CVE-2021-24536 Explained : Impact and Mitigation
Learn about CVE-2021-24536, a Stored Cross-Site Scripting (XSS) vulnerability in Custom Login Redirect plugin <= 1.0.0 for WordPress. Understand the impact, technical details, and mitigation steps.
A Stored Cross-Site Scripting (XSS) vulnerability has been identified in the Custom Login Redirect WordPress plugin version 1.0.0 and below. This vulnerability is caused by the lack of CSRF check and inadequate sanitization of user inputs, allowing malicious attackers to execute arbitrary scripts.
Understanding CVE-2021-24536
This CVE details a security issue in the Custom Login Redirect plugin for WordPress that could be exploited by attackers to inject malicious scripts into the plugin's settings page.
What is CVE-2021-24536?
The Custom Login Redirect WordPress plugin version 1.0.0 and below is susceptible to Stored Cross-Site Scripting (XSS) due to the absence of CSRF checks and inadequate sanitization of user inputs.
The Impact of CVE-2021-24536
This vulnerability could be exploited by attackers to inject malicious scripts into the plugin's settings page, potentially leading to unauthorized actions and data theft on the affected WordPress site.
Technical Details of CVE-2021-24536
The vulnerability description, affected systems, and exploitation mechanism of CVE-2021-24536 are detailed below.
Vulnerability Description
The Custom Login Redirect WordPress plugin through version 1.0.0 lacks CSRF checks when saving settings and fails to properly sanitize user inputs, resulting in a Stored Cross-Site Scripting (XSS) vulnerability.
Affected Systems and Versions
Custom Login Redirect version 1.0.0 and earlier are affected by this vulnerability.
Exploitation Mechanism
Malicious actors can exploit this vulnerability by injecting crafted scripts through the plugin's settings page, which could then be executed in the context of site administrators or visitors.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-24536, immediate steps can be taken along with long-term security practices and timely patching and updates.
Immediate Steps to Take
Site administrators should deactivate or uninstall the vulnerable Custom Login Redirect plugin and consider alternative solutions until a patch is available.
Long-Term Security Practices
Implement robust input validation and output sanitization practices in WordPress plugins to prevent XSS and CSRF vulnerabilities.
Patching and Updates
Stay informed about security updates for WordPress plugins and regularly apply patches to ensure protection against known vulnerabilities.