CVE-2021-24421 Explained : Impact and Mitigation

A Stored Cross-Site Scripting vulnerability has been discovered in the WP JobSearch WordPress plugin before version 1.7.4, allowing low-privilege users to inject malicious JavaScript payloads on the 'my-resume' page.

Understanding CVE-2021-24421

This CVE involves an Authenticated Stored XSS vulnerability in WP JobSearch plugin versions prior to 1.7.4.

What is CVE-2021-24421?

The WP JobSearch plugin, before version 1.7.4, fails to properly sanitize specific parameters on the 'my-resume' page, enabling attackers with limited privileges to execute JavaScript payloads, leading to Stored Cross-Site Scripting.

The Impact of CVE-2021-24421

This vulnerability could allow an authenticated attacker with lower privileges to inject malicious scripts, potentially compromising the security and integrity of the WordPress site.

Technical Details of CVE-2021-24421

The following technical aspects are associated with this CVE:

Vulnerability Description

The vulnerability arises due to unsanitized parameters on the 'my-resume' page, facilitating an Authenticated Stored Cross-Site Scripting attack.

Affected Systems and Versions

WP JobSearch versions earlier than 1.7.4 are affected by this Stored XSS vulnerability.

Exploitation Mechanism

Low-privilege authenticated users can inject JavaScript payloads in specific parameters on the 'my-resume' page to conduct a Stored Cross-Site Scripting attack.

Mitigation and Prevention

To safeguard systems from this vulnerability, it is crucial to take the following measures:

Immediate Steps to Take

Update WP JobSearch plugin to version 1.7.4 or later to mitigate the vulnerability.
Regularly monitor for any suspicious activities or unauthorized changes on the 'my-resume' page.

Long-Term Security Practices

Implement least privilege access controls to restrict user capabilities within the plugin.
Educate users to avoid clicking on suspicious links or downloading attachments from unknown sources.

Patching and Updates

Ensure prompt installation of security patches and updates released by the WP JobSearch plugin to address known vulnerabilities and enhance overall system security.