Siemens » Simatic S7-300 Firmware : Security Vulnerabilities, CVEs,

The webserver of the affected devices contains a vulnerability that may lead to a denial of service condition. An attacker may cause a denial of service situation which leads to a restart of the webserver of the affected device. The security vulnerability could be exploited by an attacker with network access to the affected systems. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise availability of the device.

A vulnerability has been identified in SIMATIC S7-300 CPUs (All versions < V3.X.16). The affected CPUs improperly validate S7 communication packets which could cause a Denial-of-Service condition of the CPU. The CPU will remain in DEFECT mode until manual restart. Successful exploitation requires an attacker to be able to send a specially crafted S7 communication packet to a communication interface of the CPU. This includes Ethernet, PROFIBUS, and Multi Point Interfaces (MPI). No user interaction or privileges are required to exploit the security vulnerability. The vulnerability could allow causing a Denial-of-Service condition of the core functionality of the CPU, compromising the availability of the system. At the time of advisory publication no public exploitation of this security vulnerability was known. Siemens confirms the security vulnerability and provides mitigations to resolve the security issue.

A vulnerability has been identified in SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC CP 343-1 (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 Advanced (incl. SIPLUS variants) (All versions), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 Advanced (All versions < V3.3), SIMATIC ET 200pro IM154-8 PN/DP CPU (All versions < V3.2.16), SIMATIC ET 200pro IM154-8F PN/DP CPU (All versions < V3.2.16), SIMATIC ET 200pro IM154-8FX PN/DP CPU (All versions < V3.2.16), SIMATIC ET 200S IM151-8 PN/DP CPU (All versions < V3.2.16), SIMATIC ET 200S IM151-8F PN/DP CPU (All versions < V3.2.16), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V1.7.0), SIMATIC S7-1500 Software Controller (All versions < V1.7.0), SIMATIC S7-300 CPU 314C-2 PN/DP (All versions < V3.3.16), SIMATIC S7-300 CPU 315-2 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 315F-2 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 315T-3 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 317-2 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 317F-2 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 317T-3 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 317TF-3 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 319-3 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 319F-3 PN/DP (All versions < V3.2.16), SIMATIC S7-400 CPU 412-2 PN V7 (All versions < V7.0.3), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.9), SIMATIC S7-400 PN/DP V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.7), SIMATIC S7-410 CPU family (incl. SIPLUS variants) (All versions < V8.1), SIMATIC WinAC RTX 2010 (All versions < V2010 SP3), SIMATIC WinAC RTX F 2010 (All versions < V2010 SP3), SINUMERIK 828D (All versions < V4.7 SP6 HF1), SIPLUS ET 200S IM151-8 PN/DP CPU (All versions < V3.2.16), SIPLUS ET 200S IM151-8F PN/DP CPU (All versions < V3.2.16), SIPLUS NET CP 443-1 (All versions < V3.3), SIPLUS NET CP 443-1 Advanced (All versions < V3.3), SIPLUS S7-300 CPU 314C-2 PN/DP (All versions < V3.3.16), SIPLUS S7-300 CPU 315-2 PN/DP (All versions < V3.2.16), SIPLUS S7-300 CPU 315F-2 PN/DP (All versions < V3.2.16), SIPLUS S7-300 CPU 317-2 PN/DP (All versions < V3.2.16), SIPLUS S7-300 CPU 317F-2 PN/DP (All versions < V3.2.16), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), Softnet PROFINET IO for PC-based Windows systems (All versions). Responding to a PROFINET DCP request with a specially crafted PROFINET DCP packet could cause a denial of service condition of the requesting system. The security vulnerability could be exploited by an attacker located on the same Ethernet segment (OSI Layer 2) as the targeted device. A manual restart is required to recover the system.

A vulnerability has been identified in Development/Evaluation Kits for PROFINET IO: DK Standard Ethernet Controller, Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200, Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200P, SIMATIC Compact Field Unit, SIMATIC ET200AL, SIMATIC ET200M (incl. SIPLUS variants), SIMATIC ET200MP IM155-5 PN BA (incl. SIPLUS variants), SIMATIC ET200MP IM155-5 PN HF (incl. SIPLUS variants), SIMATIC ET200MP IM155-5 PN ST (incl. SIPLUS variants), SIMATIC ET200S (incl. SIPLUS variants), SIMATIC ET200SP IM155-6 PN BA (incl. SIPLUS variants), SIMATIC ET200SP IM155-6 PN HA (incl. SIPLUS variants), SIMATIC ET200SP IM155-6 PN HF (incl. SIPLUS variants), SIMATIC ET200SP IM155-6 PN HS (incl. SIPLUS variants), SIMATIC ET200SP IM155-6 PN ST (incl. SIPLUS variants), SIMATIC ET200ecoPN, 16DI, DC24V, 8xM12, SIMATIC ET200ecoPN, 16DO DC24V/1,3A, 8xM12, SIMATIC ET200ecoPN, 4AO U/I 4xM12, SIMATIC ET200ecoPN, 8 DIO, DC24V/1,3A, 8xM12, SIMATIC ET200ecoPN, 8 DO, DC24V/2A, 8xM12, SIMATIC ET200ecoPN, 8AI RTD/TC 8xM12, SIMATIC ET200ecoPN, 8AI; 4 U/I; 4 RTD/TC 8xM12, SIMATIC ET200ecoPN, 8DI, DC24V, 4xM12, SIMATIC ET200ecoPN, 8DI, DC24V, 8xM12, SIMATIC ET200ecoPN, 8DO, DC24V/0,5A, 4xM12, SIMATIC ET200ecoPN, 8DO, DC24V/1,3A, 4xM12, SIMATIC ET200ecoPN, 8DO, DC24V/1,3A, 8xM12, SIMATIC ET200ecoPN: IO-Link Master, SIMATIC ET200pro, SIMATIC PN/PN Coupler (incl. SIPLUS NET variants), SIMATIC S7-1200 CPU family (incl. SIPLUS variants), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants), SIMATIC S7-1500 Software Controller, SIMATIC S7-200 SMART, SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants), SIMATIC S7-400 H V6 CPU family and below (incl. SIPLUS variants), SIMATIC S7-400 PN/DP V6 CPU family and below (incl. SIPLUS variants), SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants), SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants), SIMATIC TDC CP51M1, SIMATIC TDC CPU555, SIMATIC WinAC RTX (F) 2010, SIMOCODE pro V EIP (incl. SIPLUS variants), SIMOCODE pro V PN (incl. SIPLUS variants), SIMOTION C, SIMOTION D (incl. SIPLUS variants), SIMOTION D4xx V4.4 for SINAMICS SM150i-2 w. PROFINET (incl. SIPLUS variants), SIMOTION P V4.4 and V4.5, SIMOTION P V5, SINAMICS DCM w. PN, SINAMICS DCP w. PN, SINAMICS G110M w. PN, SINAMICS G120(C/P/D) w. PN (incl. SIPLUS variants), SINAMICS G130 V4.7 w. PN, SINAMICS G130 V4.8 w. PN, SINAMICS G150 V4.7 w. PN, SINAMICS G150 V4.8 w. PN, SINAMICS GH150 V4.7 w. PROFINET, SINAMICS GL150 V4.7 w. PROFINET, SINAMICS GM150 V4.7 w. PROFINET, SINAMICS S110 w. PN, SINAMICS S120 V4.7 SP1 w. PN (incl. SIPLUS variants), SINAMICS S120 V4.7 w. PN (incl. SIPLUS variants), SINAMICS S120 V4.8 w. PN (incl. SIPLUS variants), SINAMICS S120 prior to V4.7 w. PN (incl. SIPLUS variants), SINAMICS S150 V4.7 w. PN, SINAMICS S150 V4.8 w. PN, SINAMICS SL150 V4.7.0 w. PROFINET, SINAMICS SL150 V4.7.4 w. PROFINET, SINAMICS SL150 V4.7.5 w. PROFINET, SINAMICS SM120 V4.7 w. PROFINET, SINAMICS V90 w. PN, SINUMERIK 840D sl, SIRIUS Soft Starter 3RW44 PN. Specially crafted packets sent to port 161/udp could cause a Denial-of-Service condition. The affected devices must be restarted manually.

Specially crafted PROFINET DCP packets sent on a local Ethernet segment (Layer 2) to an affected product could cause a denial of service condition of that product. Human interaction is required to recover the system. PROFIBUS interfaces are not affected. This vulnerability affects only SIMATIC HMI Multi Panels and HMI Mobile Panels, and S7-300/S7-400 devices.

Specially crafted PROFINET DCP broadcast packets could cause a denial of service condition of affected products on a local Ethernet segment (Layer 2). Human interaction is required to recover the systems. PROFIBUS interfaces are not affected.