Fix component extra empty array exploit (#83)

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Luna 2023-05-29 20:32:04 -03:00 committed by GitHub
parent 92a9dd9634
commit 020afc9e99
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@ -0,0 +1,23 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Luna <lunahatesgogle@gmail.com>
Date: Mon, 29 May 2023 19:47:48 -0300
Subject: [PATCH] Fix component extra empty array exploit
diff --git a/src/main/java/net/minecraft/network/chat/Component.java b/src/main/java/net/minecraft/network/chat/Component.java
index e6d733fc3a4acdb3fd91b5644285854943a02761..68d7739e44dc31ddf3f3c4fca4b3b7095060ac52 100644
--- a/src/main/java/net/minecraft/network/chat/Component.java
+++ b/src/main/java/net/minecraft/network/chat/Component.java
@@ -248,6 +248,12 @@ public interface Component extends Message, FormattedText, Iterable<Component> {
} else if (!jsonelement.isJsonObject()) {
if (jsonelement.isJsonArray()) {
JsonArray jsonarray = jsonelement.getAsJsonArray();
+ // Scissors start
+ if (jsonarray.size() <= 0) {
+ throw new JsonParseException("Unexpected empty array of components");
+ }
+ // Scissors end
+
MutableComponent ichatmutablecomponent = null;
Iterator iterator = jsonarray.iterator();