Siemens SIMATIC HMI MiniWeb Default Login Scanner

Siemens SIMATIC HMI MiniWeb is a product used in industrial environments for remotely monitoring and controlling Human-Machine Interface (HMI) panels. These interfaces are crucial for ensuring the smooth operation of industrial systems and are widely used in operational technology (OT) systems. By providing a web-based platform, it allows operators to access and manage relevant system information efficiently. The software is designed to enhance productivity and ensure seamless communication between different parts of the industrial setup. It is a critical component in the management of industrial processes, making security measures paramount. Installation and maintenance of the product are usually performed by IT and OT professionals specialized in industrial technology.

The vulnerability detected by this scanner is the use of default login credentials in Siemens SIMATIC HMI MiniWeb. Such vulnerabilities can lead to unauthorized access, meaning that an attacker could potentially gain control over the HMI panels. This can result in significant security threats within an industrial setting, where maintaining the integrity of control systems is critical. The scanner identifies whether default credentials are left enabled, a common security misconfiguration that can expose systems to malicious actors. Detecting such vulnerabilities allows operators to promptly update their security configurations and protect their systems from potential intrusions. The use of default login credentials is a known method attackers exploit to compromise system integrity.

In technical terms, the vulnerability focuses on the failure to change default credentials in Siemens SIMATIC HMI MiniWeb interfaces. The POST request to "/FormLogin" with default credentials like "Administrator" and a password attempts authentication. Successful matching conditions in the response, such as 'siemens_ad_session=' and 'Auth Form Response', along with a 200 HTTP status code, indicate a successful login using default credentials. This accessibility poses a threat, allowing unauthorized users to access sensitive controls within the industrial environment. The scanner utilizes these indicators to detect the presence of default credentials and report them for necessary action.

When this vulnerability is exploited, the effects can be detrimental to industrial operations. Unauthorized access via default credentials could allow attackers to manipulate HMI interfaces, potentially altering system settings and disrupting industrial processes. This could lead to production downtime, safety hazards, or even damage to the infrastructure. Moreover, it may expose sensitive operational data, enabling attackers to gain insights into a company's critical operations. The consequences of such an exploitation could be both financial and reputational, affecting not only the company but also its clients and stakeholders.