Paper/CraftBukkit-Patches/0121-Prevent-a-crash-involving-attributes.patch

From d8413b16c197862cbf7787bddb9e0900984772de Mon Sep 17 00:00:00 2001
From: Thinkofdeath <thinkofdeath@spigotmc.org>
Date: Sat, 19 Jul 2014 19:54:41 +0100
Subject: [PATCH] Prevent a crash involving attributes


diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index c5fdd6d..b1521b6 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -1308,7 +1308,15 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
                 break;
             }
         }
-        collection.add(new AttributeModifiable(getHandle().getAttributeMap(), (new AttributeRanged(null, "generic.maxHealth", scaledHealth ? healthScale : getMaxHealth(), 0.0D, Float.MAX_VALUE)).a("Max Health").a(true)));
+        // Spigot start
+        double healthMod = scaledHealth ? healthScale : getMaxHealth();
+        if ( healthMod >= Float.MAX_VALUE || healthMod <= 0 )
+        {
+            healthMod = 20; // Reset health
+            getServer().getLogger().warning( getName() + " tried to crash the server with a large health attribute" );
+        }
+        collection.add(new AttributeModifiable(getHandle().getAttributeMap(), (new AttributeRanged(null, "generic.maxHealth", healthMod, 0.0D, Float.MAX_VALUE)).a("Max Health").a(true)));
+        // Spigot end
     }
 
     @Override
-- 
2.5.0