CVE-2025-13675

Comprehensive Technical Analysis of CVE-2025-13675

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2025-13675 Description: The Tiger theme for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 101.2.1. The vulnerability arises from the 'paypal-submit.php' file not restricting what user roles a user can register with, allowing unauthenticated attackers to register as an 'administrator' and gain full control over the site. CVSS Score: 9.8

Severity Evaluation:

• Critical: A CVSS score of 9.8 indicates a critical vulnerability. The high score is due to the potential for complete compromise of the WordPress site, leading to significant data breaches, unauthorized access, and potential financial loss.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Unauthenticated Access: Attackers can exploit this vulnerability without needing any prior authentication.
• Registration Form Manipulation: The attacker can manipulate the registration form to assign themselves the 'administrator' role.

Exploitation Methods:

• Direct Exploitation: An attacker can directly interact with the 'paypal-submit.php' file by submitting a crafted request that includes the 'administrator' role during the registration process.
• Automated Scripts: Attackers may use automated scripts to scan for vulnerable WordPress sites and exploit the vulnerability en masse.

3. Affected Systems and Software Versions

Affected Systems:

• WordPress Sites: Any WordPress site using the Tiger theme versions up to and including 101.2.1.

Software Versions:

• Tiger Theme: All versions up to and including 101.2.1.

4. Recommended Mitigation Strategies

Immediate Actions:

• Update Theme: Immediately update the Tiger theme to a version that addresses this vulnerability.
• Temporary Patch: If an update is not available, apply a temporary patch to restrict user roles during registration.

Long-Term Mitigations:

• Regular Updates: Ensure all themes, plugins, and WordPress core are regularly updated.
• Access Controls: Implement strict access controls and role-based permissions.
• Monitoring: Use security plugins like Wordfence to monitor for suspicious activities and unauthorized access attempts.

5. Impact on Cybersecurity Landscape

Broader Implications:

• Widespread Adoption: Given the popularity of WordPress and the Tiger theme, this vulnerability poses a significant risk to a large number of websites.
• Reputation Damage: Compromised sites can suffer reputational damage, loss of customer trust, and potential legal consequences.
• Escalation Risks: Successful exploitation can lead to further attacks, such as data exfiltration, malware distribution, and defacement.

6. Technical Details for Security Professionals

Vulnerability Details:

• File Involved: 'paypal-submit.php'
• Issue: Lack of user role restriction during registration.
• Exploit: Attackers can submit a registration request with the 'administrator' role, bypassing normal user role assignment.

Detection Methods:

• Log Analysis: Monitor server logs for unusual registration activities and role assignments.
• Intrusion Detection Systems (IDS): Deploy IDS to detect and alert on suspicious registration attempts.

Remediation Steps:

• Code Review: Conduct a thorough code review of the 'paypal-submit.php' file to ensure proper role validation.
• Patch Deployment: Apply patches provided by the theme developer to fix the vulnerability.
• Security Audits: Regularly perform security audits and penetration testing to identify and mitigate similar vulnerabilities.

Conclusion: CVE-2025-13675 represents a critical vulnerability in the Tiger theme for WordPress, allowing unauthenticated attackers to gain administrator access. Immediate action is required to update the theme and implement additional security measures to protect against potential exploitation. Regular monitoring and security audits are essential to maintain the integrity and security of WordPress sites.