mirror of
https://github.com/BX-Team/DivineMC.git
synced 2025-12-20 15:29:15 +00:00
41643d7f29
Upstream has released updates that appear to apply and compile correctly Purpur Changes: PurpurMC/Purpur@962ee30 Updated Upstream (Paper) PurpurMC/Purpur@74d1b4c Updated Upstream (Paper) PurpurMC/Purpur@e2e8c61 Updated Upstream (Paper) PurpurMC/Purpur@7a01fd8 Updated Upstream (Paper) PurpurMC/Purpur@34c18f0 Updated Upstream (Paper) PurpurMC/Purpur@ca668ab Updated Upstream (Paper)
48 lines
2.8 KiB
Diff
48 lines
2.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: NONPLAYT <76615486+NONPLAYT@users.noreply.github.com>
|
|
Date: Thu, 23 May 2024 02:06:30 +0300
|
|
Subject: [PATCH] Block Log4Shell exploit
|
|
|
|
|
|
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
|
|
index 50bc64000f24aa2ae0df2ce7fc77f27d760b8764..9aabf8d4a333f96f1431da12cd42766a6d1676bd 100644
|
|
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
|
|
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
|
|
@@ -2454,6 +2454,7 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
|
|
}
|
|
|
|
private void tryHandleChat(String s, Runnable runnable, boolean sync) { // CraftBukkit
|
|
+ if (ServerGamePacketListenerImpl.isLog4ShellExploit(s)) return; // DivineMC - Block Log4Shell exploit
|
|
if (ServerGamePacketListenerImpl.isChatMessageIllegal(s)) {
|
|
this.disconnectAsync((Component) Component.translatable("multiplayer.disconnect.illegal_characters"), org.bukkit.event.player.PlayerKickEvent.Cause.ILLEGAL_CHARACTERS); // Paper // Paper - add proper async disconnect
|
|
} else if (this.player.isRemoved() || this.player.getChatVisibility() == ChatVisiblity.HIDDEN) { // CraftBukkit - dead men tell no tales
|
|
@@ -2485,6 +2486,15 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
|
|
}
|
|
}
|
|
|
|
+ // DivineMC start - Block Log4Shell exploit
|
|
+ public static boolean isLog4ShellExploit(String message) {
|
|
+ java.util.regex.Pattern pattern = java.util.regex.Pattern.compile(".*\\$\\{[^}]*}.*");
|
|
+ java.util.regex.Matcher matcher = pattern.matcher(message);
|
|
+
|
|
+ return matcher.find();
|
|
+ }
|
|
+ // DivineMC end
|
|
+
|
|
public static boolean isChatMessageIllegal(String message) {
|
|
for (int i = 0; i < message.length(); ++i) {
|
|
if (!StringUtil.isAllowedChatCharacter(message.charAt(i))) {
|
|
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
|
|
index 3ffd75c2547e1c113f65cf258ae6a9ce8d353fef..100ea754bd2168628251f2c66356e13224b2cfb5 100644
|
|
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
|
|
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
|
|
@@ -756,6 +756,8 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
|
|
Preconditions.checkArgument(msg != null, "msg cannot be null");
|
|
|
|
if (this.getHandle().connection == null) return;
|
|
+
|
|
+ if (ServerGamePacketListenerImpl.isLog4ShellExploit(msg)) return; // DivineMC - Block Log4Shell exploit
|
|
|
|
// Paper start - Improve chat handling
|
|
if (ServerGamePacketListenerImpl.isChatMessageIllegal(msg)) {
|