CVE-2024-8791

Comprehensive Technical Analysis of CVE-2024-8791

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2024-8791 CVSS Score: 9.8

The vulnerability in the Donation Forms by Charitable – Donations Plugin & Fundraising Platform for WordPress allows for privilege escalation due to improper verification of a user's identity when the ID parameter is supplied through the update_core_user() function. This flaw enables unauthenticated attackers to update the email address and password of arbitrary user accounts, including administrators.

Severity Evaluation:

• CVSS Base Score: 9.8 (Critical)
• Impact: High
• Exploitability: High

The high CVSS score indicates a critical vulnerability that can be easily exploited with severe consequences, including full administrative control over the affected WordPress site.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Unauthenticated Access: Attackers can exploit this vulnerability without needing to authenticate, making it particularly dangerous.
• Parameter Manipulation: The vulnerability is triggered by manipulating the ID parameter in the update_core_user() function.

Exploitation Methods:

• Email and Password Update: An attacker can send a crafted request to the vulnerable endpoint, updating the email and password of any user, including administrators.
• Account Takeover: Once the email and password are updated, the attacker can log in as the compromised user, gaining full access to their account.

3. Affected Systems and Software Versions

Affected Software:

• Donation Forms by Charitable – Donations Plugin & Fundraising Platform for WordPress

Affected Versions:

• All versions up to and including 1.8.1.14

Platform:

• WordPress

4. Recommended Mitigation Strategies

Immediate Actions:

• Update the Plugin: Ensure that the plugin is updated to a version that addresses this vulnerability.
• Disable the Plugin: If an update is not available, consider disabling the plugin until a patch is released.

Long-Term Mitigations:

• Regular Updates: Keep all WordPress plugins and core files up to date.
• Access Controls: Implement strict access controls and monitor for unusual activity.
• Security Plugins: Use security plugins like Wordfence to monitor and protect against such vulnerabilities.

5. Impact on Cybersecurity Landscape

Broader Implications:

• Widespread Use: Given the popularity of WordPress and the Charitable plugin, this vulnerability poses a significant risk to a large number of websites.
• Reputation Damage: Compromised websites can suffer data breaches, financial loss, and reputational damage.
• Increased Attack Surface: Vulnerabilities in widely-used plugins increase the overall attack surface for cybercriminals.

6. Technical Details for Security Professionals

Vulnerable Function:

• update_core_user()

Code Reference:

• The vulnerability is located in the class-charitable-user.php file, specifically around line 872 in version 1.8.1.14.

Patch Information:

• The patch can be reviewed in the changeset 3154009.

Exploit Details:

• The exploit involves sending a crafted request to the vulnerable endpoint with a manipulated ID parameter, allowing the attacker to update the email and password of any user.

Detection and Monitoring:

• Log Analysis: Monitor server logs for unusual update requests to the update_core_user() function.
• Intrusion Detection Systems (IDS): Implement IDS rules to detect and alert on suspicious activity related to this vulnerability.

Conclusion: CVE-2024-8791 represents a critical vulnerability in the Charitable plugin for WordPress, allowing unauthenticated attackers to escalate privileges and take over user accounts. Immediate mitigation through updates and strict access controls is essential to protect against potential exploits. The broader cybersecurity community should be aware of the risks posed by such vulnerabilities in widely-used plugins and take proactive measures to secure their environments.