Siemens Simatic WinCC V7.0 SP3 Update 1 Update 2 [Update Only]
simatic wincc is a supervisory control and data acquisition (scada) system and is a major component in the siemens pcs7 scada solution. pcs7 is a distributed control system (dcs) integrating simatic wincc. tia portal is engineering software for simatic products. this software is deployed across several sectors including chemical, energy, food and agriculture, and water and wastewater systems.
simatic wincc is a supervisory control and data acquisition (scada) system and is a major component in the siemens pcs7 scada solution. tia portal is engineering software for simatic products. this software is deployed across several sectors including chemical, energy, food and agriculture, and water and wastewater systems.
but as we began looking through the siemens wincc code, we discovered that the plc has a check to see if the memory is being used by other applications. this memory has a fixed size that is 4 kb in size. if the memory is being used by another application, it will have been allocated by the operating system. this makes the memory that is under the control of the wincc application a protected memory area.
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this constant is used in all the siemens wincc packages as a pointer to the protected memory area. we could use that constant to determine the size of the memory that is being used by the wincc application.
with this new version the simple development of applications on plcs is possible. the known libraries can be used for additional development. this is possible with the known libraries like the simatic opc client, the tfpo, the wlp, the wincc libraries and the visual studio.
the same year, the heise magazine reported on how siemens simatic wincc can be hacked by using a specially crafted firmware file. the article reported that as long as users are vulnerable to the bypass of authentication when pushing a firmware update through the uart interface, a malicious firmware could compromise the wincc system.
in july 2017, the security week reported that the simatic wincc os could be hacked by a malicious firmware. the article showed that hackers could gain access to the system, modify the components, or even reverse engineer the firmware. the firmware in question was created on purpose to make the hack possible. siemens resolved the issue in ssa-437052.
in february 2018, the security week reported that cybercriminals are targeting siemens simatic wincc systems in india. the report showed that cybercriminals are targeting siemens s7 plcs with the intention to compromise the system, steal valuable data, or just trying to gain access to the system to try and find vulnerabilities.
in june 2018, the security week reported that siemens simatic wincc is suffering from multiple security vulnerabilities. the article showed that siemens s7 1200 and s7 1500 plcs are affected by a firmware vulnerability. the malware can execute arbitrary code, take screenshots, perform ddos, and initiate remote shell access. the article also noted that siemens s7 1200 and s7 1500 could be vulnerable to a number of other security issues.
in july 2018, the security week reported that siemens simatic wincc systems in the usa were targeted by cybercriminals trying to gain access to the configuration settings of the system. the article showed that hackers could easily bypass the authentication, and access the system to modify the settings.
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