OctoPrint 1.11.2 Vulnerable to Unauthenticated File Upload Exploit (CVE Pending)
Security researchers disclose an unauthenticated file upload flaw in OctoPrint 1.11.2, enabling remote code execution. Patch pending as CVE assignment underway.
Unauthenticated File Upload Flaw Discovered in OctoPrint 1.11.2
Security researchers have identified a critical vulnerability in OctoPrint 1.11.2, an open-source web interface for 3D printers, that allows unauthenticated attackers to upload malicious files to vulnerable systems. The exploit, published on Exploit Database (EDB-ID: 52476), could lead to remote code execution (RCE) if successfully exploited.
Technical Details
The vulnerability stems from improper access controls in OctoPrint’s file upload functionality. Specifically:
- Affected Version: OctoPrint 1.11.2 (and potentially earlier versions)
- Attack Vector: Unauthenticated HTTP POST requests to the file upload endpoint
- Impact: Arbitrary file upload, potentially enabling RCE via crafted payloads
- Exploit Availability: Proof-of-concept (PoC) code is publicly available on Exploit Database
At the time of disclosure, no CVE ID has been assigned, but the maintainers are reportedly working on a patch. The flaw was published on Exploit Database without prior coordination with the OctoPrint development team, raising concerns about potential in-the-wild exploitation.
Impact Analysis
OctoPrint is widely used in both home and industrial 3D printing environments, often exposed to local networks or the internet for remote management. A successful exploit could allow attackers to:
- Execute arbitrary code on the host system
- Gain control over connected 3D printers
- Pivot to other networked devices
- Deploy ransomware or other malware
Given the public availability of PoC code, organizations and individuals using OctoPrint 1.11.2 are at heightened risk of targeted attacks.
Recommendations
Security teams and OctoPrint users should take immediate action:
- Restrict Network Access: Limit OctoPrint’s exposure to trusted networks only. Avoid direct internet access.
- Disable File Uploads: If possible, disable the file upload feature until a patch is released.
- Monitor for Exploitation: Review logs for unusual file upload activity or unauthorized access attempts.
- Apply Updates: Once a patch is available, upgrade to the latest version immediately.
- Segment Networks: Isolate 3D printers and OctoPrint instances from critical systems using network segmentation.
The OctoPrint team has not yet issued an official advisory, but users are advised to monitor the project’s GitHub repository for updates. A CVE assignment is expected in the coming days.
Original Exploit Details: Exploit Database (EDB-ID: 52476)