Description
A Path Traversal vulnerability in the Allsky WebUI version v2024.12.06_06 allows an unauthenticated remote attacker to achieve arbitrary command execution. By sending a crafted HTTP request to the /html/execute.php endpoint with a malicious payload in the id parameter, an attacker can execute arbitrary commands on the underlying operating system, leading to full remote code execution (RCE).
EPSS Score:
0%
Comprehensive Technical Analysis of EUVD-2025-203804
1. Vulnerability Assessment and Severity Evaluation
The vulnerability described in EUVD-2025-203804 is a Path Traversal vulnerability in the Allsky WebUI version v2024.12.06_06. This vulnerability allows an unauthenticated remote attacker to achieve arbitrary command execution by sending a crafted HTTP request to the /html/execute.php endpoint with a malicious payload in the id parameter. The severity of this vulnerability is critical, as indicated by its CVSS Base Score of 10.0.
CVSS Vector Breakdown:
- AV:N (Network Vector): The vulnerability is exploitable over the network.
- AC:L (Low Complexity): The attack requires low skill or resources.
- PR:N (No Privileges Required): No authentication is needed to exploit the vulnerability.
- UI:N (No User Interaction): No user interaction is required.
- S:C (Changed Scope): The vulnerability can affect resources beyond the security scope managed by the security authority.
- C:H (High Confidentiality Impact): Complete loss of confidentiality.
- I:H (High Integrity Impact): Complete loss of integrity.
- A:H (High Availability Impact): Complete loss of availability.
2. Potential Attack Vectors and Exploitation Methods
Attack Vectors:
- Unauthenticated Remote Access: An attacker can exploit this vulnerability without needing any credentials.
- Crafted HTTP Requests: The attacker sends a specially crafted HTTP request to the
/html/execute.phpendpoint with a malicious payload in theidparameter.
Exploitation Methods:
- Command Injection: The attacker can inject arbitrary commands into the
idparameter, which are then executed by the underlying operating system. - Path Traversal: The attacker can manipulate the file path to access and execute files outside the intended directory, potentially leading to full system compromise.
3. Affected Systems and Software Versions
Affected Systems:
- Allsky WebUI version v2024.12.06_06
Potentially Affected Systems:
- Any system running the Allsky WebUI software version v2024.12.06_06 or earlier versions that have not been patched for this vulnerability.
4. Recommended Mitigation Strategies
Immediate Actions:
- Patch Management: Apply the latest security patches provided by the vendor.
- Access Control: Implement strict access controls to limit exposure to the vulnerable endpoint.
- Network Segmentation: Segregate the vulnerable system from critical networks to minimize potential impact.
Long-Term Strategies:
- Regular Audits: Conduct regular security audits and vulnerability assessments.
- Intrusion Detection: Deploy intrusion detection systems (IDS) to monitor for suspicious activities.
- User Education: Educate users on the importance of not exposing sensitive endpoints to untrusted networks.
5. Impact on European Cybersecurity Landscape
The critical nature of this vulnerability poses a significant risk to organizations using the Allsky WebUI software within the European Union. Unpatched systems can be exploited to gain full control over the underlying operating system, leading to data breaches, system compromises, and potential disruptions in critical services. This underscores the importance of timely patching and robust cybersecurity practices to protect against such threats.
6. Technical Details for Security Professionals
Vulnerability Details:
- Endpoint:
/html/execute.php - Parameter:
id - Exploit Method: Crafted HTTP request with a malicious payload in the
idparameter.
Example Exploit Payload:
GET /html/execute.php?id=../../../../../../etc/passwd HTTP/1.1
Host: vulnerable-server.com
Detection and Monitoring:
- Log Analysis: Monitor web server logs for unusual access patterns to the
/html/execute.phpendpoint. - Anomaly Detection: Implement anomaly detection mechanisms to identify and alert on suspicious activities.
Incident Response:
- Containment: Isolate affected systems to prevent further spread.
- Eradication: Remove the vulnerability by applying patches and ensuring no malicious code remains.
- Recovery: Restore systems to a known good state and verify integrity.
References:
By addressing this vulnerability promptly and implementing robust security measures, organizations can significantly reduce the risk of exploitation and protect their systems from potential cyber threats.