From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Thu, 6 May 2021 14:15:01 +0000 (+0100)
Subject: [Minor] Css: Fix parsing of the url tokens
X-Git-Tag: 3.0~429
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=099ae44013e09d869ec24046ecadbf55038bb878;p=thirdparty%2Frspamd.git

[Minor] Css: Fix parsing of the url tokens
---

diff --git a/src/libserver/css/css_tokeniser.cxx b/src/libserver/css/css_tokeniser.cxx
index f4180b761b..d6ddc2a5f1 100644
--- a/src/libserver/css/css_tokeniser.cxx
+++ b/src/libserver/css/css_tokeniser.cxx
@@ -249,7 +249,7 @@ auto css_tokeniser::consume_ident(bool allow_number) -> struct css_parser_token
 					j++;
 				}
 
-				if (input.size() > 3 && input.substr(0, 3) == "url") {
+				if (input.size() - offset > 3 && input.substr(offset, 3) == "url") {
 					if (input[j] == '"' || input[j] == '\'') {
 						/* Function token */
 						auto ret = maybe_escape_sv(i,