full-disclosure - WebsiteBaker 2.8.1 <= Arbitrary File Upload Vulnerability

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Message-ID: <CAPYM6VyF-XP=d6-RTerP5eeMyUOmK415VLpaYpbVyScP5x16sg@mail.gmail.com>
Date: Sat, 13 Aug 2011 20:19:44 +0800
From: YGN Ethical Hacker Group <lists@...g.net>
To: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com, 
	bugs@...uritytracker.com, vuln@...unia.com, secalert@...urityreason.com,
	news@...uriteam.com, vuln@...urity.nnov.ru, moderators@...db.org, 
	submissions@...ketstormsecurity.org
Subject: WebsiteBaker 2.8.1 <= Arbitrary File Upload
	Vulnerability

1. OVERVIEW

WebsiteBaker 2.8.1 and lower versions are vulnerable to Arbitrary File Upload.

2. BACKGROUND

WebsiteBaker helps you to create the website you want: A free, easy
and secure, flexible and extensible open source content management
system (CMS). Create new templates within minutes - powered by
(X)HTML, CSS and jQuery. With WebsiteBaker it's quite natural your
site is W3C-valid, SEO-friendly and accessible - there are no
limitations at all.

3. VULNERABILITY DESCRIPTION

WebsiteBaker 2.8.1 and lower versions contain a flaw related to the
/admin/media/upload.php script failing to restrict uploaded files with
extensions - .htaccess, .php4, .php5, .phtml. This may allow an
attacker to execute arbitrary PHP code. User account to WebsiteBaker
admin backend is required. Attacker could gain access it by way of
either brute force or CSRFing to currently-logged in admin users.

4. VERSIONS AFFECTED

2.8.1 <=

5. SOLUTION

Upgrade to 2.8.2 or higher

6. VENDOR

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

7. CREDIT

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

8. DISCLOSURE TIME-LINE

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

9. REFERENCES

Original Advisory URL:
http://yehg.net/lab/pr0js/advisories/[websitebaker-2.8.1]_arbitrary_file_upload
http://www.gnucitizen.org/blog/cross-site-file-upload-attacks/

#yehg [2011-08-13]

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