CVE-2022-2872 in octoprint
Summary
by MITRE • 09/21/2022
Unrestricted Upload of File with Dangerous Type in GitHub repository octoprint/octoprint prior to 1.8.3.
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Analysis
by VulDB Data Team • 10/21/2022
The vulnerability identified as CVE-2022-2872 represents a critical security flaw in the OctoPrint 3D printer control software that affected versions prior to 1.8.3. This issue resides in the GitHub repository octoprint/octoprint and constitutes a dangerous file upload vulnerability that allows attackers to bypass security restrictions and upload malicious files to the system. The vulnerability stems from insufficient validation of file types during the upload process, creating an unrestricted file upload condition that can be exploited by malicious actors to gain unauthorized access to the 3D printer control system. The flaw enables attackers to upload files with potentially dangerous extensions that could execute arbitrary code on the target system, making it a significant threat to the security of 3D printing environments.
This vulnerability directly maps to CWE-434, which describes unrestricted upload of file with dangerous type, a well-documented weakness in software security that occurs when applications allow users to upload files without proper validation of their content or type. The technical implementation flaw involves the absence of robust file type checking mechanisms within the OctoPrint application's file upload handlers. Attackers can exploit this by uploading malicious files such as scripts or executables that the system will process as legitimate files, potentially leading to remote code execution or system compromise. The vulnerability's impact is particularly severe in 3D printing environments where the OctoPrint software typically runs on embedded systems or dedicated hardware that may have limited security controls and direct access to printer mechanisms.
The operational impact of CVE-2022-2872 extends beyond simple unauthorized file uploads, as it creates a potential pathway for attackers to gain persistent access to 3D printing infrastructure and potentially compromise the entire printing ecosystem. Organizations using OctoPrint for industrial or commercial 3D printing operations face significant risks including unauthorized access to sensitive design files, potential disruption of printing operations, and possible physical security breaches through manipulation of printer controls. The vulnerability could be exploited to upload backdoor files that maintain access to the system, or malicious firmware that could compromise the printer hardware itself. This type of vulnerability is particularly concerning in environments where 3D printers are connected to networks and used for producing critical components, as the attack surface could extend to supply chain security and intellectual property protection.
Mitigation strategies for this vulnerability require immediate implementation of software updates to version 1.8.3 or later, which contains the necessary fixes for the unrestricted file upload issue. Organizations should also implement additional security measures including network segmentation to isolate 3D printing environments from critical infrastructure, implementing strict file type validation at multiple layers of the application architecture, and conducting regular security audits of uploaded files. The remediation process should involve thorough testing of the updated software to ensure that the fix properly addresses the vulnerability without introducing regressions in functionality. Security teams should also consider implementing intrusion detection systems that monitor for unusual file upload patterns and establish secure file handling procedures that align with industry best practices for embedded systems security. Organizations using older versions of OctoPrint should also consider temporary network-level restrictions on upload capabilities until proper updates can be deployed across their infrastructure.