From 5ef8e4ad9d3ee8689d2b83750aa65395b7cd59ee Mon Sep 17 00:00:00 2001 From: Aleksander Machniak Date: Wed, 15 Aug 2012 10:12:18 +0200 Subject: Fix XSS issue with href="javascript:" not being removed (#1488613) --- program/lib/washtml.php | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'program/lib/washtml.php') diff --git a/program/lib/washtml.php b/program/lib/washtml.php index c12315fec..98ae5ed5a 100644 --- a/program/lib/washtml.php +++ b/program/lib/washtml.php @@ -214,8 +214,11 @@ class washtml $key = strtolower($key); $value = $node->getAttribute($key); if (isset($this->_html_attribs[$key]) || - ($key == 'href' && preg_match('!^([a-z][a-z0-9.+-]+:|//|#).+!i', $value))) + ($key == 'href' && !preg_match('!^javascript!i', $value) + && preg_match('!^([a-z][a-z0-9.+-]+:|//|#).+!i', $value)) + ) { $t .= ' ' . $key . '="' . htmlspecialchars($value, ENT_QUOTES) . '"'; + } else if ($key == 'style' && ($style = $this->wash_style($value))) { $quot = strpos($style, '"') !== false ? "'" : '"'; $t .= ' style=' . $quot . $style . $quot; @@ -237,7 +240,8 @@ class washtml else if (preg_match('/^data:.+/i', $value)) { // RFC2397 $t .= ' ' . $key . '="' . htmlspecialchars($value, ENT_QUOTES) . '"'; } - } else + } + else $washed .= ($washed?' ':'') . $key; } return $t . ($washed && $this->config['show_washed']?' x-washed="'.$washed.'"':''); -- cgit v1.2.3