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Pull CraftBukkit PR 1021 - Prevent exploitation of custom plugin channels

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md_5 2013-02-24 17:28:42 +11:00
parent a179158f34
commit 7bba9c7354
1 changed files with 77 additions and 0 deletions
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77
CraftBukkit-Patches/0031-Kick-player-on-exception-for-built-in-PluginChannels.patch Normal file
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@ -0,0 +1,77 @@
From 3cf26dc98a5f1484603b8b0ad04e8faaa6eba697 Mon Sep 17 00:00:00 2001
From: Eimref <me@eimref.com>
Date: Wed, 6 Feb 2013 18:59:07 -0500
Subject: [PATCH] Kick player on exception for built-in PluginChannels; Fixes
BUKKIT-3583
---
src/main/java/net/minecraft/server/PlayerConnection.java | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
index 7ca0acf..d1e0207 100644
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
@@ -1483,6 +1483,7 @@ public class PlayerConnection extends Connection {
}
} catch (Exception exception) {
exception.printStackTrace();
+ this.disconnect("Invalid book data!"); // CraftBukkit - prevent exception spam
}
} else if ("MC|BSign".equals(packet250custompayload.tag)) {
try {
@@ -1500,9 +1501,8 @@ public class PlayerConnection extends Connection {
itemstack1.id = Item.WRITTEN_BOOK.id;
}
} catch (Exception exception1) {
- // CraftBukkit start
- // exception1.printStackTrace();
- // CraftBukkit end
+ exception1.printStackTrace();
+ this.disconnect("Invalid book data!"); // CraftBukkit - prevent exception spam
}
} else {
int i;
@@ -1518,6 +1518,7 @@ public class PlayerConnection extends Connection {
}
} catch (Exception exception2) {
exception2.printStackTrace();
+ this.disconnect("Invalid trade data!"); // CraftBukkit - prevent exception spam
}
} else {
int j;
@@ -1541,6 +1542,7 @@ public class PlayerConnection extends Connection {
}
} catch (Exception exception3) {
exception3.printStackTrace();
+ this.disconnect("Invalid CommandBlock data!"); // CraftBukkit - prevent exception spam
}
} else {
this.player.sendMessage(this.player.a("advMode.notAllowed", new Object[0]));
@@ -1564,6 +1566,7 @@ public class PlayerConnection extends Connection {
}
} catch (Exception exception4) {
exception4.printStackTrace();
+ this.disconnect("Invalid beacon data!"); // CraftBukkit - prevent exception spam
}
}
} else if ("MC|ItemName".equals(packet250custompayload.tag) && this.player.activeContainer instanceof ContainerAnvil) {
@@ -1588,6 +1591,7 @@ public class PlayerConnection extends Connection {
}
} catch (UnsupportedEncodingException ex) {
Logger.getLogger(PlayerConnection.class.getName()).log(Level.SEVERE, "Could not parse REGISTER payload in plugin message packet", ex);
+ throw new AssertionError("UTF-8 is an unknown encoding");
}
} else if (packet250custompayload.tag.equals("UNREGISTER")) {
try {
@@ -1597,6 +1601,7 @@ public class PlayerConnection extends Connection {
}
} catch (UnsupportedEncodingException ex) {
Logger.getLogger(PlayerConnection.class.getName()).log(Level.SEVERE, "Could not parse UNREGISTER payload in plugin message packet", ex);
+ throw new AssertionError("UTF-8 is an unknown encoding");
}
} else {
server.getMessenger().dispatchIncomingMessage(player.getBukkitEntity(), packet250custompayload.tag, packet250custompayload.data);
--
1.8.1-rc2