Critical Security Alert: CVE-2024-10924 and the “Really Simple Security” WordPress Plugin

Hello everyone,

As a penetration tester and security engineer, I want to bring to your attention a critical vulnerability that demands immediate action. CVE-2024-10924 impacts the “Really Simple Security” WordPress plugin, and addressing it should be your top priority if this tool is active on your website.

Key Information

CVE-2024-10924 affects versions 9.0.0 through 9.1.1.1 of the “Really Simple Security” plugin, exposing them to a severe zero-click authentication bypass vulnerability. This flaw allows attackers to gain unauthorized access to your site without any user interaction, posing significant risks of data breaches and other malicious exploits.

A Shodan search using the query:

http.title:"Really Simple Security (Free, Pro, And Pro Multisite) 9.0.0 - 9.1.1.1"

reveals that over 43,000 hosts are currently exposed. This method requires minimal skill to locate and exploit these hosts. If this plugin version is active on your system, the likelihood of exploitation is high.

For detailed technical insights, refer to the NVD details. Additionally, a proof of concept exploit is available on GitHub for those interested in the technical specifics.

The Exploit: Easy Access for Attackers

The exploit for CVE-2024-10924 is alarmingly accessible. Available as a proof of concept on GitHub, it requires little expertise to compromise affected systems. Attackers can easily use this tool to bypass authentication mechanisms without raising initial suspicions or requiring user input, making it a highly attractive vector for exploitation.

This ease of access underscores the urgency of the situation. Exploits are often used quickly and broadly once they become publicly available. Therefore, the longer you wait to patch your systems, the higher the risk of becoming a target.

Immediate Actions Required

1. Update the Plugin: A patch has been released in version 9.1.2. Upgrade to this version immediately to close the vulnerability.
2. Analyze Your Logs: Given the nature of the vulnerability, assume exploitation has occurred and scrutinize your logs for any signs of unauthorized access.
3. Review Security Practices: If your systems have been exposed, this is a timely reminder to review and strengthen your overall security posture. Regular updates and constant vigilance are essential.

Moving Forward

While CVE-2024-10924 highlights a significant risk, it also serves as a reminder of the importance of maintaining updated defenses against ever-present cyber threats. Keep your software updated, monitor your systems closely, and integrate regular security audits into your operational routine.

Ensuring the security of digital systems is a shared responsibility. Acting swiftly and decisively is crucial to mitigate this threat and help safeguard the broader digital ecosystem.

– Tanner Shinn, Principal Security Engineer