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* Updated Upstream (Bukkit/CraftBukkit/Spigot) 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: 8085edde SPIGOT-6918: Add SpawnCategory API and configurations for Axolotls 04c7e13c PR-719: Add Player Profile API 71564210 SPIGOT-6910: Add BlockDamageAbortEvent CraftBukkit Changes: febaa1c6 SPIGOT-6918: Add SpawnCategory API and configurations for Axolotls 9dafd109 Don't send updates over large distances bdac46b0 SPIGOT-6782: EntityPortalEvent should not destroy entity when setTo() uses same world as getFrom() 8f361ece PR-1002: Add Player Profile API 911875d4 Increase outdated build delay e5f8a767 SPIGOT-6917: Use main scoreboard for /trigger a672a531 Clean up callBlockDamageEvent 8e1bdeef SPIGOT-6910: Add BlockDamageAbortEvent Spigot Changes: 6edb62f3 Rebuild patches 7fbc6a1e Rebuild patches * Updated Upstream (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 CraftBukkit Changes: de951355 SPIGOT-6927: Fix default value of spawn-limits in Worlds
31 lines
1.9 KiB
Diff
31 lines
1.9 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/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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index f7542d053be38298229719bd63e950fc6d167fb9..1030a835086591bcc166ef1e52db8b7a62da5292 100644
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--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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@@ -1329,6 +1329,11 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
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this.player.move(MoverType.PLAYER, new Vec3(d7, d8, d9));
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this.player.onGround = packet.isOnGround(); // CraftBukkit - SPIGOT-5810, SPIGOT-5835, SPIGOT-6828: reset by this.player.move
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+ // Paper start - prevent position desync
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+ if (this.awaitingPositionFromClient != 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 = d0 - this.player.getX();
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