Citrix NetScaler VPX Cross Site Scripting

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Citrix NetScaler VPX help pages are vulnerable to Cross-Site Scripting  
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Han Sahin, August 2014  
  
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Abstract  
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It was discovered that the help pages of Citrix VPX are vulnerable to  
Cross-Site Scripting. This issue allows attackers to perform a wide  
variety of actions, such as stealing the victim's session token or login  
credentials, performing arbitrary actions on the victim's behalf, and  
logging their keystrokes.  
  
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Tested version  
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This issue was discovered in Citrix NetScaler VPX NSVPX-ESX-10.5-50.10,  
other versions may also be vulnerable.  
  
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Fix  
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Citrix reports that this vulnerability is fixed in NetScaler 10.5 build  
52.8nc.  
  
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Details  
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https://www.securify.nl/advisory/SFY20140807/citrix_netscaler_vpx_help_pages_are_vulnerable_to_cross_site_scripting.html  
  
This issue exists because the value of the searchQuery URL parameter is assigned client-side to contentDiv.innerHTML (DOM-based Cross-Site Scripting), for example:  
  
https://<target>/help/rt/large_search.html?searchQuery=<h1>Reset your password below:<h1><iframe src='http://www.evil.com'/>&type=ctxTV  
  
Tricking a victim into visiting a specially crafted URL allows attackers to run arbitrary client-side scripting code within the victim's browser. The attacker-supplied code can perform a wide variety of actions, such as stealing the victim's session token or login credentials, performing arbitrary actions on the victim's behalf, and logging their keystrokes.  
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