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 Joomla! 1.0.x ~ 1.0.15 | Cross Site Scripting (XSS) Vulnerability (CVE-2011-0005)
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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://localhost/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
Mirror: http://yehg.net/lab/pr0js/advisories/joomla/core/patched_com_search.zip


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