CVE-2008-7173 in Internet Connectivity Kit
Summary
by MITRE
The Jura Internet Connection Kit for the Jura Impressa F90 coffee maker does not properly restrict access to privileged functions, which allows remote attackers to cause a denial of service (physical damage), modify coffee settings, and possibly execute code via a crafted request. NOTE: this issue is being included in CVE because the denial of service may include financial loss or water damage.
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Analysis
by VulDB Data Team • 12/26/2017
The CVE-2008-7173 vulnerability represents a critical security flaw in the Jura Internet Connection Kit for the Jura Impressa F90 coffee maker, demonstrating how connected IoT devices can pose significant risks beyond traditional computing environments. This vulnerability specifically targets the network interface of a high-end commercial coffee machine, exposing it to unauthorized remote access that could result in physical damage, financial loss, and potential code execution. The flaw exists within the device's web-based management interface, which fails to implement proper authentication and authorization mechanisms for accessing privileged functions. This represents a fundamental breakdown in the security architecture of what should be a simple household appliance, but due to its internet connectivity and network capabilities, it becomes a potential entry point for malicious actors.
The technical implementation of this vulnerability stems from improper access control mechanisms within the Jura Impressa F90's web interface, which operates on a standard HTTP protocol without adequate security measures. Attackers can exploit this weakness by crafting specially designed HTTP requests that bypass normal access controls and gain unauthorized access to the device's privileged functions. This flaw aligns with CWE-284, which describes improper access control vulnerabilities where systems fail to properly enforce access restrictions. The vulnerability allows attackers to manipulate the coffee maker's internal settings, potentially causing physical damage to the machine's internal components, including heating elements and water pumps, which could result in expensive repairs or complete device failure. The security implications extend beyond simple inconvenience, as the device's ability to control water flow and heating mechanisms means that malicious manipulation could lead to flooding or other physical damage to surrounding property.
The operational impact of CVE-2008-7173 is particularly concerning given that the affected device operates in commercial environments where coffee makers are critical infrastructure components. When attackers can remotely access and manipulate the device, they can cause denial of service conditions that disrupt business operations, potentially leading to significant financial losses due to machine downtime and repair costs. The vulnerability also raises concerns about data privacy, as the device may collect and transmit information about usage patterns and potentially sensitive business data. The potential for code execution represents a severe risk that could allow attackers to install malicious software on the device, potentially using it as a pivot point for accessing other networked systems within the organization. This vulnerability directly aligns with ATT&CK technique T1210, which describes exploitation of remote services, and T1071.005, which covers application layer protocol usage for command and control communications.
Mitigation strategies for CVE-2008-7173 should focus on implementing proper network segmentation and access controls to prevent unauthorized access to the device. Organizations should ensure that the coffee maker operates on a separate network segment with minimal access privileges, and that any network access is properly authenticated and authorized. The device should be configured to use strong authentication mechanisms, including complex passwords and potentially multi-factor authentication where supported. Network monitoring should be implemented to detect unusual access patterns or unauthorized modifications to the device's configuration settings. Additionally, regular firmware updates should be applied to address known vulnerabilities, although in this specific case, the vulnerability is particularly concerning as it affects a device that may no longer receive security updates. The broader implications of this vulnerability highlight the need for manufacturers to implement robust security measures in all connected devices, regardless of their intended function, as these devices often become part of larger network infrastructures and can serve as entry points for more extensive attacks. Organizations should also consider implementing network access control policies that prevent devices from accessing unnecessary network resources, and ensure that any device with internet connectivity has proper security configurations in place to prevent unauthorized access.