bugtraq - [SNS Advisory No.85] XOOPS Multiple Cross-site Scripting Vulnerabilities

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Message-ID: <20051025180301.F52D.SNSADV@lac.co.jp>
Date: Tue, 25 Oct 2005 18:08:08 +0900
From: snsadv@....co.jp (snsadv)
To: bugtraq@...urityfocus.com
Subject: [SNS Advisory No.85] XOOPS Multiple Cross-site Scripting Vulnerabilities


----------------------------------------------------------------------
SNS Advisory No.85
XOOPS Multiple Cross-site Scripting Vulnerabilities

Problem first discovered on: Sun, 25 Sep 2005
Published on: Tue, 25 Oct 2005
----------------------------------------------------------------------

Severity Level:
---------------
  Medium


Overview:
---------
  Software XOOPS for building community websites contains multiple 
  cross-site scripting vulnerabilities.


Problem Description:
--------------------
  XOOPS is software for building community websites written in PHP. 

  XOOPS is provided with the specific tag called "XOOPS Code" that allows
    to register text with font attributes or images without HTML tag for
  modules including private message and forum. 

  Flaw exists in a part of sanitizing processes when converting "XOOPS
  Code" into HTML tag. Therefore, it is possible to register text with
  arbitrary script for "XOOPS Code" available modules. 

  In addition, another flaw also exists only for forum module(newbb) and
  it makes possible to submit text including arbitrary script to a forum.

  If the vulnerabilities are exploited, attacker's script might be
  executed when displaying a private message or a submitted message for
  the forum.  In this incident, users might be suffered from session
  hijack and the screen could be manipulated freely by attackers after 
  the users logging in.


Affected Versions:
------------------
  XOOPS 2.0.12 JP and prior versions 
  XOOPS 2.0.13.1 and prior versions
  XOOPS 2.2.3 RC1 and prior versions


Solution:
---------
  The vulnerabilities can be fixed by updating the software to any 
  version later than XOOPS 2.0.13 JP.
  http://xoopscube.jp/modules/documents/index.php?id=1


Discovered by:
--------------
  Keigo Yamazaki (LAC) 


Thanks to:
----------
This SNS Advisory is being published in coordination with Information-technology 
Promotion Agency, Japan (IPA) and JPCERT/CC. 

  http://jvn.jp/jp/JVN%2377105349/index.html
  http://www.ipa.go.jp/security/vuln/documents/2005/JVN_77105349_XOOPS.html


Disclaimer:
-----------
  The information contained in this advisory may be revised without prior
  notice and is provided as it is. Users shall take their own risk when
  taking any actions following reading this advisory. LAC Co., Ltd.
  shall take no responsibility for any problems, loss or damage caused
  by, or by the use of information provided here.

  This advisory can be found at the following URL:
  http://www.lac.co.jp/business/sns/intelligence/SNSadvisory_e/85_e.html
----------------------------------------------------------------------