Paper/patches/server/0415-Validate-PickItem-Packet-and-kick-for-invalid.patch

27 lines
1.9 KiB
Diff
Raw Normal View History

2021-06-11 14:02:28 +02:00
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 2 May 2020 03:09:46 -0400
Subject: [PATCH] Validate PickItem Packet and kick for invalid
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
2021-12-10 15:24:07 +01:00
index bce9986235833b6ee3b470f8d77f2d38ee017620..ed5beda4b159001de4bc8b624d0cb103e257aed3 100644
2021-06-11 14:02:28 +02:00
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
2021-12-10 15:24:07 +01:00
@@ -876,7 +876,14 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
2021-06-11 14:02:28 +02:00
@Override
public void handlePickItem(ServerboundPickItemPacket packet) {
PacketUtils.ensureRunningOnSameThread(packet, this, this.player.getLevel());
- this.player.getInventory().pickSlot(packet.getSlot());
2021-06-11 14:02:28 +02:00
+ // Paper start - validate pick item position
+ if (!(packet.getSlot() >= 0 && packet.getSlot() < this.player.getInventory().items.size())) {
2021-06-11 14:02:28 +02:00
+ ServerGamePacketListenerImpl.LOGGER.warn("{} tried to set an invalid carried item", this.player.getName().getString());
+ this.disconnect("Invalid hotbar selection (Hacking?)");
+ return;
+ }
+ this.player.getInventory().pickSlot(packet.getSlot()); // Paper - Diff above if changed
2021-06-11 14:02:28 +02:00
+ // Paper end
2021-07-07 08:52:40 +02:00
this.player.connection.send(new ClientboundContainerSetSlotPacket(-2, 0, this.player.getInventory().selected, this.player.getInventory().getItem(this.player.getInventory().selected)));
this.player.connection.send(new ClientboundContainerSetSlotPacket(-2, 0, packet.getSlot(), this.player.getInventory().getItem(packet.getSlot())));
this.player.connection.send(new ClientboundSetCarriedItemPacket(this.player.getInventory().selected));