From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Fri, 10 Nov 2017 18:51:57 +0000 (+0000)
Subject: [Minor] Fix off-boundary access
X-Git-Tag: 1.7.0~455
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=8b1cf85652664b562a70060fc30e62b90823daee;p=thirdparty%2Frspamd.git

[Minor] Fix off-boundary access
---

diff --git a/src/libserver/html.c b/src/libserver/html.c
index 42b2447e0b..8ff6b6fad7 100644
--- a/src/libserver/html.c
+++ b/src/libserver/html.c
@@ -2076,6 +2076,11 @@ rspamd_html_check_displayed_url (rspamd_mempool_t *pool,
 	gboolean url_found = FALSE;
 	struct rspamd_process_exception *ex;
 
+	if (href_offset <= 0) {
+		/* No dispalyed url, just some text within <a> tag */
+		return;
+	}
+
 	rspamd_html_url_is_phished (pool, url,
 			dest->data + href_offset,
 			dest->len - href_offset,