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ce270e1412
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: b2f1908c SPIGOT-5783: Add helpful info to UnknownDependencyException e4f46260 SPIGOT-2623: Add EntityEquipment methods to get/set ItemStacks by slot. 529a9a69 SPIGOT-5751: Clarify behaviour of block drop-related API methods CraftBukkit Changes:8ea9b138Remove outdated build delay.ffc2b251Revert "#675: Fix redirected CommandNodes sometimes not being properly redirected"cb701f6b#675: Fix redirected CommandNodes sometimes not being properly redirectedc9d7c16bSPIGOT-2623: Add EntityEquipment methods to get/set ItemStacks by slot.fad2494a#673: Fix Craftworld#isChunkLoaded8637ec00SPIGOT-5751: Made breakNaturally and getDrops returns the correct item if no argument is given Spigot Changes: a99063f7 Rebuild patches Fixes #3602
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 f9cb87a3be35575ecf3362b10dc7fe5ebadb56ec..2109afc8ca0af636be2d7e7c041e3160448f4a38 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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@@ -1080,6 +1080,11 @@ public class PlayerConnection implements PacketListenerPlayIn {
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}
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this.player.move(EnumMoveType.PLAYER, new Vec3D(d7, d8, d9));
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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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this.player.onGround = packetplayinflying.b();
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double d12 = d8;
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