From 77f8bd0abd70a67c4ba5b260716fae8371c0612b Mon Sep 17 00:00:00 2001
From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Thu, 4 Dec 2014 21:14:36 +0000
Subject: [PATCH] Check DKIM fields length before decoding.

---
 src/libserver/dkim.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libserver/dkim.c b/src/libserver/dkim.c
index ecc218434..3c6146a37 100644
--- a/src/libserver/dkim.c
+++ b/src/libserver/dkim.c
@@ -629,6 +629,7 @@ rspamd_create_dkim_context (const gchar *sig,
 		case DKIM_STATE_VALUE:
 			if (*p == ';') {
 				if (param == DKIM_PARAM_UNKNOWN ||
+					p - c == 0 ||
 					!parser_funcs[param](new, c, p - c, err)) {
 					state = DKIM_STATE_ERROR;
 				}
-- 
2.39.5