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Category:   Device (Embedded Server/Appliance)  >   APC Devices Vendors:   American Power Conversion Corp.
APC Switched Rack PDU Input Validation Flaw Permits Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1023331
SecurityTracker URL:  http://securitytracker.com/id/1023331
CVE Reference:   CVE-2009-4406   (Links to External Site)
Updated:  Dec 28 2009
Original Entry Date:  Dec 15 2009
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): Model AP7932, Harware Revision B2, version 3.3.3 and 3.7.0; possibly other versions
Description:   A vulnerability was reported in the APC Switched Rack PDU. A remote user can conduct cross-site scripting attacks.

The web administration login page ('login1') does not properly filter HTML code from user-supplied input in the 'login_username' parameter before displaying the input. A remote user can create a specially crafted URL that, when loaded by a target user, will cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the APC device and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

The vendor was notified on June 18, 2009.

A demonstration exploit URL is provided:

http://[target]/Forms/login1?login_username=<ScRiPt>alert('hello');</ScRiPt>

Jamal Pecou reported this vulnerability.

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the APC device, access data recently submitted by the target user via web form to the device, or take actions on the device acting as the target user.
Solution:   No solution was available at the time of this entry.
Vendor URL:  www.apc.com/ (Links to External Site)
Cause:   Input validation error
Underlying OS:  

Message History:   None.


 Source Message Contents

Date:  Mon, 14 Dec 2009 14:19:04 -0700
Subject:  APC Switched Rack PDU XSS Vulnerability

###########################################

#APC Switched Rack PDU XSS Vulnerability#
#By Jamal Pecou #
#jpecou (at) gmail (dot) c0m. #

###############Product Info#################

		#Product Info(Tested Versions)#
Model = AP7932
Harware Revision = B2

		#Application Module#
Name = rpdu
Version = v3.3.3(Tested First) 
Version = 3.7.0(Current)

		#APC OS (AOS)
Name = aos
Version = v3.3.4

###############Vulnerability################

XSS Vulnerability:

The APC Switch RACK PDU web administration login page is prone to a cross-site scripting vulnerability because the application fails to sufficiently sanitize user-supplied input. 

The script "login1" located in the Forms directory fails to properly sanitize user input data in the login_username field

####################PoC#####################

Proof-of-Concept

http://<PDU IP>/Forms/login1?login_username=<ScRiPt>alert('hello');</ScRiPt>


################Additional#################

Jun 17th 2009 - Vulnerability Discovered

Jun 18th 2009 - Contacted Vendor

Jun 21st 2009 - APC Creates a ticket and enters finding into bug tracking database.

Dec 14th 2009 - APC, no patches released.

###########################################
 
 


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