CVE-2020-5528 : Security Advisory and Response

A cross-site scripting vulnerability in Movable Type series allows remote attackers to inject arbitrary web script or HTML, impacting various versions of the software.

Understanding CVE-2020-5528

This CVE involves a security issue in the Movable Type series that could be exploited by attackers to inject malicious scripts or HTML code.

What is CVE-2020-5528?

The vulnerability in Movable Type series versions allows remote attackers to insert unauthorized web scripts or HTML through a manipulated URL in the block editor and rich text editor.

The Impact of CVE-2020-5528

The vulnerability poses a risk of unauthorized script injection, potentially leading to various attacks such as data theft, unauthorized access, and website defacement.

Technical Details of CVE-2020-5528

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability in Movable Type series versions enables remote attackers to execute cross-site scripting attacks by injecting malicious web scripts or HTML code.

Affected Systems and Versions

Product: Movable Type series
Vendor: Six Apart Ltd
Affected Versions: Movable Type 7 r.4603 and earlier, Movable Type 6.5.2 and earlier, Movable Type Advanced 7 r.4603 and earlier, Movable Type Advanced 6.5.2 and earlier, Movable Type Premium 1.26 and earlier, Movable Type Premium Advanced 1.26 and earlier

Exploitation Mechanism

The vulnerability can be exploited by remote attackers through specially crafted URLs to inject malicious web scripts or HTML in the block editor and rich text editor.

Mitigation and Prevention

Protect your systems from CVE-2020-5528 with these security measures.

Immediate Steps to Take

Apply security patches provided by the vendor immediately.
Implement input validation to sanitize user inputs and prevent script injection.
Monitor and filter user-generated content for malicious scripts.

Long-Term Security Practices

Regularly update and patch software to address security vulnerabilities.
Conduct security audits and penetration testing to identify and mitigate potential risks.

Patching and Updates

Stay informed about security updates and patches released by Six Apart Ltd for the Movable Type series.