CVE-2024-8353

Comprehensive Technical Analysis of CVE-2024-8353

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2024-8353 CVSS Score: 10

The vulnerability in the GiveWP – Donation Plugin and Fundraising Platform for WordPress allows for PHP Object Injection via deserialization of untrusted input through parameters such as 'give_title' and 'card_address'. This vulnerability can be exploited by unauthenticated attackers to inject PHP objects, potentially leading to arbitrary file deletion and remote code execution (RCE). The presence of a Property-Oriented Programming (POP) chain exacerbates the risk.

Severity Evaluation:

• Critical: The CVSS score of 10 indicates a critical vulnerability due to the potential for unauthenticated RCE, which can result in complete system compromise.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Unauthenticated Access: Attackers can exploit this vulnerability without needing any authentication, making it highly accessible.
• Deserialization of Untrusted Input: The vulnerability arises from the deserialization of user-controlled input, which can be manipulated to inject malicious PHP objects.

Exploitation Methods:

• PHP Object Injection: Attackers can craft specially designed input to inject PHP objects, which can then be used to execute arbitrary code.
• POP Chain Exploitation: By leveraging a POP chain, attackers can manipulate the injected objects to perform actions such as deleting arbitrary files or executing code.

3. Affected Systems and Software Versions

Affected Software:

• GiveWP – Donation Plugin and Fundraising Platform for WordPress

Affected Versions:

• All versions up to and including 3.16.1

Patched Versions:

• The issue was mostly patched in version 3.16.1, with further hardening added in version 3.16.2.

4. Recommended Mitigation Strategies

Immediate Actions:

• Update Plugin: Immediately update the GiveWP plugin to version 3.16.2 or later.
• Disable Plugin: If updating is not possible, consider disabling the plugin until a patch can be applied.

Long-Term Mitigations:

• Regular Updates: Ensure all WordPress plugins and themes are regularly updated to the latest versions.
• Input Validation: Implement strict input validation and sanitization to prevent untrusted input from being processed.
• Monitoring: Use security monitoring tools to detect and respond to suspicious activities.

5. Impact on Cybersecurity Landscape

Broader Implications:

• Widespread Use: Given the popularity of WordPress and the GiveWP plugin, this vulnerability poses a significant risk to a large number of websites.
• Exploitation Potential: The ease of exploitation and the critical nature of the vulnerability make it a prime target for attackers.
• Reputation Risk: Organizations using the affected plugin risk data breaches, financial loss, and reputational damage.

6. Technical Details for Security Professionals

Vulnerability Details:

• Deserialization Issue: The vulnerability stems from the deserialization of user-controlled input without proper validation.
• Bypass Mechanism: The presence of stripslashes_deep on user_info allows the is_serialized check to be bypassed, facilitating the injection of malicious objects.

Code References:

• Vulnerable Code: The vulnerability is present in the process-donation.php file, specifically around line 154 in version 3.16.0.
• Patch Details: Patches were applied in admin-actions.php, process-donation.php, and Utils.php in version 3.16.1, with additional hardening in version 3.16.2.

References:

• GiveWP Plugin Vulnerability
• Patch Details
• Third Party Advisory

Conclusion

CVE-2024-8353 represents a critical vulnerability in the GiveWP plugin for WordPress, allowing unauthenticated attackers to achieve RCE through PHP Object Injection. Immediate patching to version 3.16.2 is essential to mitigate this risk. Organizations should also implement robust input validation and regular security monitoring to protect against similar vulnerabilities in the future.