Full Disclosure: Re: Joomla! 1.0.x ~ 1.0.15 | Cross Site Scripting (XSS) Vulnerability

[YGN Ethical Hacker Group <lists () yehg net>]

Niels Braczek From Germany Joomla! Community has released a patch:

http://www.joomlaportal.de/sicherheit/241658-joomla-1-0-x-1-0-15-cross-site-scripting-xss-vulnerability.html

It uses the same Joomla! filtering function and thus it's supposed to safe.


For your convenience, download the patched file from
http://yehg.net/lab/pr0js/advisories/joomla/core/patched_com_search.zip
 5368aa00b2d4746e025baa030babc888





Updated advisory.



==============================================================================
 Joomla! 1.0.x ~ 1.0.15 | Cross Site Scripting (XSS) Vulnerability
==============================================================================


1. OVERVIEW

The Joomla! 1.0.x series are currently vulnerable to Cross Site Scripting.
CVE ID, CVE-2011-0005, has been assigned for it.


2. BACKGROUND

Joomla! is a free and open source content management system (CMS) for
publishing content on the World Wide Web and intranets.


3. VULNERABILITY DESCRIPTION

The "ordering" parameter in a core module,com_search, is not properly
sanitized and thus vulnerable to XSS.
By leveraging this vulnerability, attackers can compromise currently
logged-in user/administrator session and impersonate arbitrary user
actions available under /administrator/ functions. As the
vulnerability is based on the core module, it affects both classic and
customized Joomla! 1.0.x based web sites.


4. VERSIONS AFFECTED

Joomla! 1.0.x ~ 1.0.15 series


5. PROOF-OF-CONCEPT/EXPLOIT

http://attacker.in/joomla1015/index.php?option=com_search&searchword=xss&searchphrase=any&ordering=newest%22%20onmousemove=alert%28document.cookie%29%20style=position:fixed;top:0;left:0;width:100%;height:100%;%22


6. SOLUTION

Joomla 1.0.x series has been at end of life since 2009-07-22.

Upgrade to Joomla! 1.5.x family (1.5.22 as of 2011-01-06)

Apply the third-party patch:
http://www.joomlaportal.de/sicherheit/241658-joomla-1-0-x-1-0-15-cross-site-scripting-xss-vulnerability.html



7. VENDOR

Joomla! Developer Team
http://www.joomla.org


8. CREDIT

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


9. DISCLOSURE TIME-LINE

2011-01-03: notified Joomla! Security Strike Team regardless of EOL status
2011-01-06: vulnerability disclosed
2011-01-07: vendor confirmed that they would not release patch


10. VENDOR RESPONSE


> > While noted, your exploit report does not fall within the JSST remit as
> > we no longer support J1.0.x branch (as you are aware and indicate).
> > The vulnerability mentioned is not known to exist in any current supported release.
> > Please ensure you are using the latest version of Joomla!

11. REFERENCES


Original Advisory URL:
http://yehg.net/lab/pr0js/advisories/joomla/core/[joomla_1.0.x~15]_cross_site_scripting
Patched File: http://yehg.net/lab/pr0js/advisories/joomla/core/patched_com_search.zip

Joomla! 1.0.x End of Life -
http://community.joomla.org/blogs/community/509-an-old-friend-comes-of-age.html
OWASP Top 10: http://www.owasp.org/index.php/Category:OWASP_Top_Ten_Project
CWE-79: http://cwe.mitre.org/data/definitions/79.html


#yehg [2011-01-06]

#updated - 2011-01-14
    - added patched link
#updated - 2011-01-07
    - added VENDOR RESPONSE, CVE ID

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