CVE-2021-44695
CVE-2021-44695
In short
Devices fail to properly handle specially crafted packets sent to port 102/tcp, allowing attackers to crash or disable the device. This disrupts normal operations and availability.
Technical detail
A packet processing vulnerability on port 102/tcp (S7 Communications protocol) allows remote attackers to trigger a denial of service condition. The flaw stems from improper validation of crafted packet structures, requiring network access to the vulnerable port without prior authentication.
Summary generated and translated by AI from the official description.
Affected devices don't process correctly certain special crafted packets sent to port 102/tcp, which could allow an attacker to cause a denial of service in the device.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
Affected products
Siemens · SIMATIC Drive Controller CPU 1504D TFSiemens · SIMATIC Drive Controller CPU 1507D TFSiemens · SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants)Siemens · SIMATIC S7-1200 CPU family (incl. SIPLUS variants)Siemens · SIMATIC S7-1500 CPU 1510SP-1 PNSiemens · SIMATIC S7-1500 CPU 1510SP F-1 PNSiemens · SIMATIC S7-1500 CPU 1511-1 PNSiemens · SIMATIC S7-1500 CPU 1511C-1 PNSiemens · SIMATIC S7-1500 CPU 1511F-1 PNSiemens · SIMATIC S7-1500 CPU 1511T-1 PNSiemens · SIMATIC S7-1500 CPU 1511TF-1 PNSiemens · SIMATIC S7-1500 CPU 1512C-1 PNSiemens · SIMATIC S7-1500 CPU 1512SP-1 PNSiemens · SIMATIC S7-1500 CPU 1512SP F-1 PNSiemens · SIMATIC S7-1500 CPU 1513-1 PNSiemens · SIMATIC S7-1500 CPU 1513F-1 PNSiemens · SIMATIC S7-1500 CPU 1513R-1 PNSiemens · SIMATIC S7-1500 CPU 1515-2 PNSiemens · SIMATIC S7-1500 CPU 1515F-2 PNSiemens · SIMATIC S7-1500 CPU 1515R-2 PNSiemens · SIMATIC S7-1500 CPU 1515T-2 PNSiemens · SIMATIC S7-1500 CPU 1515TF-2 PNSiemens · SIMATIC S7-1500 CPU 1516-3 PN/DPSiemens · SIMATIC S7-1500 CPU 1516F-3 PN/DPSiemens · SIMATIC S7-1500 CPU 1516T-3 PN/DPSiemens · SIMATIC S7-1500 CPU 1516TF-3 PN/DPSiemens · SIMATIC S7-1500 CPU 1517-3 PN/DPSiemens · SIMATIC S7-1500 CPU 1517F-3 PN/DPSiemens · SIMATIC S7-1500 CPU 1517H-3 PNSiemens · SIMATIC S7-1500 CPU 1517T-3 PN/DPSiemens · SIMATIC S7-1500 CPU 1517TF-3 PN/DPSiemens · SIMATIC S7-1500 CPU 1518-4 PN/DPSiemens · SIMATIC S7-1500 CPU 1518-4 PN/DP MFPSiemens · SIMATIC S7-1500 CPU 1518F-4 PN/DPSiemens · SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPSiemens · SIMATIC S7-1500 CPU 1518HF-4 PNSiemens · SIMATIC S7-1500 CPU 1518T-4 PN/DPSiemens · SIMATIC S7-1500 CPU 1518TF-4 PN/DPSiemens · SIMATIC S7-1500 CPU S7-1518-4 PN/DP ODKSiemens · SIMATIC S7-1500 CPU S7-1518F-4 PN/DP ODKSiemens · SIMATIC S7-1500 ET 200pro: CPU 1513PRO-2 PNSiemens · SIMATIC S7-1500 ET 200pro: CPU 1513PRO F-2 PNSiemens · SIMATIC S7-1500 ET 200pro: CPU 1516PRO-2 PNSiemens · SIMATIC S7-1500 ET 200pro: CPU 1516PRO F-2 PNSiemens · SIMATIC S7-1500 Software Controller V2Siemens · SIMATIC S7-PLCSIM AdvancedSiemens · SIPLUS ET 200SP CPU 1510SP-1 PNSiemens · SIPLUS ET 200SP CPU 1510SP-1 PN RAILSiemens · SIPLUS ET 200SP CPU 1510SP F-1 PNSiemens · SIPLUS ET 200SP CPU 1510SP F-1 PN RAILSiemens · SIPLUS ET 200SP CPU 1512SP-1 PNSiemens · SIPLUS ET 200SP CPU 1512SP-1 PN RAILSiemens · SIPLUS ET 200SP CPU 1512SP F-1 PNSiemens · SIPLUS ET 200SP CPU 1512SP F-1 PN RAILSiemens · SIPLUS S7-1500 CPU 1511-1 PNSiemens · SIPLUS S7-1500 CPU 1511-1 PN T1 RAILSiemens · SIPLUS S7-1500 CPU 1511-1 PN TX RAILSiemens · SIPLUS S7-1500 CPU 1511F-1 PNSiemens · SIPLUS S7-1500 CPU 1513-1 PNSiemens · SIPLUS S7-1500 CPU 1513F-1 PNSiemens · SIPLUS S7-1500 CPU 1515F-2 PNSiemens · SIPLUS S7-1500 CPU 1515F-2 PN RAILSiemens · SIPLUS S7-1500 CPU 1515F-2 PN T2 RAILSiemens · SIPLUS S7-1500 CPU 1515R-2 PNSiemens · SIPLUS S7-1500 CPU 1515R-2 PN TX RAILSiemens · SIPLUS S7-1500 CPU 1516-3 PN/DPSiemens · SIPLUS S7-1500 CPU 1516-3 PN/DP RAILSiemens · SIPLUS S7-1500 CPU 1516-3 PN/DP TX RAILSiemens · SIPLUS S7-1500 CPU 1516F-3 PN/DPSiemens · SIPLUS S7-1500 CPU 1516F-3 PN/DP RAILSiemens · SIPLUS S7-1500 CPU 1517H-3 PNSiemens · SIPLUS S7-1500 CPU 1518-4 PN/DPSiemens · SIPLUS S7-1500 CPU 1518-4 PN/DP MFPSiemens · SIPLUS S7-1500 CPU 1518F-4 PN/DPSiemens · SIPLUS S7-1500 CPU 1518HF-4 PNSiemens · SIPLUS TIM 1531 IRCSiemens · TIM 1531 IRCWant to know if your infrastructure is exposed to this?
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