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

By YGN Ethical Hacker Group -
1. OVERVIEW
The Joomla! 1.0.x series are currently vulnerable to Cross Site Scripting.

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)

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

10. REFERENCES
Original Advisory URL:
http://yehg.net/lab/pr0js/advisories/joomla/core/[joomla_1.0.x~15]_cross_site_scripting
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]

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