bugtraq - Re: QuickBlogger v1.4 Cross-Site Scripting

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <200604142201.k3EM1LOA011897@cairo.mitre.org>
Date: Fri, 14 Apr 2006 18:01:21 -0400 (EDT)
From: "Steven M. Christey" <coley@...re.org>
To: bugtraq@...urityfocus.com
Subject: Re: QuickBlogger v1.4 Cross-Site Scripting

This is yet another case where XSS is resultant from a more serious
issue.  The primary issue here involves local file inclusion.
retrogod-style attacks might be feasible by injecting PHP code into
text-based data files within the application, then including those
text files using this issue; however, I did not explore it that
deeply.

Based on a download of the 1.4 source from another location, we have
the following code from acc.php:

   if ($_GET['request'] == "") {
   $page = "actions/main.php";
   }
   else {
   $page = "actions/" . $_GET['request'] . ".php";
   }
   include $page;

I can use ".." sequences to include arbitrary PHP files, and null
character injection for arbitrary files of other types:

   acc.php?request=../../../abcdef.txt%00

So - what happens when I use the original XSS manipulation provided by
botan?

  acc.php?request=<script>alert(document.cookie)</script>

If my PHP errors are set up properly, and if I've got a version of PHP
that allows XSS in error messages, I get:

  Warning: main(): Failed opening
  'actions/<script>alert(document.cookie)</script>.php' for inclusion
  (include_path='[PATH HERE]') in acc.php on line 220

This was tested on QuickBlogger 1.4 under PHP 4.

- Steve