Description
This module exploits a backdoor in Webmin versions 1.890 through 1.920. Only the SourceForge downloads were backdoored, but they are listed as official downloads on the project's site.
Unknown attacker(s) inserted Perl qx statements into the build server's source code on two separate occasions: once in April 2018, introducing the backdoor in the 1.890 release, and in July 2018, reintroducing the backdoor in releases 1.900 through 1.920.
Only version 1.890 is exploitable in the default install. Later affected versions require the expired password changing feature to be enabled.
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/webmin/backdoormsf undefined(backdoor) > show actions ...actions...msf undefined(backdoor) > set ACTION < action-name >msf undefined(backdoor) > show options ...show and set options...msf undefined(backdoor) > runPrioritise with Active Threat Intelligence
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