Malformed packets
Maliciously malformed packets take advantage of vulnerabilities in operating systems and applications by intentionally altering the content of data fields in network protocols. These vulnerabilities may include causing a system crash (a form of denial of service) or forcing the system to execute the arbitrary code.
An example of malformed packet vulnerability is Cisco Security Advisory cisco-sa-20140611-ipv6, wherein vulnerability in parsing malformed IPv6 packets in a certain series of routers could cause a reload (reboot) of a certain card that carries network traffic, which could intermittently cause service outages.
Another example of this kind of vulnerability is in some unpatched Windows or Linux systems that will crash if ...
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