From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Thu, 4 Dec 2014 21:14:36 +0000 (+0000)
Subject: Check DKIM fields length before decoding.
X-Git-Tag: 0.8.0~85
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=77f8bd0abd70a67c4ba5b260716fae8371c0612b;p=thirdparty%2Frspamd.git

Check DKIM fields length before decoding.
---

diff --git a/src/libserver/dkim.c b/src/libserver/dkim.c
index ecc218434e..3c6146a376 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;
 				}