Death-msg kick exploit
The death-msg exploit was the first significant kick-exploit developed and used on the server in 2017.
History
The exploit was discovered in late 2017 by the player 123fly123, when he developed a mod that could extend book titles and color them. He discovered the exploit when he killed one of his alternate accounts while holding a shulker-box filled with the edited books. Since shulker-preview could be displayed in chat, death messages from kills using the books generated chat messages that overloaded most player’s clients, kicking them from the server. Multiple players doing the exploit at once even led to the server shutting down. When players realized they could bypass the exploit by disabling chat, 123fly123 contacted Mojang about the exploit, after which it was patched in future versions. Since 2b2t stayed on 1.12.2, the admin had to disable death-messages for a few months to keep the server running, until Spigot eventually fixed it.<ref>- fastvincent1 - 2b2t - History of Kick Exploits (November 23rd 2019)</ref><ref>123fly123 - Minecraft Multiplayer Kick Exploit (1.12/1.12.1/1.12.2/1.13) (July 24th 2018)</ref>
References
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