From 15447cc672db53aa4e39de6a403396a3b6ed9e22 Mon Sep 17 00:00:00 2001
From: Philippe Antoine <contact@catenacyber.fr>
Date: Fri, 11 Sep 2020 09:44:25 +0200
Subject: [PATCH] dceprc: signature rust check with is_char_boundary

before calling split_at which would panic
---
 rust/src/dcerpc/detect.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rust/src/dcerpc/detect.rs b/rust/src/dcerpc/detect.rs
index 7e1296c3ae..8f1b27727f 100644
--- a/rust/src/dcerpc/detect.rs
+++ b/rust/src/dcerpc/detect.rs
@@ -60,7 +60,7 @@ pub struct DCEOpnumData {
 }
 
 fn extract_op_version(opver: &str) -> Result<(u8, u16), ()> {
-    if opver.len() < 1 {
+    if !opver.is_char_boundary(1){
         return Err(());
     }
     let (op, version) = opver.split_at(1);