CVE-2017-1000230

Name of the Vulnerable Software and Affected Versions Snap7 Server version 1.4.1

Description The issue allows for a denial of service attack when the ItemCount field of the ReadVar or WriteVar functions in the S7 protocol implementation is provided with unexpected input, causing the Snap7 Server to crash.

Recommendations For Snap7 Server version 1.4.1, as a temporary workaround, consider restricting access to the ReadVar and WriteVar functions until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.