EUVD-2025-7374

Comprehensive Technical Analysis of EUVD-2025-7374

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-7374 pertains to a PHP Object Injection flaw in the Donations Widget plugin for WordPress. This vulnerability allows unauthenticated attackers to inject a PHP Object through deserialization of untrusted input via the 'card_address' parameter. The presence of a Property-Oriented Programming (POP) chain further enables attackers to achieve remote code execution (RCE).

Severity Evaluation:

• CVSS Base Score: 9.8
• CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The high CVSS score indicates a critical vulnerability due to the following factors:

• Attack Vector (AV:N): Network exploitable.
• Attack Complexity (AC:L): Low complexity required for exploitation.
• Privileges Required (PR:N): No privileges required.
• User Interaction (UI:N): No user interaction required.
• Scope (S:U): Unchanged.
• Confidentiality (C:H), Integrity (I:H), Availability (A:H): High impact on all three.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Unauthenticated Access: Attackers can exploit this vulnerability without needing any authentication.
• Deserialization of Untrusted Input: The 'card_address' parameter is used to inject malicious PHP objects.

Exploitation Methods:

• PHP Object Injection: Attackers can craft a serialized PHP object and send it through the 'card_address' parameter.
• POP Chain Utilization: Once the object is injected, attackers can leverage a POP chain to execute arbitrary code on the server.

3. Affected Systems and Software Versions

Affected Software:

• GiveWP – Donation Plugin and Fundraising Platform
• Versions: All versions up to and including 3.19.4

Affected Systems:

• Any WordPress installation using the vulnerable versions of the GiveWP plugin.

4. Recommended Mitigation Strategies

Immediate Actions:

• Update the Plugin: Ensure that the GiveWP plugin is updated to a version higher than 3.19.4.
• Disable the Plugin: If an update is not immediately available, consider disabling the plugin until a patch is released.

Long-Term Mitigations:

• Input Validation: Implement strict input validation and sanitization for all user inputs.
• Deserialization Controls: Avoid using unserialize() on untrusted data. Use safer alternatives like JSON for data serialization.
• Regular Audits: Conduct regular security audits and code reviews to identify and mitigate similar vulnerabilities.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to European organizations using WordPress with the GiveWP plugin. Given the widespread use of WordPress and the critical nature of the vulnerability, it could lead to:

• Data Breaches: Unauthorized access to sensitive data.
• Service Disruptions: Potential denial of service attacks.
• Reputation Damage: Loss of trust from users and stakeholders.

Regulatory Compliance:

• Organizations must ensure compliance with GDPR and other relevant regulations by promptly addressing the vulnerability to protect user data.

6. Technical Details for Security Professionals

Vulnerability Details:

• Vulnerable Parameter: 'card_address'
• Exploitation Path: Deserialization of untrusted input leading to PHP Object Injection and subsequent RCE via a POP chain.

Code Review:

• Files to Review:
  • DonorRepository.php
  • BillingAddress.php
  • DonationRepository.php
• Key Functions: Focus on functions handling the 'card_address' parameter and any deserialization operations.

Detection and Monitoring:

• Log Analysis: Monitor logs for unusual deserialization activities and PHP object manipulations.
• Intrusion Detection Systems (IDS): Implement IDS rules to detect and alert on suspicious activities related to the 'card_address' parameter.

Patch Analysis:

• GitHub Pull Request: Review the pull request #7679 for detailed changes and ensure the patch addresses the vulnerability comprehensively.

References:

• Wordfence Threat Intelligence: Vulnerability Details
• WordPress Plugin Changesets:
  • DonorRepository.php
  • BillingAddress.php
  • DonationRepository.php

By addressing this vulnerability promptly and thoroughly, organizations can mitigate the risk of exploitation and ensure the security and integrity of their systems.