Bulletins

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.

The new firmware update for the SIMATIC S7-1500 CPU firmware fixes several vulnerabilities, which may have been exploitable via network by Web application attacks or Denial-of-Service attacks with specially crafted network packets on different ports. Siemens addresses and fixes all of these issues by the new firmware update.

A vulnerability has been identified in the integrated web server of SCALANCE X300, SCALANCE X408, and SCALANCE X414. The vulnerability could allow an attacker with network access to the device to cause a Denial-of-Service condition. The vulnerability can be triggered with publicly available tools, including vulnerability scanners. Siemens provides updates …

There are multiple vulnerabilities in the Intel Management Engine used in multiple SIMATIC IPC devices that may allow arbitrary code execution, a partial denial of service or information disclosure. For additional information see: https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00141.html. Siemens provides updates for the affected devices.

Versions of SIMATIC S7-1500, SIMATIC S7-1500 Software Controller and SIMATIC ET200SP Open Controller are affected by a denial-of-service vulnerability. An attacker with network access to the PLC can cause a Denial-of-Service condition on the network stack.

The latest updates for the affected products fix the “GHOST” [1] vulnerability identified in glibc library (CVE-2015-0235). Incorrect parsing within the glibc library functions “gethostbyname()” and “gethostbyname2()” could cause a Denial-of-Service of the targeted system. [1] https://nvd.nist.gov/vuln/detail/CVE-2015-0235

A vulnerability could allow attackers to perform a Denial-of-Service attack over the network without prior authentication against S7-300 CPUs under certain conditions. Siemens recommends specific mitigations. Siemens will update this advisory when new information becomes available.