CVE-2022-1613 : Security Advisory and Response

A detailed analysis of the CVE-2022-1613 vulnerability identified in the Restricted Site Access WordPress plugin before version 7.3.2.

Understanding CVE-2022-1613

This CVE highlights an access bypass vulnerability via IP spoofing in the Restricted Site Access WordPress plugin.

What is CVE-2022-1613?

The vulnerability in the plugin allows attackers to bypass IP-based restrictions by prioritizing specific HTTP headers to retrieve a visitor's IP address over PHP's REMOTE_ADDR.

The Impact of CVE-2022-1613

Exploitation of this vulnerability could lead to unauthorized access to restricted content on websites utilizing the affected plugin.

Technical Details of CVE-2022-1613

Here are the technical details related to CVE-2022-1613:

Vulnerability Description

The issue arises from the plugin's incorrect handling of IP addresses, which enables malicious actors to manipulate headers to gain access.

Affected Systems and Versions

The CVE affects versions of the Restricted Site Access plugin prior to 7.3.2.

Exploitation Mechanism

By manipulating HTTP headers, attackers can trick the plugin into granting access to restricted content.

Mitigation and Prevention

Mitigating the risks associated with CVE-2022-1613 requires immediate action from website administrators.

Immediate Steps to Take

Update the Restricted Site Access plugin to version 7.3.2 or newer.
Monitor for any unauthorized access or unusual activity on the website.

Long-Term Security Practices

Regularly update plugins and themes to patch security vulnerabilities.
Implement additional security measures such as IP whitelisting.

Patching and Updates

Ensure that all software components, including the WordPress core, plugins, and themes, are regularly updated to prevent exploitation of known vulnerabilities.