Description
The Media Manager for UserPro plugin for WordPress is vulnerable to unauthorized modification of data that can lead to privilege escalation due to a missing capability check on the add_capto_img() function in all versions up to, and including, 3.11.0. This makes it possible for unauthenticated attackers to update arbitrary options on the WordPress site. This can be leveraged to update the default role for registration to administrator and enable user registration for attackers to gain administrative user access to a vulnerable site.
EPSS Score:
0%
Comprehensive Technical Analysis of EUVD-2024-51127
1. Vulnerability Assessment and Severity Evaluation
The vulnerability described in EUVD-2024-51127 pertains to the Media Manager for UserPro plugin for WordPress. The issue arises from a missing capability check on the add_capto_img() function, which allows unauthorized modification of data. This can lead to privilege escalation, enabling unauthenticated attackers to update arbitrary options on the WordPress site. The severity of this vulnerability is rated with a CVSS Base Score of 9.8, indicating a critical risk.
CVSS Vector Breakdown:
- AV:N (Network): The vulnerability is exploitable over the network.
- AC:L (Low): The attack complexity is low, meaning it does not require specialized conditions.
- PR:N (None): No privileges are required to exploit the vulnerability.
- UI:N (None): No user interaction is required.
- S:U (Unchanged): The scope of the vulnerability does not change.
- C:H (High): Confidentiality impact is high.
- I:H (High): Integrity impact is high.
- A:H (High): Availability impact is high.
2. Potential Attack Vectors and Exploitation Methods
Attack Vectors:
- Unauthenticated Access: Attackers can exploit the vulnerability without needing to authenticate.
- Arbitrary Option Modification: The lack of capability checks allows attackers to modify critical WordPress options.
- Privilege Escalation: By updating the default role for registration to administrator and enabling user registration, attackers can gain administrative access.
Exploitation Methods:
- Direct HTTP Requests: Attackers can send crafted HTTP requests to the vulnerable endpoint to modify options.
- Automated Scripts: Malicious actors can use automated scripts to scan for vulnerable installations and exploit them en masse.
3. Affected Systems and Software Versions
Affected Software:
- Media Manager for UserPro Plugin for WordPress
- Versions: All versions up to and including 3.11.0
Affected Systems:
- WordPress Websites: Any WordPress site using the vulnerable versions of the Media Manager for UserPro plugin.
4. Recommended Mitigation Strategies
Immediate Actions:
- Update the Plugin: Ensure that the Media Manager for UserPro plugin is updated to a version higher than 3.11.0.
- Disable User Registration: Temporarily disable user registration to mitigate the risk of privilege escalation.
- Monitor for Suspicious Activity: Implement monitoring to detect any unauthorized changes to WordPress options.
Long-Term Strategies:
- Regular Updates: Maintain a regular update schedule for all plugins and themes.
- Access Controls: Implement strict access controls and capability checks in custom code.
- Security Plugins: Use security plugins like Wordfence to detect and block malicious activity.
5. Impact on European Cybersecurity Landscape
The vulnerability poses a significant risk to the European cybersecurity landscape, particularly for organizations and individuals using WordPress with the affected plugin. The potential for unauthenticated attackers to gain administrative access can lead to data breaches, website defacement, and other malicious activities. This underscores the importance of timely patching and regular security audits for widely-used CMS platforms like WordPress.
6. Technical Details for Security Professionals
Vulnerability Details:
- Function:
add_capto_img() - Issue: Missing capability check
- Impact: Allows unauthorized modification of data, leading to privilege escalation.
Detection Methods:
- Code Review: Conduct a thorough code review to identify missing capability checks.
- Log Analysis: Analyze server logs for unusual activity related to option modifications.
- Security Tools: Use tools like Wordfence to scan for vulnerabilities and monitor for suspicious behavior.
Patching and Remediation:
- Update Plugin: Ensure the plugin is updated to the latest version.
- Code Fixes: Implement capability checks in the
add_capto_img()function to prevent unauthorized access.
References:
By addressing this vulnerability promptly and implementing robust security measures, organizations can significantly reduce the risk of exploitation and protect their digital assets.