From b8b61894df7b9237c41e2afaa67861e1470f4c16 Mon Sep 17 00:00:00 2001
From: Jens Steube <jens.steube@gmail.com>
Date: Wed, 27 Oct 2021 19:43:51 +0200
Subject: [PATCH] Fix segfault in updated parser for -m 19700. To reproduce one
 need to trigger hashcat hash-mode autodetection: ./hashcat /etc/shadow

---
 src/modules/module_19700.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/modules/module_19700.c b/src/modules/module_19700.c
index 0854f1576..dcc02878d 100644
--- a/src/modules/module_19700.c
+++ b/src/modules/module_19700.c
@@ -123,6 +123,11 @@ int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
   const char *usr_start  = line_buf + strlen(SIGNATURE_KRB5TGS);
   char *usr_end = strchr ((const char *) usr_start, '$');
 
+  if (usr_end == NULL)
+  {
+    return (PARSER_SEPARATOR_UNMATCHED);
+  }
+
   if (*(usr_end+1) == '$'){
     is_machine_account = 1;
     usr_end++;