From 5f25174f5285d5b919132e885514dcdfeedb7a11 Mon Sep 17 00:00:00 2001
From: root <root@www.cacert.org>
Date: Fri, 10 Apr 2009 22:22:16 +0000
Subject: [PATCH] http://bugs.cacert.org/view.php?id=618

---
 www/index.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/www/index.php b/www/index.php
index bf85018..4449267 100644
--- a/www/index.php
+++ b/www/index.php
@@ -434,7 +434,9 @@
 			$_SESSION['_config']['errmsg'] .= _("First and/or last names were blank.")."<br>\n";
 		}
 		if($_SESSION['signup']['year'] < 1900 || $_SESSION['signup']['month'] < 1 || $_SESSION['signup']['month'] > 12 ||
-			$_SESSION['signup']['day'] < 1 || $_SESSION['signup']['day'] > 31)
+			$_SESSION['signup']['day'] < 1 || $_SESSION['signup']['day'] > 31 ||
+			!checkdate($_SESSION['signup']['month'],$_SESSION['signup']['day'],$_SESSION['signup']['year']) ||
+			mktime(0,0,0,$_SESSION['signup']['month'],$_SESSION['signup']['day'],$_SESSION['signup']['year']) > time() )
 		{
 			$id = 1;
 			$_SESSION['_config']['errmsg'] .= _("Invalid date of birth")."<br>\n";