CVE-2020-36383 : Security Advisory and Response

PageLayer before 1.3.5 allows reflected XSS via the font-size parameter.

Understanding CVE-2020-36383

PageLayer before version 1.3.5 is vulnerable to reflected XSS through the font-size parameter.

What is CVE-2020-36383?

CVE-2020-36383 is a vulnerability in PageLayer plugin versions prior to 1.3.5 that enables attackers to execute reflected cross-site scripting (XSS) attacks via the font-size parameter.

The Impact of CVE-2020-36383

This vulnerability has a CVSS base score of 6.1, categorizing it as a medium severity issue. The attack complexity is low, requiring user interaction, and it affects the integrity and confidentiality of the system.

Technical Details of CVE-2020-36383

PageLayer before version 1.3.5 is susceptible to a reflected XSS attack through the font-size parameter.

Vulnerability Description

The vulnerability allows attackers to inject malicious scripts into web pages viewed by other users.

Affected Systems and Versions

Product: PageLayer
Vendor: N/A
Versions affected: All versions before 1.3.5

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
User Interaction: Required
Privileges Required: None
Scope: Changed
Vector String: CVSS:3.1/AC:L/AV:N/A:N/C:L/I:L/PR:N/S:C/UI:R

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the impact of CVE-2020-36383.

Immediate Steps to Take

Update PageLayer to version 1.3.5 or newer to eliminate the vulnerability.
Regularly monitor for security advisories and patches from the plugin vendor.

Long-Term Security Practices

Implement input validation to prevent XSS attacks.
Educate users on safe browsing practices to minimize the risk of exploitation.

Patching and Updates

Apply security patches promptly to protect against known vulnerabilities.