacks.