Paper/patches/server/0370-Prevent-position-desync-causing-tp-exploit.patch
Bjarne Koll e1c0033552
Updated Upstream (Bukkit/CraftBukkit)
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:
2b4b6d14 PR-1023: Convert InventoryView to interface

CraftBukkit Changes:
68603b1c1 Use expanded interaction ranges for traced interact events
eae9f760c PR-1414: Convert InventoryView to interface
ee9eafe67 Fix Implementation for DamageSource#isIndirect for internal custom causing entity
2024-06-16 17:23:42 +02:00

31 Zeilen
1.8 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Fri, 12 Jun 2020 16:51:39 -0700
Subject: [PATCH] Prevent position desync causing tp exploit
Caused the server to revert to the player's overworld coordinates
after teleporting into the end.
Sidenote: The underlying issue is that the move call can teleport
entities and do other things like kill the entity. In the future,
to fix all exploits derieved from this usually unexpected
behaviour, we need to move all of this dangerous logic outside
of the move call and into an appropriate place in the tick method.
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 9b77b711a172d653a4a96d667551ce83040112e4..151f078ab6081637189d3d532718dac0ec5e46df 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -1350,6 +1350,11 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
this.player.move(MoverType.PLAYER, new Vec3(d6, d7, d8));
this.player.onGround = packet.isOnGround(); // CraftBukkit - SPIGOT-5810, SPIGOT-5835, SPIGOT-6828: reset by this.player.move
+ // Paper start - prevent position desync
+ if (this.awaitingPositionFromClient != null) {
+ return; // ... thanks Mojang for letting move calls teleport across dimensions.
+ }
+ // Paper end - prevent position desync
double d11 = d7;
d6 = d0 - this.player.getX();