Critical WordPress Vulnerability Puts Websites at Risk

A critical security vulnerability, CVE-2024-10924, was recently discovered in the popular Really Simple Security plugin, which is widely used by over 4 million WordPress websites to enhance their security. This plugin is a key tool for protecting WordPress sites, making the vulnerability particularly alarming for businesses that rely on WordPress for their online presence.

Rated 9.8/10 in severity, this issue is one of the most severe in their 12-year history. The vulnerability exposes websites to risks such as unauthorized access to admin accounts, data breaches, and malware installation. Even more concerning, since the admin accounts are being compromised though this vulnerability, the websites can be exploited as gateways for broader cyberattacks, putting sensitive business data and operations at significant risk. Despite the severity of the flaw, many hosting providers and website administrators have yet to update the plugin to its secure version, leaving countless firms exposed to potential exploitation.

Nature of the vulnerability

The flaw resides in the plugin's implementation of two-factor authentication (2FA). Despite 2FA being a security enhancement, the vulnerability ironically exploits it. The issue stems from how Really Simple Security handles 2FA requests, allowing attackers to bypass authentication entirely. Alarmingly, an exploit requires only the username of the target—credentials are not needed.

What makes this vulnerability even more problematic is its compatibility with automated scripts, enabling malicious actors to quickly compromise websites at scale. Although 2FA is disabled by default, most administrators recommend enabling it as an additional layer of security. This well-intentioned practice places those accounts directly in the line of fire, making them more susceptible to exploitation due to the vulnerability.

Potential impact

A successful exploitation of this vulnerability can have devastating consequences, including:

• Full administrative control: Attackers gain unrestricted access to website content, user data, and configuration.
• Malware installation: Malicious software can be deployed to harm the site or its visitors.
• Launchpad for further attacks: Compromised sites may serve as platforms for targeting other systems.
• Operational disruption: Websites could experience downtime, defacement, or data loss.

Remediation and mitigation strategies

To protect against this vulnerability, WordPress administrators should act promptly to:

1. Update the plugin: Install the latest version (9.1.2 or newer) of Really Simple Security. Pro users received the fix on November 12, 2024, while free users gained access on November 14, 2024.
2. Maintain regular updates: Ensure both the WordPress core and all installed plugins are updated regularly. This practice safeguards your site against newly discovered vulnerabilities.
3. Monitor security logs: Regularly review your website's security logs to detect any unauthorized access attempts or suspicious activity. Early detection can prevent a full-scale compromise.

How we help

ACA Aponix^® can help your firm build your cybersecurity program to strengthen your line of defense against cyberattacks. Our services include:

• Aponix Protect^TM is a cybersecurity and technology risk solution that helps you build a comprehensive risk management program tailored to your business needs.
• ACA Vantage for Cyber offers comprehensive cyber health monitoring for portfolio companies. It combines advisory services, ComplianceAlpha^® technology, and RealRisk assessments to provide insights, mitigate risks, and enhance your competitive edge.
• Aponix Business Continuity Plan (BCP) Assessment provides a comprehensive evaluation of your organization’s current preparedness for disruptions. It identifies critical business functions, assesses potential risks, and offers actionable recommendations to strengthen resilience.

Reach out to your ACA consultant or contact us to find out how ACA can help secure your firm against cyber threats and comply with regulatory expectations.