XOOPS MyTextSanitizer Filtering Bug Allows Remote Users to Conduct Cross-Site Scripting Attacks in many modules: News, newbb, private messages, signatures etc...

From: Doxical (doxical_at_WANADOO.FR)
Date: 04/26/03

  • Next message: NGSSoftware Insight Security Research: "Oracle Database Server Buffer Overflow Vulnerability (#NISR29042003)"
    Date:         Sat, 26 Apr 2003 18:13:38 +0200
    To: NTBUGTRAQ@LISTSERV.NTBUGTRAQ.COM
    
    

    Date: 25/04/2003
    Impact: Disclosure of authentication information, Execution of arbitrary code via network, Modification of user information, admin account hijacking.
    Fix: yes

    --------------------------------------------------

    Introduction

    After the module glossary and gallery of xoops, we have found an another risk in MytextSanitizer who permit somme CSS injection in xoops versions 1.3.x to 2.x
    Description of the MyTextSanitizer script :

    This is just the function on xoops who filter spécial charactèrs or malicious scripts.

    The vulnerability :

    A remote user can bypass Sanitizer and conduct cross-site scripting attacks with a post in a topic in board (newbb) send malicious private message to admin, insert script in the news comment...

    Example :

    java script:alert%28document.cookie%29
    with img tags

    History:

    -the team of xoops.org was prevented on 04/21/2003
    -Patch are now available since 04/25/2003

    ------------------------------------
    Regards
    www.blocus-zone.com

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