CVE-2020-29593 : Security Advisory and Response

Orchard CMS before 1.10 allows attackers to execute XSS payloads via the Media Settings Allowed File Types list field.

Understanding CVE-2020-29593

An issue in Orchard CMS allows for XSS payload execution through a specific field, potentially leading to security vulnerabilities.

What is CVE-2020-29593?

This CVE identifies a vulnerability in Orchard CMS versions prior to 1.10 that enables attackers to insert XSS payloads, triggering their execution when users try to upload restricted file types.

The Impact of CVE-2020-29593

The vulnerability can be exploited by malicious actors to execute arbitrary scripts within the context of the user's browser, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2020-29593

The following technical aspects are associated with CVE-2020-29593:

Vulnerability Description

Orchard CMS before version 1.10 is susceptible to XSS attacks via the Media Settings Allowed File Types list field.

Affected Systems and Versions

Product: Orchard CMS
Vendor: Orchard
Versions Affected: All versions before 1.10

Exploitation Mechanism

Attackers can inject XSS payloads into the Allowed File Types list field, triggering their execution upon attempting to upload disallowed file types.

Mitigation and Prevention

Protect your systems from CVE-2020-29593 with the following measures:

Immediate Steps to Take

Update Orchard CMS to version 1.10 or newer to mitigate the vulnerability.
Regularly monitor and sanitize user inputs to prevent XSS attacks.

Long-Term Security Practices

Conduct regular security audits and penetration testing to identify and address vulnerabilities.
Educate users on safe browsing practices and the risks of executing unknown scripts.

Patching and Updates

Stay informed about security patches and updates released by Orchard CMS to address known vulnerabilities.