1. OVERVIEW

CubeCart 5.0.7 and lower versions are vulnerable to Insecure Backup
File Handling which leads to the disclosure of the application
configuration file.


2. BACKGROUND

CubeCart is an "out of the box" ecommerce shopping cart software
solution which has been written to run on servers that have PHP &
MySQL support. With CubeCart you can quickly setup a powerful online
store which can be used to sell digital or tangible products to new
and existing customers all over the world.


3. VULNERABILITY DESCRIPTION

CubeCart 5.0.7 and lower versions contain a flaw that insecurely backs
up the configuration file, "global.inc.php", upon new installation or
upgrade process. The name of backup configuration file is set to the
year, month, day, hour, minute that the process is performed.  The
non-randomized nature of this backup scheme allows an attacker to
retrieve the file through brute-force method.


4. VERSIONS AFFECTED

5.0.7 and lower versions


5. Affected Files

/setup/setup.install.php
/setup/setup.upgrade.php

///////////CODE //////////////
##Backup existing config file, if it exists
if (file_exists($global_file)) {
  rename($global_file, $global_file.'-'.date('Ymdgi'));
}
/////////////////////////

e.g.
http://127.0.0.1/cube507/includes/global.inc.php-2012021245719    \

  
6. SOLUTION

Upgrade to the latest CubeCart version - 5.x.


7. VENDOR

CubeCart Development Team
http://cubecart.com/


8. CREDIT

Aung Khant, http://yehg.net, YGN Ethical Hacker Group, Myanmar.


9. DISCLOSURE TIME-LINE

2012-03-24: Vulnerability reported
2012-12-28: Vulnerability disclosed


10. REFERENCES

Original Advisory URL:
http://yehg.net/lab/pr0js/advisories/%5Bcubecart_5.0.7%5D_insecure-backup
CubeCart Home Page: http://cubecart.com/

#yehg [2012-12-28]

---------------------------------
Best regards,
YGN Ethical Hacker Group
Yangon, Myanmar
http://yehg.net
Our Lab | http://yehg.net/lab
Our Directory | http://yehg.net/hwd