Problem with SpamQuit hack

Discussion in 'Bukkit Help' started by Koreaver, Dec 23, 2011.

Thread Status:
Not open for further replies.
  1. Offline

    Koreaver

    If anyone has a solution or can make one for this "spamquit" hack, (the one where it shows you logging off ALOT) Please reply to this. Also this is the error it sends hundreds of times.
    2011-12-24 00:10:19 [WARNING] class net.minecraft.server.NetServerHandler wasn't prepared to deal with a class net.minecraft.server.Packet254GetInfo
    2011-12-24 00:10:19 [WARNING] class net.minecraft.server.NetServerHandler wasn't prepared to deal with a class net.minecraft.server.Packet254GetInfo
    2011-12-24 00:10:19 [WARNING] class net.minecraft.server.NetServerHandler wasn't prepared to deal with a class net.minecraft.server.Packet254GetInfo
    2011-12-24 00:10:19 [WARNING] class net.minecraft.server.NetServerHandler wasn't prepared to deal with a class net.minecraft.server.Packet254GetInfo
    2011-12-24 00:10:19 [WARNING] class net.minecraft.server.NetServerHandler wasn't prepared to deal with a class net.minecraft.server.Packet254GetInfo
    2011-12-24 00:10:19 [WARNING] class net.minecraft.server.NetServerHandler wasn't prepared to deal with a class net.minecraft.server.Packet254GetInfo
    2011-12-24 00:10:19 [WARNING] class net.minecraft.server.NetServerHandler wasn't prepared to deal with a class net.minecraft.server.Packet254GetInfo
    Please help its plaguing our server T.T
     
  2. Offline

    Nathan C

    Use MCBans?

    It has connection throttling, to prevent quit and join spamming.
     
  3. Offline

    Drift_91

    I also had this problem, was the packet sent by a player named theseventhchaos ?

    Here's a pastebin: http://pastebin.com/5x8Q2WnW

    Nathan, it's not a normal login then log out spam. The person's client spams the packet over 100 times a second. The guy who did it to my server claims he didn't intend to, but I suspect he was using a hacked client.

    Anyone have any insight as to whether this is a glitch or a hacking attempt? The guy's appealing the ban on MCBans and I need to know whether he did it on purpose or not.



    Edit: forgot to mention that this crashes the server.
     
  4. Offline

    kookiekrak

    Apparently this isn't a spamquit hack.

    It's spamming the getinfo packet that shows a server's playercount etc
     
  5. Offline

    Gravity

    I'm having this issue on my server too.. heres my post that I also made here

    Supplying a bit more information on this, we've had a problem plaguing my server for weeks with this kind of exploit, and as far as I can tell its something that only mojang can fix.
    Basically, this kid logs into the server using a VPN and a stolen account, and uses the exploit, resulting in this happening in-game:
    [​IMG]
    The stopping the server was me in console stopping it and restarting, because this is what happens:
    Code:
    2011-12-27 18:37:06 [WARNING] class net.minecraft.server.NetServerHandler wasn't prepared to deal with a class net.minecraft.server.Packet254GetInfo
    2011-12-27 18:37:06 [WARNING] class net.minecraft.server.NetServerHandler wasn't prepared to deal with a class net.minecraft.server.Packet254GetInfo
    2011-12-27 18:37:06 [WARNING] class net.minecraft.server.NetServerHandler wasn't prepared to deal with a class net.minecraft.server.Packet254GetInfo
    2011-12-27 18:37:06 [WARNING] class net.minecraft.server.NetServerHandler wasn't prepared to deal with a class net.minecraft.server.Packet254GetInfo
    2011-12-27 18:37:06 [WARNING] class net.minecraft.server.NetServerHandler wasn't prepared to deal with a class net.minecraft.server.Packet254GetInfo
    2011-12-27 18:37:06 [SEVERE] java.lang.OutOfMemoryError: unable to create new native thread
    2011-12-27 18:37:06 [SEVERE]    at java.lang.Thread.start0(Native Method)
    2011-12-27 18:37:06 [SEVERE]    at java.lang.Thread.start(Thread.java:614)
    2011-12-27 18:37:06 [SEVERE]    at net.minecraft.server.NetworkManager.d(NetworkManager.java:243)
    2011-12-27 18:37:06 [SEVERE]    at net.minecraft.server.NetServerHandler.disconnect(NetServerHandler.java:119)
    2011-12-27 18:37:06 [SEVERE]    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:661)
    2011-12-27 18:37:06 [SEVERE]    at net.minecraft.server.NetHandler.a(SourceFile:214)
    2011-12-27 18:37:06 [SEVERE]    at net.minecraft.server.Packet254GetInfo.a(SourceFile:16)
    2011-12-27 18:37:06 [SEVERE]    at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
    2011-12-27 18:37:06 [SEVERE]    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:93)
    2011-12-27 18:37:06 [SEVERE]    at net.minecraft.server.NetworkListenThread.a(SourceFile:108)
    2011-12-27 18:37:06 [SEVERE]    at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:527)
    2011-12-27 18:37:06 [SEVERE]    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:425)
    2011-12-27 18:37:06 [SEVERE]    at net.minecraft.server.ThreadServerApplication.run(SourceFile:457)
    2011-12-27 18:37:06 [SEVERE] Unexpected exception
    java.lang.OutOfMemoryError: unable to create new native thread
        at java.lang.Thread.start0(Native Method)
        at java.lang.Thread.start(Thread.java:614)
        at net.minecraft.server.NetworkManager.d(NetworkManager.java:243)
        at net.minecraft.server.NetServerHandler.disconnect(NetServerHandler.java:119)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:661)
        at net.minecraft.server.NetHandler.a(SourceFile:214)
        at net.minecraft.server.Packet254GetInfo.a(SourceFile:16)
        at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:93)
        at net.minecraft.server.NetworkListenThread.a(SourceFile:108)
        at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:527)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:425)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:457)
    2011-12-27 18:37:16 [INFO] CONSOLE: Stopping the server..
    2011-12-27 18:37:16 [INFO] Stopping server
    
    The [WARNING] go on for quite a while longer, though, I just copied the last bit.
    At that point everyone in the server slowely times out and you are forced to stop and restart it.
    If anyone has an extra info/fixes, please do post.
     
  6. Offline

    Drift_91

    Just had another person do it to me again, this time a different packet. http://pastebin.com/A9EVCkFa

    He and his friend appeared to be using the Epsilon Client (It's a hacked client, I've been told AVO uses it). I just checked up on the latest version of it and it appears to have two new features aimed at flooding, lagging and crashing servers. Not quite sure what a "type spammer" is, but it may be the packet spammer.
     
  7. Offline

    kookiekrak

Thread Status:
Not open for further replies.

Share This Page