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authorLoki Rautio <lokirautio@gmail.com>2026-03-09 04:45:14 -0500
committerLoki Rautio <lokirautio@gmail.com>2026-03-09 04:45:14 -0500
commitd557ca2dfba5ffcca99ceb41b07d149f871964b5 (patch)
tree89ef5bd5fdb2a86fe10a5dead65b65bce8aa0a1d /Minecraft.World/DataInputStream.cpp
parent0c4f4599045edad935403e4d79d28f6b9aa95833 (diff)
LCEMP RCE fixes
Based on commit d017bfc30a68888bf5c79b23cf5c4f607cf828bf
Diffstat (limited to 'Minecraft.World/DataInputStream.cpp')
-rw-r--r--Minecraft.World/DataInputStream.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/Minecraft.World/DataInputStream.cpp b/Minecraft.World/DataInputStream.cpp
index 4e4f5cd1..0cd21a7e 100644
--- a/Minecraft.World/DataInputStream.cpp
+++ b/Minecraft.World/DataInputStream.cpp
@@ -303,6 +303,10 @@ wstring DataInputStream::readUTF()
int b = stream->read();
unsigned short UTFLength = static_cast<unsigned short>(((a & 0xff) << 8) | (b & 0xff));
+ const unsigned short MAX_UTF_LENGTH = 32767;
+ if (UTFLength > MAX_UTF_LENGTH)
+ return outputString;
+
//// 4J Stu - I decided while writing DataOutputStream that we didn't need to bother using the UTF8 format
//// used in the java libs, and just write in/out as wchar_t all the time