Denial of Service vulnerability in PROFINET IO Device
Hilscher PROFINET IO Device prior V188.8.131.52
A Denial of Service vulnerability in Hilscher PROFINET IO Device V3 based solutions may lead to unexpected loss of cyclic communication or interruption of acyclic communication.
When handling Read Implicit Request services, depending on the content of the request, the Hilscher PROFINET IO Device V3 protocol stack does not properly limit available resources. This may lead to shortage of resources which in the end may lead to described ímpact.
There is no workaround. However, using cell protection mechanisms and ensuring that no untrusted entity is connected to the network may reduce the risk of occurrence.
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