Advisory Text :  

[HSC] Multiple CSRF in Joomla all versions - Complete compromise


Hackers Center Security Group (http://www.hackerscenter.com)
Credit: Armando Romeo aka Zinho


Class: CSRF
Remote: Yes
Risk: HIGH

Product: Joomla
Version: All (1.0.13 and 1.5 rc3 tested)
Vendor: http://www.joomla.com
Patch: Joomla 1.5 RC4



"Joomla! is one of the most powerful Open Source Content Management
Systems on the planet. It is used all over the world for everything
from simple websites to complex corporate applications. Joomla! is easy

to install, simple to manage, and reliable"



Joomla is vulnerable to CSRF attacks into all of its released versions
including the RC3 of 1.5.


+] Affected areas

-Users
The attack allows everyone (no privileges needed) to add a new Super
Admin by just having a Super Admin visiting a url

-Extension installation
The attack allow everyone (no privileges needed) to upload an extension

from a remote location, thus having malicious PHP scripts on server.
Read PHP shell.

-Global configuration
The attack allows everyone (no privileges needed) to change all the
aspects of the site main configuration, including database
configuration.

Defacement or complete portal compromise is possible including having
access to the database.


+] Notes

Joomla has been contacted on 12/4/2007. Fast and professional response
was given. Patched in SVN 4 days later and then with the RC4 release.
Time to face CSRF, community!

+] Patch

Patch of the above vulnerabilities is included into the RC4 release of
Joomla 1.5
As far as I know 1.0 has not been fixed so all the 1.0.x versions are
vulnerable and unpatched,
that's why I'm not including a POC here.

http://kit.hackerscenter.com - The most comprehensive security pack you

will ever find on the net!
--
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Zinho

Webmaster and Founder

Hackers Center
Internet Security Portal
www.hackerscenter.com