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Citrix ADC (NetScaler) Forms SSO Target RCE

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Citrix ADC (NetScaler) Forms SSO Target RCE

Disclosed
07/18/2023
Created
08/03/2023

Description

A vulnerability exists within Citrix ADC that allows an unauthenticated attacker to trigger a stack buffer overflow of the nsppe process by making a specially crafted HTTP GET request. Successful exploitation results in remote code execution as root.

Author(s)

  • Ron Bowes
  • Douglass McKee
  • Spencer McIntyre
  • rwincey

Platform

Unix

Architectures

cmd

Development

Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':

msf > use exploit/freebsd/http/citrix_formssso_target_rce
msf exploit(citrix_formssso_target_rce) > show targets
    ...targets...
msf exploit(citrix_formssso_target_rce) > set TARGET < target-id >
msf exploit(citrix_formssso_target_rce) > show options
    ...show and set options...
msf exploit(citrix_formssso_target_rce) > exploit

Time is precious, so I don’t want to do something manually that I can automate. Leveraging the Metasploit Framework when automating any task keeps us from having to re-create the wheel as we can use the existing libraries and focus our efforts where it matters.

– Jim O’Gorman | President, Offensive Security

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