CVE-2019-17550 : What You Need to Know

The WordPress plugin Blog2Social, version before 5.9.0, is vulnerable to Cross Site Scripting (XSS) attacks that can allow unauthorized execution of HTML and JavaScript code.

Understanding CVE-2019-17550

This CVE involves a security vulnerability in the Blog2Social plugin for WordPress, potentially enabling attackers to execute malicious code.

What is CVE-2019-17550?

The vulnerability in the Blog2Social plugin allows attackers to run unauthorized HTML and JavaScript code by exploiting the b2s_id parameter in the views/b2s/post.calendar.php component.

The Impact of CVE-2019-17550

The vulnerability permits attackers to trigger a reflected XSS attack when an Administrator clicks on a malicious URL while logged in, potentially leading to unauthorized code execution.

Technical Details of CVE-2019-17550

The technical aspects of the CVE-2019-17550 vulnerability are as follows:

Vulnerability Description

The vulnerability in the Blog2Social plugin before version 5.9.0 for WordPress is a Cross Site Scripting (XSS) issue that allows attackers to execute arbitrary HTML and JavaScript code via the b2s_id parameter.

Affected Systems and Versions

Product: Blog2Social
Vendor: N/A
Versions Affected: Before 5.9.0

Exploitation Mechanism

The attack vector involves the Administrator being logged in and clicking on a malicious URL, triggering a reflected XSS attack through the b2s_id parameter.

Mitigation and Prevention

To address CVE-2019-17550, consider the following steps:

Immediate Steps to Take

Update the Blog2Social plugin to version 5.9.0 or later to mitigate the XSS vulnerability.
Avoid clicking on suspicious or untrusted URLs to prevent potential attacks.

Long-Term Security Practices

Regularly update all plugins and themes to the latest versions to patch known vulnerabilities.
Implement security best practices such as using strong passwords and limiting user privileges to reduce the attack surface.

Patching and Updates

Stay informed about security updates for WordPress plugins and promptly apply patches to ensure protection against known vulnerabilities.