PaperMC / PaperMC/Waterfall

Further DoS fixes needed

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help wanted
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Description

Hello there.

The recent DoS fixes did not really do much (at least in my case). I have a sample of the java application used for sending attacks. For security reasons, I uploaded it here with a password. A developer/staff member can request me to remove the password should you wish for everyone to be able to grab this tool. Otherwise, you can contact me on Discord (OpenSource#2021) to get the file password.

Launch attack command: java -jar jarname.jar host=127.0.0.1 port=25577 proxiesFile=socks4.txt threads=10000 attackTime=320 exploit=utf16_join (it's important to keep exploit method utf16_join, all else is optional).

I hope there is something more you can do about it. This tool is able to overload any network, no matter the Bot/DDoS protection being used.

Thanks!

Contributor guide

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First steps

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Research direction

No source file or test is named. Start by reviewing the recent DoS fixes and the reported utf16_join reproduction, then determine whether the behavior is addressed and document a validated mitigation or the remaining limitation.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
networking, security
Issue type
Bug
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

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