Wireshark · Wireshark-users: Re: [Wireshark-users
Malformed Login Packet - Community Led Technical Support Aug 29, 2019 Defense Against Malformed Packet Attacks - S1720, S2700 Apr 23, 2020 How To Perform Ping of Death Attack Using CMD And Notepad Short Bytes: A ping packet can also be malformed to perform denial of service attack by sending continuous ping packets to the target IP address. A continuous ping will cause buffer overflow at Protocols/malformed - The Wireshark Wiki
In this type, instead of a standard ICMP ping packet, a malformed ping packet is created with more than 65,535 bytes, which is the maximum allowed in a packet. This results in the destination system responding with an echo reply, which also consumes a larger packet frame and thus eventually results in a denial of service attack.
The malformed packets aren't LWAPP but seen in IEEE's association request packet.These messages aren't bad. All it is is that Ethereal could not fully decode the content of the packet because there wasn't enough information in it to decode.As these messages are sent from wireless clients to AP, as long as the clients are able to associate, shouldn't be a concern.
Wireshark: Re: malformed packet (exception occurred)
Note: a malformed packet now-and-then is to be expected, as this is radio-communication and the sniffer is a passive eavesdropping device. Cheers, Håkon Cancel Cyber Attacks Explained: Packet Crafting - open source for you