The Snap7 server component in version 1.4.1, when an attacker sends a crafted packet with COTP protocol the last-data-unit flag set to No and S7 writes a var function, the Snap7 server will be crashed.Referenceshttp://snap7.comhttps://sourceforge.net/p/snap7/discussion/bugfix/thread/456d76fdde/https://sourceforge.net/projects/snap7/
