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SIPLUS variants) (All versions = V20.8), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions = V4.4.0), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions = V2.8.1), SIMATIC S7-1500 Software Controller (All versions = V20.8), SIMATIC S7-PLCSIM Advanced (All versions = V3.0). An attacker with network access to port 102\u002Ftcp could potentially modify the user program on the PLC in a way that the running code is different from the source code which is stored on the device. An attacker must have network access to affected devices and must be able to perform changes to the user program. The vulnerability could impact the perceived integrity of the user program stored on the CPU. An engineer that tries to obtain the code of the user program running on the device, can receive different source code that is not actually running on the device.","A vulnerability has been identified in SIMATIC Drive Controller family (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. 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The lack of checksum functionality in a protocol removes the first application-level check of data that can be used. The end-to-end philosophy of checks states that integrity checks should be performed at the lowest level that they can be completely implemented. Excluding further sanity checks and input validation performed by applications, the protocol's checksum is the most important level of checksum, since it can be performed more completely than at any previous level and takes into account entire messages, as opposed to single packets.","Base",2,false,[],{"title":139,"metaDescription":140,"keywords":141,"canonicalUrl":142,"structuredData":143},"What is CVE-2019-10943? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2019-10943, a high severity cyber security vulnerability from 2019. 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