Waterfall/Waterfall-Proxy-Patches/0022-Check-if-packetID-is-invalid.patch
2022-12-21 21:56:04 -03:00

28 lines
1.3 KiB
Diff

From 7e20c899237e194fbda629aa6be4444fbe293b7d Mon Sep 17 00:00:00 2001
From: PermisosDev <55111245+PermisosDev@users.noreply.github.com>
Date: Thu, 15 Apr 2021 08:34:57 -0300
Subject: [PATCH] Check if packetID is invalid.
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/MinecraftDecoder.java b/protocol/src/main/java/net/md_5/bungee/protocol/MinecraftDecoder.java
index 70a1192e7..6316143f7 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/MinecraftDecoder.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/MinecraftDecoder.java
@@ -65,7 +65,12 @@ public class MinecraftDecoder extends MessageToMessageDecoder<ByteBuf>
int packetId = DefinedPacket.readVarInt( in );
packetTypeInfo = packetId;
-
+ // FlameCord Start - Check if packetId is invalid.
+ if (packetId < 0 || packetId > Protocol.MAX_PACKET_ID)
+ {
+ throw new FastDecoderException( "[" + ctx.channel().remoteAddress() + "] <-> MinecraftDecoder received invalid packet #1, id " + packetId );
+ }
+ // Flamecord End
DefinedPacket packet = prot.createPacket( packetId, protocolVersion, supportsForge );
if ( packet != null )
{
--
2.37.3.windows.1