CVE-2018-16710 in OctoPrint
Summary
by MITRE
** DISPUTED ** OctoPrint through 1.3.9 allows remote attackers to obtain sensitive information or cause a denial of service via HTTP requests on port 8081. NOTE: the vendor disputes the significance of this report because their documentation states that with "blind port forwarding ... Putting OctoPrint onto the public internet is a terrible idea, and I really can't emphasize that enough."
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Analysis
by VulDB Data Team • 08/05/2024
The vulnerability identified as CVE-2018-16710 affects OctoPrint versions through 1.3.9 and relates to insecure exposure of HTTP services on port 8081. This issue represents a significant security concern as it allows remote attackers to access sensitive information or potentially disrupt service availability through unauthenticated HTTP requests. The affected service operates on a non-standard port typically used for OctoPrint's API and web interface, making it a potential target for exploitation. According to industry standards such as CWE-200, this vulnerability falls under information exposure, where unauthorized parties can gain access to system information that should remain protected. The security implications extend beyond simple information disclosure as the vulnerability can also enable denial of service conditions, impacting the availability of critical printing services.
The technical flaw stems from OctoPrint's default configuration that exposes its web interface and API endpoints on port 8081 without adequate authentication mechanisms or access controls. This misconfiguration creates an attack surface where remote adversaries can probe the system and potentially extract sensitive data including user credentials, print job information, device configurations, or other operational details. The vulnerability is particularly concerning because OctoPrint is commonly used in 3D printing environments where the devices often operate in networked environments without proper security boundaries. The attack vector involves simple HTTP requests that can be crafted to access various endpoints, potentially leading to unauthorized access to connected 3D printers and their operational parameters. This aligns with ATT&CK technique T1071.004 which covers application layer protocol traffic inspection and information gathering through network-based attacks.
The operational impact of this vulnerability extends beyond immediate information disclosure to encompass potential service disruption and unauthorized device control. When attackers can access the exposed port 8081, they may be able to manipulate print jobs, access device settings, or even cause denial of service conditions that could halt critical printing operations. In environments where 3D printing serves as part of manufacturing or production workflows, this vulnerability could result in significant operational disruptions and potential financial losses. The vendor's response acknowledging the disputed nature of the report does not diminish the actual security risk present in unsecured network environments, particularly when organizations fail to implement proper network segmentation or access controls. The vulnerability demonstrates the importance of following security best practices such as those outlined in NIST SP 800-44 for securing web applications and network services, emphasizing that exposing administrative interfaces directly to public networks creates unacceptable risk levels.
Mitigation strategies should focus on implementing proper network segmentation and access controls to prevent unauthorized access to the exposed port 8081. Organizations should configure firewalls to restrict access to the OctoPrint service to trusted networks only, and implement authentication mechanisms such as reverse proxies with proper access controls. The implementation of secure network practices including the use of VPNs or dedicated secure channels for accessing OctoPrint services can significantly reduce the risk. Additionally, regular security assessments and vulnerability scanning should be conducted to identify and remediate similar exposure issues in other network services. The security community should consider this vulnerability as a reminder of the critical importance of secure configuration management and the principle of least privilege, particularly for services that provide administrative access to critical infrastructure components. Organizations should also consider upgrading to newer versions of OctoPrint that may have improved security controls or implementing network monitoring to detect unauthorized access attempts to exposed services.