Explain the vulnerability: CVE-2017-12741
Description: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.