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WebsiteBaker 2.8.1 Cross Site Request Forgery

WebsiteBaker 2.8.1 Cross Site Request Forgery
Posted Aug 13, 2011
Authored by Aung Khant | Site yehg.net

WebsiteBaker versions 2.8.1 and below suffer from a cross site request forgery vulnerability.

tags | exploit, csrf
SHA-256 | 4985c6535048b10187b2438608766520c192ab74e83e2fb391fe83d922fbb652

WebsiteBaker 2.8.1 Cross Site Request Forgery

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1. OVERVIEW

WebsiteBaker 2.8.1 and lower versions are vulnerable to Cross Site Request
Forgery (CSRF).


2. BACKGROUND

WebsiteBaker is a PHP-based Content Management System (CMS) designed with
one goal in mind: to enable its users to produce websites with ease.


3. VULNERABILITY DESCRIPTION

WebsiteBaker 2.8.1 and lower versions contain a flaw that allows a remote
Cross-site Request Forgery (CSRF / XSRF) attack. The flaw exists because the
application does not require multiple steps or explicit confirmation for
sensitive transactions for majority of administrator functions such as
adding new user. By using a crafted URL, an attacker may trick the victim
into visiting to his web page to take advantage of the trust relationship
between the authenticated victim and the application. Such an attack could
trick the victim into executing arbitrary commands in the context of their
session with the application, without further prompting or verification.


4. VERSIONS AFFECTED

2.8.1 <=


5. PROOF-OF-CONCEPT/EXPLOIT

The following request adds an administrator.

[REQUEST]
POST /admin/users/add.php HTTP/1.1
Content-Type: application/x-www-form-urlencoded
Content-Length: 193

user_id=&username_fieldname=username_abcdefg&username_abcdefg=test&password=test&password2=test&display_name=test&email=tester%
40yehg.net&home_folder=&groups%5B%5D=1&active%5B%5D=1&submit=Add
[/REQUEST]


6. SOLUTION

Upgrade to 2.8.2 or higher


7. VENDOR

WebsiteBaker Org e. V.
http://www.websitebaker2.org/


8. CREDIT

This vulnerability was discovered by Aung Khant, http://yehg.net, YGN
Ethical Hacker Group, Myanmar.


9. DISCLOSURE TIME-LINE

2011-01-26: notified vendor
2011-08-01: vendor released fix
2011-08-13: vulnerability disclosed


10. REFERENCES

Original Advisory URL:
http://yehg.net/lab/pr0js/advisories/[websitebaker-2.8.1]_cross_site_request_forgery


#yehg [2011-08-13]
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