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3e90a19183
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: 304e83eb PR-1002: Improve documentation and implementation of getMaxStackSize e8215ea2 SPIGOT-7638: Library loader does not seem to resolve every dependency 79c595c0 SPIGOT-7637: Bad logic in checking nullability of AttributeModifier slots CraftBukkit Changes: 91b1fc3f1 SPIGOT-7644: Fix ItemMeta#getAsString 4e77a81e1 SPIGOT-7615: PlayerLeashEntityEvent cancelled eats lead 996f660f3 Do not remove leash knot if leasing to an existing leash knot gets cancelled f70367d42 SPIGOT-7643: Fix inverted leash event cancelled usage and remove leash knot if no entity gets leashed 7ddb48294 SPIGOT-7640: Abnormal jumping height of wind charge 080c8711e SPIGOT-7639: Incoming plugin channels not working ad549847e Open a direct connection instead of pinging mojang server to check if it is reachable 38e2926c5 SPIGOT-7365: DamageCause blocked by shield should trigger invulnerableTime
31 lines
1.8 KiB
Diff
31 lines
1.8 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 causing tp 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 b715e7b3230dba24d10230d5e4d8dd5589f93018..2e27141c6cc2dec758f294381da39a683c4e194d 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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@@ -1355,6 +1355,11 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
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this.player.move(MoverType.PLAYER, new Vec3(d6, d7, d8));
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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 d11 = d7;
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d6 = d0 - this.player.getX();
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