module

Zyxel Firewall ZTP Unauthenticated Command Injection

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Disclosed
2022-04-28
Created
2022-05-14

Description

This module exploits CVE-2022-30525, an unauthenticated remote
command injection vulnerability affecting Zyxel firewalls with zero
touch provisioning (ZTP) support. By sending a malicious setWanPortSt
command containing an mtu field with a crafted OS command to the
/ztp/cgi-bin/handler page, an attacker can gain remote command execution
as the nobody user.

Affected Zyxel models are:

* USG FLEX 50, 50W, 100W, 200, 500, 700 using firmware 5.21 and below
* USG20-VPN and USG20W-VPN using firmware 5.21 and below
* ATP 100, 200, 500, 700, 800 using firmware 5.21 and below

Author

jbaines-r7

Platform

Linux,Unix

Architectures

cmd, mips64

References

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/zyxel_ztp_rce
    msf exploit(zyxel_ztp_rce) > show targets
        ...targets...
    msf exploit(zyxel_ztp_rce) > set TARGET < target-id >
    msf exploit(zyxel_ztp_rce) > show options
        ...show and set options...
    msf exploit(zyxel_ztp_rce) > exploit
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