From f44bbbb9ada39893279965a98831620074205871 Mon Sep 17 00:00:00 2001
From: Philippe Antoine <contact@catenacyber.fr>
Date: Wed, 14 Jul 2021 19:40:42 +0200
Subject: [PATCH] smtp: completes RSET transaction on last multiline

Bug: #4561.
---
 src/app-layer-smtp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/app-layer-smtp.c b/src/app-layer-smtp.c
index e8dc4d585f..bb116ecc0e 100644
--- a/src/app-layer-smtp.c
+++ b/src/app-layer-smtp.c
@@ -1060,7 +1060,8 @@ static int SMTPProcessReply(SMTPState *state, Flow *f,
             SMTPSetEvent(state, SMTP_DECODER_EVENT_DATA_COMMAND_REJECTED);
         }
     } else if (IsReplyToCommand(state, SMTP_COMMAND_RSET)) {
-        if (reply_code == SMTP_REPLY_250) {
+        if (reply_code == SMTP_REPLY_250 &&
+                !(state->parser_state & SMTP_PARSER_STATE_PARSING_MULTILINE_REPLY)) {
             SMTPTransactionComplete(state);
         }
     } else {