Bulletins

The latest updates for the affected products fix three vulnerabilities. The most severe of these vulnerabilities could allow an attacker to perform a Denial-of-Service attack against HMI panels under certain conditions.

Security researchers published information on vulnerabilities known as Spectre-NG (Variants 3a and 4). These vulnerabilities affect many modern processors from different vendors to a varying degree. Several Industrial Products include affected processors and are affected by the vulnerabilities.

Several SIMATIC IPCs include a version of Infineon's Trusted Platform Module (TPM) firmware that mishandles RSA key generation. This makes it easier for attackers to conduct cryptographic attacks against the key material. Siemens has released updates for the affected Industrial PCs.

Siemens SIMATIC S7-1200 CPUs, version 2 and higher, are capable of running an embedded web server. Web server functionality is disabled by default in the 1200 project configuration. However, if enabled, the web server is susceptible to Cross-Site Scripting (XSS). Siemens provides a firmware update which fixes this XSS vulnerability.

Intel has identified vulnerabilities in Intel Management Engine (ME), Intel Server Platform Services (SPS), and Intel Trusted Execution Engine (TXE). As several Siemens Industrial PCs use Intel technology, they are also affected. Siemens has released updates for the affected Industrial PCs.

The latest product release of the SIMATIC S7-1200 CPU fixes two vulnerabilities. The more severe of these vulnerabilities could allow an attacker to inject HTTP headers if unsuspecting users are tricked to click on a malicious link. Another vulnerability resolved in this product release is discussed below.