geforkt von Mirrors/Paper
0ea3083817
Upstream has released updates that appear to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing Bukkit Changes: 1e843b72 #510: Add NamespacedKey#fromString() to fetch from user input a4d18241 #581: Add methods to modify despawn delay for wandering villagers CraftBukkit Changes: 0cd8f19f #802: Add methods to modify despawn delay for wandering villagers d5c5d998 SPIGOT-6362: ConcurrentModificationException: null --> Server Crash 8c7d69fe SPIGOT-5228: Entities that are removed during chunk unloads are not properly removed from the chunk.
27 Zeilen
1.8 KiB
Diff
27 Zeilen
1.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Sat, 2 May 2020 03:09:46 -0400
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Subject: [PATCH] Validate PickItem Packet and kick for invalid
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diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
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index cb8230a06b4ff152d284d0bb65f40e4490bd5bfb..952aa22b5c35852a8d394cf6814c4ab00c58e599 100644
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--- a/src/main/java/net/minecraft/server/PlayerConnection.java
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+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
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@@ -733,7 +733,14 @@ public class PlayerConnection implements PacketListenerPlayIn {
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@Override
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public void a(PacketPlayInPickItem packetplayinpickitem) {
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PlayerConnectionUtils.ensureMainThread(packetplayinpickitem, this, this.player.getWorldServer());
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- this.player.inventory.c(packetplayinpickitem.b());
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+ // Paper start - validate pick item position
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+ if (!(packetplayinpickitem.b() >= 0 && packetplayinpickitem.b() < this.player.inventory.items.size())) {
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+ PlayerConnection.LOGGER.warn("{} tried to set an invalid carried item", this.player.getDisplayName().getString());
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+ this.disconnect("Invalid hotbar selection (Hacking?)");
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+ return;
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+ }
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+ this.player.inventory.c(packetplayinpickitem.b()); // Paper - Diff above if changed
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+ // Paper end
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this.player.playerConnection.sendPacket(new PacketPlayOutSetSlot(-2, this.player.inventory.itemInHandIndex, this.player.inventory.getItem(this.player.inventory.itemInHandIndex)));
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this.player.playerConnection.sendPacket(new PacketPlayOutSetSlot(-2, packetplayinpickitem.b(), this.player.inventory.getItem(packetplayinpickitem.b())));
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this.player.playerConnection.sendPacket(new PacketPlayOutHeldItemSlot(this.player.inventory.itemInHandIndex));
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