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Rocket Software Unidata udadmin_server Authentication Bypass

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Rocket Software Unidata udadmin_server Authentication Bypass

Disclosed
03/30/2023
Created
04/12/2023

Description

This module exploits an authentication bypass vulnerability in the Linux version of udadmin_server, which is an RPC service that comes with the Rocket Software UniData server. This affects versions of UniData prior to 8.2.4 build 3003. This service typically runs as root. It accepts a username of ":local:" and a password in the form of "::", where username and uid must be a valid account, but gid can be anything except 0. This exploit takes advantage of this login account to authenticate as a chosen user and run an arbitrary command (using the built-in OsCommand message).

Author(s)

  • Ron Bowes

Platform

Linux,Unix

Architectures

x86, x64, 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/linux/misc/unidata_udadmin_auth_bypass
msf exploit(unidata_udadmin_auth_bypass) > show targets
    ...targets...
msf exploit(unidata_udadmin_auth_bypass) > set TARGET < target-id >
msf exploit(unidata_udadmin_auth_bypass) > show options
    ...show and set options...
msf exploit(unidata_udadmin_auth_bypass) > exploit

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