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Unitrends UEB http api remote code execution

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Unitrends UEB http api remote code execution

Disclosed
08/08/2017
Created
03/19/2019

Description

It was discovered that the api/storage web interface in Unitrends Backup (UB) before 10.0.0 has an issue in which one of its input parameters was not validated. A remote attacker could use this flaw to bypass authentication and execute arbitrary commands with root privilege on the target system. UEB v9 runs the api under root privileges and api/storage is vulnerable. UEB v10 runs the api under limited privileges and api/hosts is vulnerable.

Author(s)

  • Cale Smith
  • Benny Husted
  • Jared Arave
  • h00die

Platform

Linux

Architectures

x86

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/linux/http/ueb_api_rce
msf exploit(ueb_api_rce) > show targets
    ...targets...
msf exploit(ueb_api_rce) > set TARGET < target-id >
msf exploit(ueb_api_rce) > show options
    ...show and set options...
msf exploit(ueb_api_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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