May 11, 2012
Since Wireshark is saying that this is TDS protocol it (Wireshark) is trying to decode the packet as if it were TDS. If you are not really using TDS protocol, then Wireshark will show that the packet is malformed when it is not. Wireshark determines the protocol based on the TCP/UDP port being used. A definition of the term "Malformed Packet Attack" used in relation to computer security is presented. It refers to any attack that utilizes nonstandard packets to cause denial of service. Malformed packet attacks generally exploit errors in the Transmission Control Protocol/Internet Protocol (TCP/IP) stack of the victim system by sending Malformed package errors can come up when you connect to something which is not a MySQL server. Another possible problem could be network related (lost packages and the like). Try the command line client and see how that works. The malformed packet appears to contain a valid radiotap header with legitimate data, but it is prefixed with other data (possibly suggesting some sort of buffer overflow). You can see in "bad.png" that there's a broadcast frame very similar to the one in "good.png", but it's 8 bytes in.
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.
SQL Server - Client Connection Issues - Malformed Packet May 11, 2012
The point is not that I get malformed packages in Wireshark, the point is that I can't wake up my PC with the the pfSense WOL feature. It works with (almost) every random WOL app on my phone, tablet and laptop (which obviously sends some different kind of package than pfSense does).
Dec 19, 2011 tcp - Malformed DNS Request Packet - Stack Overflow I've been working on a project which involves sending DNS requests with information (not actual domains) in the questions (2 of them). I've been tracking the packets with wireshark.. Here is the tcp dump of the packet created.. 00000000 00 02 01 00 00 02 00 00 00 00 00 00 01 32 03 65