Joomla! Input Validation Hole Permits Cross-Site Request Forgery Attacks
SecurityTracker Alert ID: 1019145|
SecurityTracker URL: http://securitytracker.com/id/1019145
CVE-2007-6642, CVE-2007-6643, CVE-2007-6644, CVE-2007-6645
(Links to External Site)
Updated: Jan 4 2008|
Original Entry Date: Dec 27 2007
Disclosure of user information, Execution of arbitrary code via network, Modification of user information, User access via network|
Fix Available: Yes Vendor Confirmed: Yes |
Version(s): 1.5 RC3 and prior versions|
Armando Romeo (aka Zinho) from Hackers Center Security Group reported a vulnerability in Joomla!. A remote user can conduct cross-site request forgery attacks to gain administrative privileges.|
Several administrative components do not properly filter HTML code from user-supplied input before displaying the input. A remote user can create a specially crafted URL that, when loaded by a target authenticated administrator, will cause arbitrary requests to be executed by the target user's browser. The requests can take actions on the site acting as the target administrator.
This can be exploited to modify the application's configuration. This can also be exploited to upload arbitrary PHP code and subsequently execute arbitrary commands on the target system.
The vendor separately reported other vulnerabilities: A remote authenticated user can gain elevated privileges; A fixed administrator can include other users in the administrator group; a remote user can conduct cross-site scripting attacks via com_poll.
A remote user can take actions on the site acting as the target administrative user, including modifying the application's configuration or database and uploading and executing arbitrary PHP code.|
The vendor has issued a fixed version (1.5 RC4).|
Vendor URL: www.joomla.org/ (Links to External Site)
Input validation error|
|Underlying OS: Linux (Any), UNIX (Any), Windows (Any)|
Source Message Contents
Subject: [HSC Security Group] Multiple CSRF in Joomla all versions - Complete|
[HSC] Multiple CSRF in Joomla all versions - Complete compromise
Hackers Center Security Group (http://www.hackerscenter.com)
Credit: Armando Romeo aka Zinho
Version: All (1.0.13 and 1.5 rc3 tested)
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
The attack allows everyone (no privileges needed) to add a new Super
Admin by just having a Super Admin visiting a url
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.
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.
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 of the above vulnerabilities is included into the RC4 release of
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.
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