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Category:   Application (Forum/Board/Portal)  >   TikiWiki Vendors:   tikiwiki.org
(Gentoo Issues Fix) TikiWiki Pictures Feature Lets Remote Users Execute Arbitrary Commands
SecurityTracker Alert ID:  1012815
SecurityTracker URL:  http://securitytracker.com/id/1012815
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Jan 10 2005
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.7.9, 1.8.5, and 1.9dr4
Description:   A vulnerability was reported in TikiWiki in the uploading of image files. A remote authenticated user can execute arbitrary commands on the target system.

The vendor reported that a remote authenticated user with upload privileges can invoke the edit page to upload a PHP script to the 'img/wiki_up' directory instead of an image file. Then, the user can cause the web server to execute the script.

Impact:   A remote authenticated user with upload privileges can execute arbitrary commands on the target system with the privileges of the target web service.
Solution:   Gentoo has released a fix and indicates that all TikiWiki users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=www-apps/tikiwiki-1.8.4.1"

Vendor URL:  tikiwiki.org/tiki-read_article.php?articleId=97 (Links to External Site)
Cause:   Access control error, Input validation error
Underlying OS:  Linux (Gentoo)

Message History:   This archive entry is a follow-up to the message listed below.
Dec 24 2004 TikiWiki Pictures Feature Lets Remote Users Execute Arbitrary Commands



 Source Message Contents

Subject:  [gentoo-announce] [ GLSA 200501-12 ] TikiWiki: Arbitrary command execution



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Gentoo Linux Security Advisory                           GLSA 200501-12
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                                            http://security.gentoo.org/
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  Severity: High
     Title: TikiWiki: Arbitrary command execution
      Date: January 10, 2005
      Bugs: #75568
        ID: 200501-12

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Synopsis
========

A bug in TikiWiki allows certain users to upload and execute malicious
PHP scripts.

Background
==========

TikiWiki is a web-based groupware and content management system (CMS),
using PHP, ADOdb and Smarty.

Affected packages
=================

    -------------------------------------------------------------------
     Package            /  Vulnerable  /                    Unaffected
    -------------------------------------------------------------------
  1  www-apps/tikiwiki      < 1.8.4.1                       >= 1.8.4.1

Description
===========

TikiWiki lacks a check on uploaded images in the Wiki edit page.

Impact
======

A malicious user could run arbitrary commands on the server by
uploading and calling a PHP script.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All TikiWiki users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=www-apps/tikiwiki-1.8.4.1"

References
==========

  [ 1 ] TikiWiki Advisory
        http://tikiwiki.org/tiki-read_article.php?articleId=97

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200501-12.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2005 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.0


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