CVE-2021-24364 : Exploit Details and Defense Strategies

Jannah WordPress theme before version 5.4.4 is vulnerable to a Reflected Cross-Site Scripting (XSS) issue due to improper sanitization of the options JSON parameter in the tie_get_user_weather AJAX action.

Understanding CVE-2021-24364

This CVE identifies a security vulnerability in the Jannah WordPress theme that could allow an attacker to execute malicious scripts in the context of an unsuspecting user's web session.

What is CVE-2021-24364?

The vulnerability in Jannah WordPress theme version less than 5.4.4 allows for Reflected Cross-Site Scripting (XSS) attacks by not properly sanitizing the options JSON parameter, enabling malicious script execution.

The Impact of CVE-2021-24364

This XSS vulnerability could be exploited by an attacker to execute arbitrary JavaScript code within the user's browser, potentially leading to sensitive data theft or unauthorized actions.

Technical Details of CVE-2021-24364

This section covers specific technical details of the security vulnerability.

Vulnerability Description

The issue arises due to the lack of proper sanitization of the options JSON parameter, which can be exploited by an attacker to inject and execute malicious scripts.

Affected Systems and Versions

Jannah WordPress theme versions prior to 5.4.4 are affected by this XSS vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious link and tricking an authenticated user into clicking on it, leading to the execution of arbitrary scripts in the user's session.

Mitigation and Prevention

Protecting systems and users from CVE-2021-24364 requires immediate actions and long-term security practices.

Immediate Steps to Take

Users should update their Jannah WordPress theme to version 5.4.4 or newer to mitigate the XSS vulnerability. Additionally, avoid clicking on untrusted links to prevent exploitation.

Long-Term Security Practices

Regularly update themes, plugins, and WordPress core to address security vulnerabilities promptly. Implement content security policies and input validation to reduce XSS attack risks.

Patching and Updates

Stay informed about security updates for themes and plugins. Enable automatic updates where possible and regularly monitor security advisories from trusted sources.