Description
Unrestricted Upload of File with Dangerous Type vulnerability in Ajar Productions Ajar in5 Embed allows Upload a Web Shell to a Web Server.This issue affects Ajar in5 Embed: from n/a through 3.1.3.
EPSS Score:
44%
Comprehensive Technical Analysis of EUVD-2024-44900
1. Vulnerability Assessment and Severity Evaluation
The vulnerability EUVD-2024-44900, also known as CVE-2024-50473, is classified as an "Unrestricted Upload of File with Dangerous Type" in the Ajar Productions Ajar in5 Embed plugin. This vulnerability allows an attacker to upload a web shell to a web server, which can lead to complete control over the server. The CVSS (Common Vulnerability Scoring System) base score of 10.0 indicates a critical severity level. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H breaks down as follows:
- AV:N (Attack Vector: Network) - The vulnerability is exploitable over the network.
- AC:L (Attack Complexity: Low) - The attack requires minimal skill or resources.
- PR:N (Privileges Required: None) - No privileges are required to exploit the vulnerability.
- UI:N (User Interaction: None) - No user interaction is required.
- S:C (Scope: Changed) - The vulnerability affects a component that is outside the security scope of the vulnerable component.
- C:H (Confidentiality: High) - There is a high impact on confidentiality.
- I:H (Integrity: High) - There is a high impact on integrity.
- A:H (Availability: High) - There is a high impact on availability.
2. Potential Attack Vectors and Exploitation Methods
The primary attack vector for this vulnerability is the unrestricted file upload functionality in the Ajar in5 Embed plugin. An attacker can exploit this by:
- Uploading a Web Shell: The attacker can upload a malicious script (web shell) that allows them to execute arbitrary commands on the server.
- Remote Code Execution (RCE): Once the web shell is uploaded, the attacker can execute commands remotely, leading to full server compromise.
- Data Exfiltration: The attacker can exfiltrate sensitive data from the server.
- Persistent Access: The attacker can maintain persistent access to the server, making it difficult to detect and remediate the breach.
3. Affected Systems and Software Versions
The vulnerability affects the Ajar in5 Embed plugin versions from n/a through 3.1.3. This means that all versions up to and including 3.1.3 are vulnerable. Organizations using this plugin within this version range are at risk.
4. Recommended Mitigation Strategies
To mitigate this vulnerability, the following steps should be taken:
- Immediate Patching: Upgrade to a patched version of the Ajar in5 Embed plugin if available. If no patch is available, consider disabling the plugin until a fix is released.
- Input Validation: Implement strict input validation and file type checks to prevent the upload of dangerous file types.
- Web Application Firewall (WAF): Deploy a WAF to monitor and block suspicious upload attempts.
- Regular Audits: Conduct regular security audits and vulnerability assessments to identify and address similar issues.
- Incident Response Plan: Have an incident response plan in place to quickly detect and respond to any potential breaches.
5. Impact on European Cybersecurity Landscape
The impact of this vulnerability on the European cybersecurity landscape is significant due to the widespread use of WordPress and its plugins. Organizations across various sectors, including government, healthcare, and finance, may be affected. The high severity of the vulnerability means that successful exploitation could lead to data breaches, financial loss, and reputational damage.
6. Technical Details for Security Professionals
- Detection: Security professionals should monitor for unusual file upload activities and suspicious network traffic. Tools like Intrusion Detection Systems (IDS) and Security Information and Event Management (SIEM) systems can help in detecting anomalies.
- Logging and Monitoring: Ensure comprehensive logging and monitoring of file upload activities. Regularly review logs for any unauthorized uploads.
- Incident Response: In case of a breach, follow the incident response plan to contain the damage, eradicate the threat, and recover the affected systems.
- User Education: Educate users about the risks of uploading files and the importance of following security best practices.
Conclusion
The vulnerability EUVD-2024-44900 in the Ajar in5 Embed plugin is critical and requires immediate attention. Organizations should prioritize patching and implementing robust security measures to protect against potential exploitation. The European cybersecurity community should collaborate to share threat intelligence and best practices to mitigate the risk posed by this vulnerability.