From 6a5eade163c87183078a524361ee7cf099d52076 Mon Sep 17 00:00:00 2001
From: garvinhicking <garvinhicking>
Date: Wed, 13 Jul 2005 13:32:04 +0000
Subject: [PATCH] Fix possible XSS

---
 docs/NEWS                          | 7 ++-----
 include/functions_comments.inc.php | 7 +++++++
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/docs/NEWS b/docs/NEWS
index 5701e1c..e0eadcf 100644
--- a/docs/NEWS
+++ b/docs/NEWS
@@ -3,11 +3,8 @@
 Version 0.8.3 ()
 ------------------------------------------------------------------------
 
-   * XML_RPC: Eliminate path disclosure vulnerabilities by suppressing
-     error messages when eval()'ing. Eliminate path disclosure
-     vulnerability by catching bogus parameters submitted
-     to XML_RPC_Value::serializeval(). (nohn)
-
+   * Fixed possible XSS in comment input validation, thanks to 
+     Ilia  Alshanetsky
 
 Version 0.8.2 (June 29th, 2005)
 ------------------------------------------------------------------------
diff --git a/include/functions_comments.inc.php b/include/functions_comments.inc.php
index 027f956..6213094 100644
--- a/include/functions_comments.inc.php
+++ b/include/functions_comments.inc.php
@@ -177,6 +177,13 @@ function serendipity_printComments($comments, $parentid = 0, $depth = 0, $trace
                 $comment['url'] = 'http://' . $comment['url'];
             }
 
+            if (!empty($comment['url'])) {
+                if (!@parse_url($comment['url'])) {
+                    $comment['url'] = '';
+                }
+                $comment['url'] = htmlspecialchars($comment['url'], ENT_QUOTES);
+            }
+
             serendipity_plugin_api::hook_event('frontend_display', $comment);
 
             if (isset($comment['no_email']) && $comment['no_email']) {
-- 
2.39.5