From f06aa8058b7e32ba32d4551074b6e0b8a300f751 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Mon, 21 Oct 2013 15:02:40 -0400
Subject: [PATCH] Bump version after security fix
---
program/lib/washtml.php | 32 ++++++++++++++++++++++++--------
1 files changed, 24 insertions(+), 8 deletions(-)
diff --git a/program/lib/washtml.php b/program/lib/washtml.php
index 4221abd..d13d664 100644
--- a/program/lib/washtml.php
+++ b/program/lib/washtml.php
@@ -76,6 +76,7 @@
* - added RFC2397 support
* - base URL support
* - invalid HTML comments removal before parsing
+ * - "fixing" unitless CSS values for XHTML output
*/
class washtml
@@ -101,7 +102,7 @@
'cellpadding', 'valign', 'bgcolor', 'color', 'border', 'bordercolorlight',
'bordercolordark', 'face', 'marginwidth', 'marginheight', 'axis', 'border',
'abbr', 'char', 'charoff', 'clear', 'compact', 'coords', 'vspace', 'hspace',
- 'cellborder', 'size', 'lang', 'dir', 'usemap',
+ 'cellborder', 'size', 'lang', 'dir', 'usemap', 'shape', 'media',
// attributes of form elements
'type', 'rows', 'cols', 'disabled', 'readonly', 'checked', 'multiple', 'value'
);
@@ -157,14 +158,17 @@
foreach (explode(';', $style) as $declaration) {
if (preg_match('/^\s*([a-z\-]+)\s*:\s*(.*)\s*$/i', $declaration, $match)) {
$cssid = $match[1];
- $str = $match[2];
+ $str = $match[2];
$value = '';
+
while (sizeof($str) > 0 &&
preg_match('/^(url\(\s*[\'"]?([^\'"\)]*)[\'"]?\s*\)'./*1,2*/
'|rgb\(\s*[0-9]+\s*,\s*[0-9]+\s*,\s*[0-9]+\s*\)'.
'|-?[0-9.]+\s*(em|ex|px|cm|mm|in|pt|pc|deg|rad|grad|ms|s|hz|khz|%)?'.
- '|#[0-9a-f]{3,6}|[a-z0-9", -]+'.
- ')\s*/i', $str, $match)) {
+ '|#[0-9a-f]{3,6}'.
+ '|[a-z0-9", -]+'.
+ ')\s*/i', $str, $match)
+ ) {
if ($match[2]) {
if (($src = $this->config['cid_map'][$match[2]])
|| ($src = $this->config['cid_map'][$this->config['base_url'].$match[2]])) {
@@ -180,13 +184,21 @@
$value .= ' url('.htmlspecialchars($match[2], ENT_QUOTES).')';
}
}
- else if ($match[0] != 'url' && $match[0] != 'rgb') //whitelist ?
+ else { //whitelist ?
$value .= ' ' . $match[0];
+
+ // #1488535: Fix size units, so width:800 would be changed to width:800px
+ if (preg_match('/(left|right|top|bottom|width|height)/i', $cssid) && preg_match('/^[0-9]+$/', $match[0])) {
+ $value .= 'px';
+ }
+ }
$str = substr($str, strlen($match[0]));
}
- if ($value)
+
+ if (isset($value[0])) {
$s .= ($s?' ':'') . $cssid . ':' . $value . ';';
+ }
}
}
return $s;
@@ -202,8 +214,11 @@
$key = strtolower($key);
$value = $node->getAttribute($key);
if (isset($this->_html_attribs[$key]) ||
- ($key == 'href' && preg_match('!^(http:|https:|ftp:|mailto:|//|#).+!i', $value)))
+ ($key == 'href' && !preg_match('!^(javascript|vbscript|data:text)!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;
@@ -225,7 +240,8 @@
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.'"':'');
--
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