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Upstream has released updates that appears 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: 42d5a714 SPIGOT-5899: Hoglins API similar to Piglins 2c1ee10e SPIGOT-5887: ClickType doesn't include off hand swaps 5ff7c7ce SPIGOT-5886: Missing BlockData CraftBukkit Changes:7560f5f5
SPIGOT-5905: Fix hex colours not being allowed in MOTDd47c47ee
SPIGOT-5889: Villager using composter should call EntityChangeBlockEvent2fe6b4a3
SPIGOT-5899: Hoglins API similar to Piglinse09dbeca
SPIGOT-5887: ClickType doesn't include off hand swaps23aac2a5
SPIGOT-5903: EntityDismountEvent cannot be triggered asynchronously92cbf656
SPIGOT-5884: Tab completions lost on reloadData / minecraft:reloadfb4e54ad
SPIGOT-5902: PlayerRespawnEvent places player at spawn before event is calledaa8f3d5a
SPIGOT-5901: Structures are generated in all worlds based on the setting for the main worlda0c35937
SPIGOT-5895: PlayerChangedWorldEvent#getFrom is incorrect89c0a5c3
SPIGOT-5886: Missing BlockData Spigot Changes: 0287a20d SPIGOT-5903: EntityDismountEvent cannot be triggered asynchronously
32 lines
1.7 KiB
Diff
32 lines
1.7 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Fri, 12 Jun 2020 16:51:39 -0700
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Subject: [PATCH] Prevent position desync in playerconnection causing tp
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exploit
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Caused the server to revert to the player's overworld coordinates
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after teleporting into the end.
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Sidenote: The underlying issue is that the move call can teleport
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entities and do other things like kill the entity. In the future,
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to fix all exploits derieved from this usually unexpected
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behaviour, we need to move all of this dangerous logic outside
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of the move call and into an appropriate place in the tick method.
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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 6bb2b3520362d056d4d75c65764e4c8dbc1417f9..0ada31b7e5d509409d5d0fb9ac2949f79416ef73 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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@@ -1098,6 +1098,11 @@ public class PlayerConnection implements PacketListenerPlayIn {
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this.player.move(EnumMoveType.PLAYER, new Vec3D(d7, d8, d9));
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this.player.c(packetplayinflying.b()); // CraftBukkit - SPIGOT-5810, SPIGOT-5835: reset by this.player.move
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+ // Paper start - prevent position desync
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+ if (this.teleportPos != null) {
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+ return; // ... thanks Mojang for letting move calls teleport across dimensions.
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+ }
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+ // Paper end - prevent position desync
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double d12 = d8;
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d7 = d4 - this.player.locX();
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