Bulletins

Siemens has released a firmware update for the SIMATIC S7-300 CPU family which fixes a vulnerability that could allow remote attackers to perform a Denial-of-Service attack under certain conditions.

The latest update for SIMATIC Panel Software and SIMATIC WinCC (TIA Portal) fixes two vulnerabilities. The most severe is a vulnerability which could allow an attacker with network access to the integrated device to read and write variables via SNMP. Siemens recommends to update to the newest version.

Two vulnerabilities have been identified in SIEMENS LOGO!8 devices. The Session ID on the integrated webserver of LOGO!8 devices is not invalidated upon logout. The second vulnerability could allow an attacker with network access to port 10005/tcp to cause a Denial-of-Service condition by sending specifically crafted packages to the service. …

Siemens has released updates for Communication Processor (CP) module families CP 343-1/TIM 3V-IE/TIM 4R-IE/CP 443-1 to resolve an authentication bypass vulnerability that could allow unauthenticated users to perform administrative operations under certain conditions.

A potential vulnerability was discovered in the SINAMICS S/G converter family which might allow attackers to access administrative functions on the device without authentication. Siemens addresses the issue by a firmware update.

Two vulnerabilities have been identified in SIMATIC S7-300 and S7-400 CPU families. One vulnerability could lead to a Denial-of-Service, the other vulnerability could result in credential disclosure. Siemens recommends specific mitigations. Siemens will update this advisory when new information becomes available.

Siemens SIMATIC S7-1200 PLCs, version 2 and higher, allow device management over TCP port 102 (ISO-TSAP) and retrieving status information over UDP port 161 (SNMP). It is possible to cause the device to go into defect mode by sending specially crafted packets to these ports. Siemens addresses these issues with …